US20090082434A1 - Dihydrobenzofuranyl Alkanamine Derivatives and Methods for Using Same - Google Patents
Dihydrobenzofuranyl Alkanamine Derivatives and Methods for Using Same Download PDFInfo
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- US20090082434A1 US20090082434A1 US12/210,568 US21056808A US2009082434A1 US 20090082434 A1 US20090082434 A1 US 20090082434A1 US 21056808 A US21056808 A US 21056808A US 2009082434 A1 US2009082434 A1 US 2009082434A1
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- QXOBYWRKNIDHJG-UHFFFAOYSA-N Cc1cc(F)ccc1OC Chemical compound Cc1cc(F)ccc1OC QXOBYWRKNIDHJG-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/77—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D307/78—Benzo [b] furans; Hydrogenated benzo [b] furans
- C07D307/79—Benzo [b] furans; Hydrogenated benzo [b] furans with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the hetero ring
- C07D307/81—Radicals substituted by nitrogen atoms not forming part of a nitro radical
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P15/00—Drugs for genital or sexual disorders; Contraceptives
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P15/00—Drugs for genital or sexual disorders; Contraceptives
- A61P15/10—Drugs for genital or sexual disorders; Contraceptives for impotence
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/06—Antimigraine agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/14—Drugs for disorders of the nervous system for treating abnormal movements, e.g. chorea, dyskinesia
- A61P25/16—Anti-Parkinson drugs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/18—Antipsychotics, i.e. neuroleptics; Drugs for mania or schizophrenia
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/20—Hypnotics; Sedatives
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/22—Anxiolytics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/24—Antidepressants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/30—Drugs for disorders of the nervous system for treating abuse or dependence
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/30—Drugs for disorders of the nervous system for treating abuse or dependence
- A61P25/32—Alcohol-abuse
Definitions
- the present invention relates to novel 1-(2,3-dihydro-1-benzofuran-2-yl)alkanamine derivatives that act as agonists and partial agonists of the 5-HT 2C receptor, processes for their preparation, and their use in medicine.
- Schizophrenia affects approximately 5 million people.
- the most prevalent treatments for schizophrenia are currently the ‘atypical’ antipsychotics, which combine dopamine (D 2 ) and serotonin (5-HT 2A ) receptor antagonism.
- D 2 dopamine
- 5-HT 2A serotonin
- these compounds do not appear to adequately treat all the symptoms of schizophrenia and are accompanied by problematic side effects, such as weight gain (Allison, D. B., et. al., Am. J. Psychiatry, 156: 1686-1696, 1999; Masand, P. S., Exp. Opin. Pharmacother. I: 377-389, 2000; Whitaker, R., Spectrum Life Sciences. Decision Resources. 2:1-9, 2000).
- Atypical antipsychotics also bind with high affinity to 5-HT 2C receptors and function as 5-HT 2C receptor antagonists or inverse agonists.
- Weight gain is a problematic side effect associated with atypical antipsychotics such as clozapine and olanzapine, and it has been suggested that 5-HT 2C antagonism is responsible for the increased weight gain.
- stimulation of the 5-HT 2C receptor is known to result in decreased food intake and body weight (Walsh et. al., Psychopharmacology 124: 57-73, 1996; Cowen, P. J., et. al., Human Psychopharmacology 10: 385-391, 1995; Rosenzweig-Lipson, S., et. al., ASPET abstract, 2000).
- 5-HT 2C receptor agonism or partial agonism as a treatment for schizophrenia.
- 5-HT 2C antagonists increase synaptic levels of dopamine and may be effective in animal models of Parkinson's disease (Di Matteo, V., et. al., Neuropharmacology 37: 265-272, 1998; Fox, S. H., et. al., Experimental Neurology 151: 35-49, 1998). Since the positive symptoms of schizophrenia are associated with increased levels of dopamine, compounds with actions opposite to those of 5-HT 2C antagonists, such as 5-HT 2C agonists and partial agonists, should reduce levels of synaptic dopamine.
- 5-HT 2C agonists decrease levels of dopamine in the prefrontal cortex and nucleus accumbens (Millan, M. J., et. al., Neuropharmacology 37: 953-955, 1998; Di Matteo, V., et. al., Neuropharmacology 38: 1195-1205, 1999; Di Giovanni, G., et. al., Synapse 35: 53-61, 2000), brain regions that are thought to mediate critical antipsychotic effects of drugs like clozapine.
- 5-HT 2C agonists do not decrease dopamine levels in the striatum, the brain region most closely associated with extrapyramidal side effects.
- 5-HT 2C agonists decrease firing in the ventral tegmental area (VTA), but not in the substantia nigra.
- VTA ventral tegmental area
- 5-HT 2C agonists have limbic selectivity, and will be less likely to produce extrapyramidal side effects associated with typical antipsychotics.
- the present invention relates to certain dihydrobenzofuranyl alkanamine derivatives and to their use in medicine.
- the invention relates to novel 1-(2,3-dihydro-1-benzofuran-2-yl)alkanamine derivatives that act as agonists or partial agonists of the 5-HT 2C receptor.
- the compounds can be used, for example, to treat schizophrenia and the concomitant mood disorders and cognitive impairments of schizophrenia.
- Compounds of the present invention are preferably less likely to produce the body weight increases associated with current atypical antipsychotics.
- the compounds of the present invention can also be used for the treatment of obesity and its comorbidities.
- the invention relates to compounds of Formula 1:
- R and R′ are, independently, hydrogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, or alkylcycloalkyl of 4 to 12 carbon atoms having 3 to 6 carbons in the cycloalkyl ring;
- R and R′ can be taken together with the nitrogen to which they are attached to form a ring containing 2-5 carbon atoms, wherein one of the ring carbon atoms is optionally replaced by nitrogen, sulfur or oxygen;
- R 1 and R 2 are, independently, hydrogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, or perfluoroalkyl of 1 to 6 carbon atoms;
- R 3a and R 3b are, independently, hydrogen, halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, or perfluoroalkoxy of 1 to 6 carbon atoms;
- R 4 , R 5 , R 6 , and R 7 are, independently, hydrogen, halogen, cyano, hydroxyl, carboxyl, alkyl of 1 to 8 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, perfluoroalkoxy of 1 to 6 carbon atoms, aryl of 5 to 10 carbon atoms, aryloxy of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl having 1 to 3 heteroatoms each independently selected from nitrogen, oxygen or sulfur, alkenyl of 2 to 8 carbon atoms, alkanoyl of 2 to 6 carbon atoms, alkanoyloxy of 2 to 6 carbon atoms, carboalkoxy of 2 to 6 carbon atoms, carboxamido, alkanamido of 2 to 6 carbon atoms, alkanesulfonamido of 1 to 6 carbon atoms, amino, monoalkylamino of 1 to 6 carbon atom
- n 1, 2 or 3;
- R 4 , R 5 , R 6 and R 7 is branched alkyl of 3 to 8 carbon atoms, branched alkenyl of 3 to 8 carbon atoms, or —Y—R 8 , wherein Y is selected from a direct bond, lower alkyl, lower ankenyl, O, and NH and R 8 is aryl of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl, cycloalkyl of 3 to 8 carbon atoms, or 3 to 8 membered heterocycloalkyl; and
- any aryl, heteroaryl, cycloalkyl or heterocycloalkyl may optionally be substituted with 1 to 5 substituents independently selected from halogen, hydroxyl, cyano, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, or perfluoroalkoxy of 1 to 6 carbon atoms.
- the invention relates to methods for treating a patient suffering from schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, substance-induced psychotic disorder, L-DOPA-induced psychosis, psychosis associated with Alzheimer's dementia, psychosis associated with Parkinson's disease, psychosis associated with Lewy body disease, dementia, memory deficit, intellectual deficit associated with Alzheimer's disease, bipolar disorders, depressive disorders, mood episodes, anxiety disorders, adjustment disorders, eating disorders, epilepsy, sleep disorders, migraines, sexual dysfunction, substance abuse, addiction to alcohol and various other drugs, including cocaine and nicotine, gastrointestinal disorders, obesity, or a central nervous system deficiency associated with trauma, stroke, or spinal cord injury that includes administering to the patient a therapeutically effective amount of a compound of formula 1, or a pharmaceutically acceptable salt thereof.
- the invention relates to compositions comprising a compound of Formula 1 or a pharmaceutically acceptable salt thereof, and one or more pharmaceutically acceptable carriers, excipients, or diluents.
- the present invention relates to novel 1-(2,3-dihydro-1-benzofuran-2-yl)alkanamine derivatives that are agonists or partial agonists of the 2c subtype of brain serotonin receptors.
- alkyl refers to an aliphatic hydrocarbon chain having up to 8 carbon atoms, preferably 1 to 6 carbon atoms, and more preferably 1 to 4 carbon atoms.
- alkyl includes, but is not limited to, straight and branched chains such as methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, t-butyl, n-pentyl, isopentyl, neo-pentyl, n-hexyl, and isohexyl.
- the alkyl group is preferably branched having 3 to 8 carbon atoms.
- lower alkyl refers to an alkyl group having 1 to 3 carbon atoms.
- alkenyl refers to an aliphatic straight or branched hydrocarbon chain having 2 to 8 carbon atoms that may contain 1 to 3 double bonds.
- alkenyl groups include vinyl, prop-1-enyl, allyl, methallyl, but-1-enyl, but-2-enyl, but-3-enyl, or 3,3-dimethylbut-1-enyl.
- the alkenyl is preferably a branched alkenyl of 3 to 8 carbon atoms.
- lower alkenyl refers to an alkenyl group having 1 to 3 carbon atoms.
- cycloalkyl refers to a saturated or partially saturated, hydrocarbon ring containing 3 to 8 carbon atoms and more preferably 5 to 7 carbon atoms. Cycloalkyl groups may be monocyclic or bicyclic, and more preferably monocyclic. Bicyclic cycloalkyl groups are preferably bridged. “Bridged” refers to a cycloalkyl group that contains at least one carbon-carbon bond between two non-adjacent carbon atoms of the cycloalkyl ring. “Partially saturated” refers to a nonaromatic cycloalkyl group containing at least one double bond and preferably one double bond. Preferably, the cycloalkyl group is saturated.
- alkylcycloalkyl refers to the group —R-cycloalkyl, where cycloalkyl is as defined above and R is an alkyl moiety having 1 to 6, preferably 1 to 4, and more preferably 1 to 3 carbon atoms.
- heterocycloalkyl refers to a 3 to 8 membered, and more preferably 5 to 7 membered cycloalkyl group in which one to three carbon atoms of the cycloalkyl group are replaced with a heteroatom independently selected from oxygen, nitrogen, or sulfur.
- the heterocycloalkyl group may be saturated or partially saturated, and may be monocyclic or bicyclic (such as bridged). Preferably, the heterocycloalkyl is monocyclic.
- the heterocycloalkyl group may be unsubstituted or substituted as described hereinafter.
- aryl refers to a 5 to 10 membered carbocyclic aromatic ring.
- the aryl may be monocyclic or bicyclic, and may be substituted or unsubstituted.
- Monocyclic aryl groups preferably have 5, 6, or 7 members and bicyclic aryl groups preferably have 8, 9 or 10 members.
- Exemplary aryl groups include phenyl and naphthyl.
- aryloxy refers to the group Ar—O—, where Ar is an aryl group of 5 to 10 carbon atoms as previously described.
- heteroaryl refers to a 5 to 10 membered monocyclic or bicyclic carbon containing aromatic ring having 1 to 3 of its ring members independently selected from nitrogen, sulfur or oxygen.
- Monocyclic rings preferably have 5 to 6 members and bicyclic rings preferably have 8 to 10 membered ring structures.
- the heteroaryl group may be unsubstituted or substituted as described hereinafter.
- heteroaryls include, but are not limited to, thienyl, furyl, pyrrolyl, imidazolyl, pyrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, indolyl, indazolyl, benzofuranyl, isobenzofuranyl, benzothienyl, isobenzothienyl, quinolyl, isoquinolyl, quinoxalinyl, or quinazolinyl.
- perfluoroalkyl refers to a straight or branched aliphatic hydrocarbon chain of 1 to 6 carbon atoms and preferably 1 to 3 carbon atoms, in which all hydrogens are replaced with fluorine.
- alkanamido refers to the group R—C( ⁇ O)—NH— where R is an alkyl group of 1 to 5 carbon atoms.
- alkanoyl refers to the group R—C( ⁇ O)— where R is an alkyl group of 1 to 5 carbon atoms.
- alkanoyloxy refers to the group R—C( ⁇ O)—O— where R is an alkyl group of 1 to 5 carbon atoms.
- alkanesulfonamido refers to the group R—S(O) 2 —NH— where R is an alkyl group of 1 to 6 carbon atoms.
- alkoxy refers to the group R—O— where R is an alkyl group of 1 to 6 carbon atoms.
- perfluoroalkoxy refers to the group R—O where R is a perfluoroalkyl group of 1 to 6 carbon atoms.
- carboxylate refers to the group NH 2 —C( ⁇ O)—.
- carboalkoxy refers to the group R—O—C( ⁇ O)— where R is an alkyl group of 1 to 5 carbon atoms.
- halogen or “halo,” as used herein, refer to chlorine, bromine, fluorine or iodine.
- substituted refers to a moiety, such as an aryl, heteroaryl, cycloalkyl or heterocycloalkyl moiety having from 1 to about 5 substituents, and more preferably from 1 to about 3 substituents independently selected from a halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, or perfluoroalkoxy of 1 to 6 carbon atoms.
- Preferred substituents are a halogen atom, a lower alkyl, a perfluoroalkyl of 1 to 3 carbon atoms, an alkoxy group of 1 to 3 carbon atoms or a perfluoroalkoxy of 1 to 3 carbon atoms.
- ⁇ ективное amount refers to the amount of a compound of Formula 1 that, when administered to a patient, is effective to at least partially treat a condition from which the patient is suffering from.
- Such conditions include, but are not limited to, schizophrenia, schizoaffective disorder, schizophreniform disorder, L-DOPA-induced psychosis, bipolar disorder, obesity, obsessive compulsive disorder, depression, panic disorder, sleep disorders, eating disorders, and epilepsy.
- pharmaceutically acceptable salts refers to salts derived from treating a compound of Formula 1 with an organic or inorganic acid such as, for example, acetic, lactic, citric, cinnamic, tartaric, succinic, fumaric, maleic, malonic, mandelic, malic, oxalic, propionic, hydrochloric, hydrobromic, phosphoric, nitric, sulfuric, glycolic, pyruvic, methanesulfonic, ethanesulfonic, toluenesulfonic, salicylic, benzoic, or similarly known acceptable acids.
- an organic or inorganic acid such as, for example, acetic, lactic, citric, cinnamic, tartaric, succinic, fumaric, maleic, malonic, mandelic, malic, oxalic, propionic, hydrochloric, hydrobromic, phosphoric, nitric, sulfuric, glycolic, pyruvic, methan
- patient refers to a mammal.
- administer refers to either directly administering a compound or composition to a patient, or administering a prodrug derivative or analog of the compound to the patient, which will form an equivalent amount of the active compound or substance within the patient's body.
- treat refers to partially or completely alleviating, inhibiting, preventing, ameliorating and/or relieving the condition.
- uffer or “suffering” as used herein refers to one or more conditions that a patient has been diagnosed with, or is suspected to have.
- the invention relates to compounds of Formula 1:
- R and R′ are, independently, hydrogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, or alkylcycloalkyl of 4 to 12 carbon atoms having 3 to 6 carbons in the cycloalkyl ring;
- R and R′ can be taken together with the nitrogen to which they are attached to form a ring containing 2-5 carbon atoms, wherein one of the ring carbon atoms is optionally replaced by nitrogen, sulfur or oxygen;
- R 1 and R 2 are each, independently, hydrogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, or perfluoroalkyl of 1 to 6 carbon atoms;
- R 3a and R 3b are, independently, hydrogen, halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, or perfluoroalkoxy of 1 to 6 carbon atoms;
- R 4 , R 5 , R 6 , and R 7 are, independently, hydrogen, halogen, cyano, hydroxyl, carboxyl, alkyl of 1 to 8 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, perfluoroalkoxy of 1 to 6 carbon atoms, aryl of 5 to 10 carbon atoms, aryloxy of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl having 1 to 3 heteroatoms each independently selected from nitrogen, oxygen or sulfur, alkenyl of 2 to 8 carbon atoms, alkanoyl of 2 to 6 carbon atoms, alkanoyloxy of 2 to 6 carbon atoms, carboalkoxy of 2 to 6 carbon atoms, carboxamido, alkanamido of 2 to 6 carbon atoms, alkanesulfonamido of 1 to 6 carbon atoms, amino, monoalkylamino of 1 to 6 carbon atom
- n 1, 2 or 3;
- R 4 , R 5 , R 6 and R 7 is branched alkyl of 3 to 8 carbon atoms, branched alkenyl of 3 to 8 carbon atoms, or —Y—R 8 , wherein Y is selected from a direct bond, lower alkyl, lower ankenyl, O, and NH and R 8 is aryl of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl, cycloalkyl of 3 to 8 carbon atoms, or 3 to 8 membered heterocycloalkyl; and
- any aryl, heteroaryl, cycloalkyl or heterocycloalkyl may optionally be substituted with 1 to 5 substituents independently selected from halogen, hydroxyl, cyano, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, or perfluoroalkoxy of 1 to 6 carbon atoms.
- R and R′ are, independently, hydrogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, or alkylcycloalkyl of 4 to 12 carbon atoms having 3 to 6 carbons in the cycloalkyl ring.
- R and R′ can be taken together with the nitrogen to which they are attached to form a ring containing 2-5 carbon atoms, wherein one of the ring carbon atoms is optionally replaced by nitrogen, sulfur or oxygen.
- R, R′, R 1 , and R 2 are each, independently, hydrogen or alkyl of 1 to 6 carbon atoms.
- R′ is hydrogen
- R, R 1 , and R 2 are each independently hydrogen or alkyl of 1 to 6 carbon atoms.
- each of R, R′, R 1 , and R 2 is hydrogen.
- R 3a and R 3b may each be selected, independently, from hydrogen, halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, and perfluoroalkoxy of 1 to 6 carbon atoms.
- R 3a and R 3b are each independently hydrogen or alkyl of 1 to 3 carbon atoms and more preferably hydrogen.
- R 4 , R 5 , R 6 , and R 7 may each be selected, independently, from hydrogen, halogen, cyano, hydroxyl, carboxyl, alkyl of 1 to 8 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, perfluoroalkoxy of 1 to 6 carbon atoms, aryl of 5 to 10 carbon atoms, aryloxy of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl having 1 to 3 heteroatoms each independently selected from nitrogen, oxygen or sulfur, alkenyl of 2 to 8 carbon atoms, alkanoyl of 2 to 6 carbon atoms, alkanoyloxy of 2 to 6 carbon atoms, carboalkoxy of 2 to 6 carbon atoms, carboxamido, alkanamido of 2 to 6 carbon atoms, alkanesulfonamido of 1 to 6 carbon atoms, amino, monoalkylamino of 1 to
- R 4 , R 5 , R 6 and R 7 is —Y—R 8 , wherein Y is selected from a direct bond, lower alkyl, lower ankenyl, O, and NH, and R 8 is an aryl of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl, cycloalkyl of 3 to 8 carbon atoms, 3 to 8 membered heterocycloalkyl, branched alkyl of 3 to 8 carbon atoms, or branched alkenyl of 3 to 8 carbon atoms.
- R 4 , R 5 , R 6 , and R 7 may optionally be substituted with 1 to 5 substituents independently selected from halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, and perfluoroalkoxy of 1 to 6 carbon atoms.
- Y is a direct bond
- R 4 , R 5 , R 6 , and R 7 are preferably selected from hydrogen, halogen, alkyl of 1 to 8 carbon atoms, perfluoroalkyl of 1 to 3 carbon atoms, alkoxy of 1 to 3 carbon atoms, alkenyl of 2 to 8 carbon atoms, cycloalkyl of 3 to 8 carbon atoms, 3 to 8 membered heterocycloalkyl, aryl of 5 to 10 carbon atoms, or 5 to 10 membered heteroaryl, provided that at least one of R 4 , R 5 , R 6 and R 7 is an aryl of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl, cycloalkyl of 3 to 8 carbon atoms, 3 to 8 membered heterocycloalkyl, branched alkyl of 3 to 8 carbon atoms, or branched alkenyl of 3 to 8 carbon atoms, wherein any aryl, heteroaryl, cycloalkyl
- At least one of R 4 , R 5 , R 6 and R 7 and more preferably at least one of R 4 , R 5 and R 7 is an aryl of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl, cycloalkyl of 3 to 8 carbon atoms, or 3 to 8 membered heterocycloalkyl.
- R 4 , R 5 , and R 6 are, independently, hydrogen, halogen, alkyl of 1 to 3 carbon atoms, alkoxy of 1 to 3 carbon atoms, perfluoroalkyl of 1 to 3 carbon atoms, or perfluoroalkoxy of 1 to 3 carbon atoms
- R 7 is a branched alkyl of 3 to 8 carbon atoms, branched alkenyl of 3 to 8 carbon atoms, cycloalkyl of 3 to 8 carbon atoms, 3 to 8 membered heterocycloalkyl, aryl of 5 to 10 carbon atoms, or 5 to 10 membered heteroaryl, wherein any aryl, heteroaryl, cycloalkyl or heterocycloalkyl may optionally be substituted with 1 to 5 substituents independently selected from halogen, hydroxyl, cyano, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms,
- R 7 is a branched alkyl of 3 to 6 carbon atoms, branched alkenyl of 3 to 6 carbon atoms, cycloalkyl of 3 to 8 carbon atoms, aryl of 5 to 10 carbon atoms, or 5 to 10 membered heteroaryl, each of which may optionally be substituted with 1 to 5 substituents independently selected from halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, and perfluoroalkoxy of 1 to 6 carbon atoms.
- each of R 4 , R 5 and R 7 is, independently, aryl of 5 to 10 carbon atoms, cycloalkyl of 5 to 7 carbon atoms, or 5 to 10 membered heteroaryl, and more preferably is phenyl or napthyl, or a 5 to 10 membered heteroaryl selected from thienyl, furyl, pyrrolyl, imidazolyl, pyrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, indolyl, indazolyl, benzofuranyl, isobenzofuranyl, benzothienyl, isobenzothienyl, quinolyl, isoquinolyl, quinoxalinyl, or quinazolinyl, each of which may optionally be substituted with 1
- R 7 is aryl of 5 to 10 carbon atoms, cycloalkyl of 5 to 7 carbon atoms, branched alkyl of 3 to 6 carbon atoms, branched alkenyl of 3 to 6 carbon atoms, or 5 to 10 membered heteroaryl, and more preferably is phenyl or napthyl, or a 5 to 10 membered heteroaryl selected from thienyl, furyl, pyrrolyl, imidazolyl, pyrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, indolyl, indazolyl, benzofuranyl, isobenzofuranyl, benzothienyl, isobenzothienyl, quinolyl, isoquinolyl, quinoxalinyl,
- R 7 is aryl of 5 to 10 carbon atoms, cycloalkyl of 5 to 7 carbon atoms, or 5 to 10 membered heteroaryl, or more preferably phenyl, wherein said aryl (including phenyl), cycloalkyl or heteroaryl may optionally be substituted with 1 to 5 substituents independently selected from halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, and perfluoroalkoxy of 1 to 6 carbon atoms.
- At least one of R 4 and R 5 is halogen, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 3 carbon atoms, or alkoxy of 1 to 6 carbon atoms. Even more preferred compounds are those in which at least one of R 4 and R 5 is halogen, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 3 carbon atoms, or alkoxy of 1 to 6 carbon atoms, and R, R′, R 1 , and R 2 are each, independently, hydrogen or alkyl of 1 to 6 carbon atoms.
- R 7 is aryl of 5 to 10 carbon atoms, optionally substituted with 1 to 3 substituents independently selected from a halogen atom, a lower alkyl, a perfluoroalkyl of 1 to 3 carbon atoms, an alkoxy group of 1 to 3 carbon atoms or a perfluoroalkoxy of 1 to 3 carbon atoms.
- R 7 is selected from the group consisting of:
- n is 1, 2 or 3, preferably 1 or 2, and more preferably 1.
- the compounds of Formula 1 are:
- the compounds of Formula 1 are:
- the compounds of Formula 1 have affinity for and agonist or partial agonist activity at the 2c subtype of brain serotonin receptors and are thus of interest for the treatment of mental disorders, including psychotic disorders such as schizophrenia including paranoid type, disorganized type, catatonic type, and undifferentiated type, schizophreniform disorder, schizoaffective disorder, delusional disorder, substance-induced psychotic disorder, and psychotic disorder not otherwise specified; L-DOPA-induced psychosis; psychosis associated with Alzheimer's dementia; psychosis associated with Parkinson's disease; psychosis associated with Lewy body disease; bipolar disorders such as bipolar I disorder, bipolar II disorder, and cyclothymic disorder; depressive disorders such as major depressive disorder, dysthymic disorder, substance-induced mood disorder, and depressive disorder not otherwise specified; mood episodes such as major depressive episode, manic episode, mixed episode, and hypomanic episode; anxiety disorders such as panic attack, agoraphobia, panic disorder, specific phobia, social phobia, obsessive comp
- mood disorders such as depressive disorders or bipolar disorders often accompany psychotic disorders such as schizophrenia.
- psychotic disorders such as schizophrenia.
- a more complete description of the aforementioned mental disorders can be found in the Diagnostic and Statistical Manual of Mental Disorders, 4th edition, Washington, D.C., American Psychiatric Association (1994), incorporated herein by reference in its entirety.
- the compounds of formula 1 are also of interest for the treatment of epilepsy; migraines; sexual dysfunction; sleep disorders; substance abuse, including addiction to alcohol and various drugs, including cocaine and nicotine; gastrointestinal disorders, such as malfunction of gastrointestinal motility; and obesity, with its consequent comorbidities including Type II diabetes, cardiovascular disease, hypertension, hyperlipidemia, stroke, osteoarthritis, sleep apnea, gall bladder disease, gout, some cancers, some infertility, and early mortality.
- the compounds of Formula 1 can also be used to treat central nervous system deficiencies associated, for example, with trauma, stroke, and spinal cord injuries.
- the compounds of Formula 1 can therefore be used to improve or inhibit further degradation of central nervous system activity during or following the malady or trauma in question. Included in these improvements are maintenance or improvement in motor and motility skills, control, coordination and strength.
- the present invention therefore provides methods of treating, each of the conditions listed above in a patient, preferably in a human, the methods including administering a therapeutically effective amount of at least one compound of Formula 1 or a pharmaceutically acceptable salt thereof to a patient suffering from such a condition.
- the invention relates to compositions comprising at least one compound of Formula 1, or a pharmaceutically acceptable salt thereof, and one or more pharmaceutically acceptable carriers, excipients, or diluents.
- Such compositions include pharmaceutical compositions for treating or controlling disease states or conditions of the central nervous system.
- the compositions comprise mixtures of one or more compounds of Formula 1.
- Certain of the compounds of Formula 1 contain stereogenic carbon atoms or other chiral elements (i.e. chirality axis) and thus give rise to stereoisomers, including enantiomers, diastereomers, and in the case of biphenyls, the formation of atropisomers.
- stereogenic carbon atoms or other chiral elements i.e. chirality axis
- stereoisomers including enantiomers, diastereomers, and in the case of biphenyls, the formation of atropisomers.
- Formula 1 includes all of the stereoisomers of the 1-(2,3-dihydro-1-benzofuran-2-yl)alkanamine derivatives, as well as mixtures of the stereoisomers.
- the name of the product where the absolute configuration of an asymmetric center is not indicated, is intended to embrace the individual stereoisomers as well as mixtures of stereoisomers.
- the sign of the optical rotation [(+), ( ⁇ ) and ( ⁇ )] is utilized.
- R* and S* are used to indicate relative stereochemistry, employing the Chemical Abstracts convention which automatically assigns R* to the lowest numbered asymmetric center.
- a stereoisomer substantially free of the corresponding stereoisomer refers to a compound that is isolated or separated via separation techniques or prepared free of the corresponding stereoisomer. “Substantially free,” as used herein, means that the compound is made up of a significantly greater proportion of one stereoisomer. In preferred embodiments, the compound is made up of at least about 90% by weight of a preferred stereoisomer. In other embodiments of the invention, the compound is made up of at least about 99% by weight of a preferred stereoisomer.
- Preferred stereoisomers can be isolated from racemic mixtures by any method known to those skilled in the art, including high performance liquid chromatography (HPLC) and the formation and crystallization of chiral salts, or preferred stereoisomers can be prepared by methods described herein. Methods for the preparation of preferred stereoisomers are described, for example, in Jacques, et al., Enantiomers. Racemates and Resolutions (Wiley Interscience, New York, 1981); Wilen, S. H., et al., Tetrahedron 33:2725 (1977); Eliel, E. L. Stereochemistry of Carbon Compounds (McGraw-Hill, NY, 1962); and Wilen, S. H. Tables of Resolving Agents and Optical Resolutions p. 268 (E. L. Eliel, Ed., Univ. of Notre Dame Press, Notre Dame, Ind. 1972), each of which is hereby incorporated by reference in its entirety.
- HPLC high performance liquid chromatography
- This invention also provides processes for preparing compounds of formula I which processes include one of the following:
- R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , and R 7 are as defined herein, with sodium azide and reducing the product to give a compound of formula 1 wherein n is 1 and R and R′ are both H; or b) reacting a compound of formula 7 as defined above with an amine of formula NHRR′ where R and R′ are as defined herein to give a corresponding compound of formula 1 wherein n is 1; or c) reacting a compound of formula 7 as defined above with sodium cyanide followed by reduction to give a compound of formula 1 wherein n is 2 and R and R′ are both H; d) converting a compound of formula 1 as defined herein to a pharmaceutically acceptable salt or vice versa; or e) isolating a specific enantiomer or diastereomer of a compound of formula 1 or a pharmaceutically acceptable salt thereof as defined herein from a mixture thereof.
- the 1-(2,3-dihydro-1-benzofuran-2-yl)alkanamine derivatives of Formula 1 may be prepared as illustrated in Scheme I.
- the appropriately substituted phenol (2) is alkylated with an appropriately substituted allyl bromide or alcohol (3) in the presence of a suitable base such as potassium carbonate in a solvent such as N,N-dimethylformamide.
- a suitable base such as potassium carbonate
- a solvent such as N,N-dimethylformamide.
- the phenols, allyl bromides, and allyl alcohols appropriate for the synthesis of the compounds of formula I are either commercially available or can readily be prepared by one skilled in the art.
- the resulting allyl ether (4) is treated in refluxing mesitylene or other suitable high boiling solvent to afford the desired Claisen rearrangement product.
- the 2-allyl phenol (5) intermediate is subjected to epoxidation of the double bond with 3-chloroperoxybenzoic acid in dichloromethane.
- the resulting epoxy phenol intermediate is treated with a suitable base such as potassium carbonate in a solvent such as methanol to induce cyclization to give the 2,3-dihydro-1-benzofuran-2-yl)methanol (6).
- Conversion of (7) to the amine (1) can be accomplished, for example, by treatment with sodium azide in a solvent such as dimethylsulfoxide followed by reduction of the azide or direct treatment with an appropriately substituted amine to provide the compounds of Formula 1.
- longer alkyl chains i.e. 2-aminoethyl
- a 2-halogenated methoxy benzene or a suitably protected 2-halogenated phenol (2a) permits the introduction of the aromatic substitutent through a palladium-catalyzed cross coupling reaction (i.e. Suzuki reaction) with the desired boronic acid.
- a catalyst such as dichlorobis(tri-o-tolylphosphine)-palladium(II) in the presence of a suitable base such as potassium carbonate in a solvent such as dioxane provides the biaryl system.
- a suitable base such as potassium carbonate
- a solvent such as dioxane
- the phenols (2) may be prepared by a reversal of the inherent reactivity associated with the partners in the cross-coupling reaction as shown in Scheme Ib.
- Installation of the biaryl system may also be accomplished via a palladium-catalyzed cross coupling reaction (i.e. Suzuki reaction) of appropriate derivatives of 2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (7) with the desired boronic acid (Scheme Ic).
- a catalyst such as dichlorobis(tri-o-tolylphosphine)-palladium(II) in the presence of a suitable base such as potassium carbonate in a solvent such as dioxane provides the biaryl system.
- biaryl system installation of the biaryl system may be accomplished via a palladium-catalyzed cross coupling reaction (i.e. Suzuki reaction) of appropriate 1-(2,3-dihydro-1-benzofuran-2-yl) derivatives (1a) in either racemic or stereochemically pure form following separation of the enantiomers.
- a palladium-catalyzed cross coupling reaction i.e. Suzuki reaction
- 1a catalyst such as dichlorobis(tri-o-tolylphosphine)-palladium(II)
- a suitable base such as potassium carbonate
- the compounds of Formula 1 can also be prepared in a stereoselective manner as illustrated in Scheme II.
- One such method involves deprotection of the benzyl ether with catalytic palladium on carbon under a hydrogen atmosphere (45 psi) in a solvent, such as methanol, to provide triol (10).
- a solvent such as methanol
- Formation to the previously described 2,3-dihydro-1-benzofuran-2-yl)methanol (6) can be accomplished by treatment of (9) with hydrogen bromide in acetic acid to provide the intermediate vicinal acetoxy bromide followed by cyclization with a suitable base such as potassium carbonate in a solvent such as methanol.
- the compounds of Formula 1 can be prepared via selective mono-protection of diol (9) with a suitable protecting group as illustrated in Scheme III.
- diol (9) can be converted to the mono-tosylated derivative (12a) by treatment with p-toluenesulfonyl chloride and a suitable base such as pyridine to give the desired product, as illustrated in Scheme IV.
- the Sharpless Asymmetric Epoxidation (A-E) reaction is a general method for the stereoselective epoxidation of allylic alcohols and treatment of (16) under the appropriate conditions provides epoxy alcohol (17) with a high degree of stereoselectivity.
- the alcohol present in (17) can then be tosylated with p-toluenesulfonyl chloride as previously described to give derivative (18).
- Deprotection of the benzyl ether with concomitant regioselective opening of the epoxide maintaining the stereochemical information introduced by the Sharpless A-E is accomplished under the appropriate conditions by treatment of (18) with palladium on carbon under a hydrogen atmosphere in a solvent such as ethanol. Cyclodehydration using Mitsunobu conditions as previously described then affords 2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (7).
- the invention relates to compositions comprising at least one compound of Formula 1, or a pharmaceutically acceptable salt thereof, and one or more pharmaceutically acceptable carriers, excipients, or diluents.
- Such compositions are prepared in accordance with acceptable pharmaceutical procedures, such as, for example, those described in Remingtons Pharmaceutical Sciences, 17th edition, ed. Alfonoso R. Gennaro, Mack Publishing Company, Easton, Pa. (1985), which is incorporated herein by reference in its entirety.
- Pharmaceutically acceptable carriers are those carriers that are compatible with the other ingredients in the formulation and are biologically acceptable.
- the compounds of Formula 1 can be administered orally or parenterally, neat, or in combination with conventional pharmaceutical carriers.
- Applicable solid carriers can include one or more substances that can also act as flavoring agents, lubricants, solubilizers, suspending agents, fillers, glidants, compression aids, binders, tablet-disintegrating agents, or encapsulating materials.
- the carrier is a finely divided solid that is in admixture with the finely divided active ingredient.
- the active ingredient is mixed with a carrier having the necessary compression properties in suitable proportions and compacted in the shape and size desired.
- the powders and tablets preferably contain up to 99% of the active ingredient.
- Suitable solid carriers include, for example, calcium phosphate, magnesium stearate, talc, sugars, lactose, dextrin, starch, gelatin, cellulose, methyl cellulose, sodium carboxymethyl cellulose, polyvinylpyrrolidine, low melting waxes and ion exchange resins.
- Liquid carriers can be used in preparing solutions, suspensions, emulsions, syrups and elixirs.
- the active ingredient can be dissolved or suspended in a pharmaceutically acceptable liquid carrier such as water, an organic solvent, a mixture of both, or a pharmaceutically acceptable oil or fat.
- the liquid carrier can contain other suitable pharmaceutical additives such as, for example, solubilizers, emulsifiers, buffers, preservatives, sweeteners, flavoring agents, suspending agents, thickening agents, colors, viscosity regulators, stabilizers or osmo-regulators.
- suitable examples of liquid carriers for oral and parenteral administration include water (particularly containing additives as above, e.g.
- cellulose derivatives preferably sodium carboxymethyl cellulose solution
- alcohols including monohydric alcohols and polyhydric alcohols e.g. glycols
- oils e.g. fractionated coconut oil and arachis oil
- the carrier can also be an oily ester such as ethyl oleate and isopropyl myristate.
- Sterile liquid carriers are used in sterile liquid form compositions for parenteral administration.
- the liquid carrier for pressurized compositions can be halogenated hydrocarbon or other pharmaceutically acceptable propellant.
- Liquid pharmaceutical compositions that are sterile solutions or suspensions can be administered by, for example, intramuscular, intraperitoneal or subcutaneous injection. Sterile solutions can also be administered intravenously.
- Compositions for oral administration can be in either liquid or solid form.
- the compounds of Formula 1 can be administered rectally or vaginally in the form of a conventional suppository.
- the compounds of Formula 1 can be formulated into an aqueous or partially aqueous solution, which can then be utilized in the form of an aerosol.
- the compounds of Formula 1 can also be administered transdermally through the use of a transdermal patch containing the active compound and a carrier that is inert to the active compound, is non-toxic to the skin, and allows delivery of the agent for systemic absorption into the blood stream via the skin.
- the carrier can take any number of forms such as creams and ointments, pastes, gels, and occlusive devices.
- the creams and ointments can be viscous liquid or semisolid emulsions of either the oil-in-water or water-in-oil type.
- Pastes comprised of absorptive powders dispersed in petroleum or hydrophilic petroleum containing the active ingredient can also be suitable.
- a variety of occlusive devices can be used to release the active ingredient into the blood stream such as a semipermeable membrane covering a reservoir containing the active ingredient with or without a carrier, or a matrix containing the active ingredient. Other occlusive devices are known in the literature.
- the pharmaceutical composition is in unit dosage form, e.g. as tablets, capsules, powders, solutions, suspensions, emulsions, granules, or suppositories.
- the composition is sub-divided in unit dose containing appropriate quantities of the active ingredient;
- the unit dosage forms can be packaged compositions, for example, packeted powders, vials, ampoules, prefilled syringes or sachets containing liquids.
- the unit dosage form can be, for example, a capsule or tablet itself, or it can be the appropriate number of any such compositions in package form.
- the amount of compound of formula 1 provided to a patient will vary depending upon what is being administered, the purpose of the administration, such as prophylaxis or therapy, the state of the patient, the manner of administration, and the like.
- compounds of formula 1 are provided to a patient suffering from a condition in an amount sufficient to treat or at least partially treat the symptoms of the condition and its complications.
- An amount adequate to accomplish this is a “therapeutically effective amount” as described previously herein.
- the dosage to be used in the treatment of a specific case must be subjectively determined by the attending physician.
- the variables involved include the specific condition and the size, age, and response pattern of the patient.
- the treatment of substance abuse follows the same method of subjective drug administration under the guidance of the attending physician.
- a starting dose is about 5 mg per day with gradual increase in the daily dose to about 150 mg per day, to provide the desired dosage level in the patient.
- the present invention is directed to prodrugs of compounds of Formula 1.
- prodrug means a compound that is convertible in vivo by metabolic means (e.g. by hydrolysis) to a compound of Formula 1.
- Various forms of prodrugs are known in the art such as those discussed in, for example, Bundgaard, (ed.), Design of Prodrugs, Elsevier (1985); Widder, et al. (ed.), Methods in Enzymology, vol. 4, Academic Press (1985); Krogsgaard-Larsen, et al., (ed).
- the oil was diluted with methanol (100 mL) and added to a solution of potassium carbonate (16.5 g, 0.119 mol) and methanol (825 mL) and the solution was allowed to stir at room temperature 2 h.
- the solvent was removed in vacuo.
- the residue was washed with water (1000 mL) and ethyl acetate (500 mL).
- the aqueous layer was acidified with 1 N aqueous hydrogen chloride and washed with ethyl acetate (500 mL).
- the combined organics were washed with water (500 mL), saturated aqueous sodium chloride (500 mL), dried (magnesium sulfate) and the solvent removed in vacuo to provide a crude solid.
- reaction mixture was quenched by the addition of water (75 mL), diluted with diethyl ether (600 mL), washed with aqueous hydrogen chloride (1.0 M, 750 mL), water (200 mL), saturated aqueous sodium chloride (200 mL), dried (magnesium sulfate) and the solvent removed in vacuo to give a crude oil.
- reaction mixture was quenched by the addition of sodium sulfite.
- the reaction mixture was diluted with water (500 mL) and ethyl acetate (500 mL).
- the aqueous phase was separated and extracted with ethyl acetate (2 ⁇ 200 mL).
- the combined organic extracts were washed with saturated aqueous sodium chloride (400 mL), dried (magnesium sulfate) and the solvent was removed in vacuo to give a crude oil.
- R f 0.51 (silica, ethyl acetate:hexanes 2:8); Anal. calcd. for C 22 H 27 NO 4 : C, 71.52; H, 7.37; N, 3.79. Found C, 71.2; H, 7.44; N, 3.77.
- R f 0.48 (silica, ethyl acetate:hexanes 1:4); mp 100-102° C.; Anal. calcd. for C 24 H 20 F 3 NO 3 : C, 67.44; H, 4.72; N, 3.28. Found: C, 67.37; H, 4.69; N, 3.15.
- R f 0.54 (silica, ethyl acetate:hexanes 1:4); Anal. calcd. for C 22 H 19 FO 4 S.0.2C 4 H 8 O 2 : C, 65.82; H, 4.99. Found: C, 65.77; H, 4.99.
- (+)-benzyl ⁇ [7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl ⁇ carbamate
- (+)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with 4-chlorophenylboronic acid (0.306 g, 1.96 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.051 g, 0.065 mmol), and potassium carbonate (0.45 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 provided 0.367 g (68%) of ( ⁇ )-[7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as an orange solid. mp 130-133° C.; Anal. calcd. for C 22 H 19 ClO 4 S: C, 63.69; H, 4.62. Found: C, 62.82; H, 4.56.
- (+)-benzyl ⁇ [7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl ⁇ carbamate
- the reaction mixture was washed with a 1:1 solution of 10% sodium sulfite:saturated sodium bicarbonate (2 ⁇ 300 mL). The solvent was removed in vacuo to give crude yellow oil.
- the oil was diluted with methanol (300 mL) and added to a solution of potassium carbonate (15.0 g, 108.5 mmol) the solution was allowed to stir at room temperature 2 h. The solvent was removed in vacuo.
- the residue was washed with water (1000 mL) and ethyl acetate (500 mL).
- the aqueous layer was acidified with 1 N aqueous hydrogen chloride and washed with ethyl acetate (500 mL).
- (+)-benzyl ⁇ [7-(4-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl ⁇ carbamate
Abstract
Compounds of Formula 1 or pharmaceutically acceptable salts thereof are provided:
which are agonists or partial agonists of the 2C subtype of brain serotonin receptors. The compounds, and compositions containing the compounds, can be used to treat a variety of central nervous system disorders such as schizophrenia.
Description
- The present invention claims priority benefit of U.S. Provisional Application Ser. No. 60/514,454, filed Oct. 24, 2003, which is incorporated herein by reference in its entirety for all purposes.
- The present invention relates to novel 1-(2,3-dihydro-1-benzofuran-2-yl)alkanamine derivatives that act as agonists and partial agonists of the 5-HT2C receptor, processes for their preparation, and their use in medicine.
- Schizophrenia affects approximately 5 million people. The most prevalent treatments for schizophrenia are currently the ‘atypical’ antipsychotics, which combine dopamine (D2) and serotonin (5-HT2A) receptor antagonism. Despite the reported improvements in efficacy and side-effect liability of atypical antipsychotics relative to typical antipsychotics, these compounds do not appear to adequately treat all the symptoms of schizophrenia and are accompanied by problematic side effects, such as weight gain (Allison, D. B., et. al., Am. J. Psychiatry, 156: 1686-1696, 1999; Masand, P. S., Exp. Opin. Pharmacother. I: 377-389, 2000; Whitaker, R., Spectrum Life Sciences. Decision Resources. 2:1-9, 2000).
- Atypical antipsychotics also bind with high affinity to 5-HT2C receptors and function as 5-HT2C receptor antagonists or inverse agonists. Weight gain is a problematic side effect associated with atypical antipsychotics such as clozapine and olanzapine, and it has been suggested that 5-HT2C antagonism is responsible for the increased weight gain. Conversely, stimulation of the 5-HT2C receptor is known to result in decreased food intake and body weight (Walsh et. al., Psychopharmacology 124: 57-73, 1996; Cowen, P. J., et. al., Human Psychopharmacology 10: 385-391, 1995; Rosenzweig-Lipson, S., et. al., ASPET abstract, 2000).
- Several lines of evidence support a role for 5-HT2C receptor agonism or partial agonism as a treatment for schizophrenia. Studies suggest that 5-HT2C antagonists increase synaptic levels of dopamine and may be effective in animal models of Parkinson's disease (Di Matteo, V., et. al., Neuropharmacology 37: 265-272, 1998; Fox, S. H., et. al., Experimental Neurology 151: 35-49, 1998). Since the positive symptoms of schizophrenia are associated with increased levels of dopamine, compounds with actions opposite to those of 5-HT2C antagonists, such as 5-HT2C agonists and partial agonists, should reduce levels of synaptic dopamine. Recent studies have demonstrated that 5-HT2C agonists decrease levels of dopamine in the prefrontal cortex and nucleus accumbens (Millan, M. J., et. al., Neuropharmacology 37: 953-955, 1998; Di Matteo, V., et. al., Neuropharmacology 38: 1195-1205, 1999; Di Giovanni, G., et. al., Synapse 35: 53-61, 2000), brain regions that are thought to mediate critical antipsychotic effects of drugs like clozapine. However, 5-HT2C agonists do not decrease dopamine levels in the striatum, the brain region most closely associated with extrapyramidal side effects. In addition, a recent study demonstrates that 5-HT2C agonists decrease firing in the ventral tegmental area (VTA), but not in the substantia nigra. The differential effects of 5-HT2C agonists in the mesolimbic pathway relative to the nigrostriatal pathway suggest that 5-HT2C agonists have limbic selectivity, and will be less likely to produce extrapyramidal side effects associated with typical antipsychotics.
- The present invention relates to certain dihydrobenzofuranyl alkanamine derivatives and to their use in medicine. In one aspect, the invention relates to novel 1-(2,3-dihydro-1-benzofuran-2-yl)alkanamine derivatives that act as agonists or partial agonists of the 5-HT2C receptor. The compounds can be used, for example, to treat schizophrenia and the concomitant mood disorders and cognitive impairments of schizophrenia. Compounds of the present invention are preferably less likely to produce the body weight increases associated with current atypical antipsychotics. The compounds of the present invention can also be used for the treatment of obesity and its comorbidities.
- In certain embodiments, the invention relates to compounds of Formula 1:
- or pharmaceutically acceptable salts thereof;
wherein: - R and R′ are, independently, hydrogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, or alkylcycloalkyl of 4 to 12 carbon atoms having 3 to 6 carbons in the cycloalkyl ring;
- alternatively R and R′ can be taken together with the nitrogen to which they are attached to form a ring containing 2-5 carbon atoms, wherein one of the ring carbon atoms is optionally replaced by nitrogen, sulfur or oxygen;
- R1 and R2 are, independently, hydrogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, or perfluoroalkyl of 1 to 6 carbon atoms;
- R3a and R3b are, independently, hydrogen, halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, or perfluoroalkoxy of 1 to 6 carbon atoms;
- R4, R5, R6, and R7 are, independently, hydrogen, halogen, cyano, hydroxyl, carboxyl, alkyl of 1 to 8 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, perfluoroalkoxy of 1 to 6 carbon atoms, aryl of 5 to 10 carbon atoms, aryloxy of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl having 1 to 3 heteroatoms each independently selected from nitrogen, oxygen or sulfur, alkenyl of 2 to 8 carbon atoms, alkanoyl of 2 to 6 carbon atoms, alkanoyloxy of 2 to 6 carbon atoms, carboalkoxy of 2 to 6 carbon atoms, carboxamido, alkanamido of 2 to 6 carbon atoms, alkanesulfonamido of 1 to 6 carbon atoms, amino, monoalkylamino of 1 to 6 carbon atoms, dialkylamino of 1 to 6 carbon atoms per alkyl moiety, cycloalkyl of 3 to 8 carbon atoms, or 3 to 8 membered heterocycloalkyl having 1 to 3 heteroatoms each independently selected from nitrogen, oxygen or sulfur, wherein the cycloalkyl and heterocycloalkyl groups are saturated or partially saturated; and
- n is 1, 2 or 3;
- wherein at least one of R4, R5, R6 and R7 is branched alkyl of 3 to 8 carbon atoms, branched alkenyl of 3 to 8 carbon atoms, or —Y—R8, wherein Y is selected from a direct bond, lower alkyl, lower ankenyl, O, and NH and R8 is aryl of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl, cycloalkyl of 3 to 8 carbon atoms, or 3 to 8 membered heterocycloalkyl; and
- wherein any aryl, heteroaryl, cycloalkyl or heterocycloalkyl may optionally be substituted with 1 to 5 substituents independently selected from halogen, hydroxyl, cyano, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, or perfluoroalkoxy of 1 to 6 carbon atoms.
- In certain other embodiments, the invention relates to methods for treating a patient suffering from schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, substance-induced psychotic disorder, L-DOPA-induced psychosis, psychosis associated with Alzheimer's dementia, psychosis associated with Parkinson's disease, psychosis associated with Lewy body disease, dementia, memory deficit, intellectual deficit associated with Alzheimer's disease, bipolar disorders, depressive disorders, mood episodes, anxiety disorders, adjustment disorders, eating disorders, epilepsy, sleep disorders, migraines, sexual dysfunction, substance abuse, addiction to alcohol and various other drugs, including cocaine and nicotine, gastrointestinal disorders, obesity, or a central nervous system deficiency associated with trauma, stroke, or spinal cord injury that includes administering to the patient a therapeutically effective amount of a compound of formula 1, or a pharmaceutically acceptable salt thereof.
- In still other embodiments, the invention relates to compositions comprising a compound of Formula 1 or a pharmaceutically acceptable salt thereof, and one or more pharmaceutically acceptable carriers, excipients, or diluents.
- The present invention relates to novel 1-(2,3-dihydro-1-benzofuran-2-yl)alkanamine derivatives that are agonists or partial agonists of the 2c subtype of brain serotonin receptors.
- The term “alkyl,” as used herein, refers to an aliphatic hydrocarbon chain having up to 8 carbon atoms, preferably 1 to 6 carbon atoms, and more preferably 1 to 4 carbon atoms. The term “alkyl” includes, but is not limited to, straight and branched chains such as methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, t-butyl, n-pentyl, isopentyl, neo-pentyl, n-hexyl, and isohexyl. In some embodiments, the alkyl group is preferably branched having 3 to 8 carbon atoms. The term “lower alkyl” refers to an alkyl group having 1 to 3 carbon atoms.
- The term “alkenyl,” as used herein refers to an aliphatic straight or branched hydrocarbon chain having 2 to 8 carbon atoms that may contain 1 to 3 double bonds. Examples of alkenyl groups include vinyl, prop-1-enyl, allyl, methallyl, but-1-enyl, but-2-enyl, but-3-enyl, or 3,3-dimethylbut-1-enyl. In some embodiments, the alkenyl is preferably a branched alkenyl of 3 to 8 carbon atoms. The term “lower alkenyl” refers to an alkenyl group having 1 to 3 carbon atoms.
- The term “cycloalkyl,” as used herein, refers to a saturated or partially saturated, hydrocarbon ring containing 3 to 8 carbon atoms and more preferably 5 to 7 carbon atoms. Cycloalkyl groups may be monocyclic or bicyclic, and more preferably monocyclic. Bicyclic cycloalkyl groups are preferably bridged. “Bridged” refers to a cycloalkyl group that contains at least one carbon-carbon bond between two non-adjacent carbon atoms of the cycloalkyl ring. “Partially saturated” refers to a nonaromatic cycloalkyl group containing at least one double bond and preferably one double bond. Preferably, the cycloalkyl group is saturated. The cycloalkyl group may be unsubstituted or substituted as described hereinafter. The term “alkylcycloalkyl,” as used herein, refers to the group —R-cycloalkyl, where cycloalkyl is as defined above and R is an alkyl moiety having 1 to 6, preferably 1 to 4, and more preferably 1 to 3 carbon atoms.
- The term “heterocycloalkyl,” as used herein, refers to a 3 to 8 membered, and more preferably 5 to 7 membered cycloalkyl group in which one to three carbon atoms of the cycloalkyl group are replaced with a heteroatom independently selected from oxygen, nitrogen, or sulfur. The heterocycloalkyl group may be saturated or partially saturated, and may be monocyclic or bicyclic (such as bridged). Preferably, the heterocycloalkyl is monocyclic. The heterocycloalkyl group may be unsubstituted or substituted as described hereinafter.
- The term “aryl,” as used herein refers to a 5 to 10 membered carbocyclic aromatic ring. The aryl may be monocyclic or bicyclic, and may be substituted or unsubstituted. Monocyclic aryl groups preferably have 5, 6, or 7 members and bicyclic aryl groups preferably have 8, 9 or 10 members. Exemplary aryl groups include phenyl and naphthyl.
- The term “aryloxy,” as used herein, refers to the group Ar—O—, where Ar is an aryl group of 5 to 10 carbon atoms as previously described.
- The term “heteroaryl,” as used herein, refers to a 5 to 10 membered monocyclic or bicyclic carbon containing aromatic ring having 1 to 3 of its ring members independently selected from nitrogen, sulfur or oxygen. Monocyclic rings preferably have 5 to 6 members and bicyclic rings preferably have 8 to 10 membered ring structures. The heteroaryl group may be unsubstituted or substituted as described hereinafter. Examples of heteroaryls include, but are not limited to, thienyl, furyl, pyrrolyl, imidazolyl, pyrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, indolyl, indazolyl, benzofuranyl, isobenzofuranyl, benzothienyl, isobenzothienyl, quinolyl, isoquinolyl, quinoxalinyl, or quinazolinyl.
- The term “perfluoroalkyl,” as used herein, refers to a straight or branched aliphatic hydrocarbon chain of 1 to 6 carbon atoms and preferably 1 to 3 carbon atoms, in which all hydrogens are replaced with fluorine.
- The term “alkanamido,” as used herein, refers to the group R—C(═O)—NH— where R is an alkyl group of 1 to 5 carbon atoms.
- The term “alkanoyl,” as used herein, refers to the group R—C(═O)— where R is an alkyl group of 1 to 5 carbon atoms.
- The term “alkanoyloxy,” as used herein, refers to the group R—C(═O)—O— where R is an alkyl group of 1 to 5 carbon atoms.
- The term “alkanesulfonamido,” as used herein, refers to the group R—S(O)2—NH— where R is an alkyl group of 1 to 6 carbon atoms.
- The term “alkoxy,” as used herein, refers to the group R—O— where R is an alkyl group of 1 to 6 carbon atoms.
- The term “perfluoroalkoxy,” as used herein, refers to the group R—O where R is a perfluoroalkyl group of 1 to 6 carbon atoms.
- The terms “monoalkylamino” and “dialkylamino,” as used herein, respectively refer to —NHR and —NRRa, where R and Ra are independently selected from an alkyl group of 1 to 6 carbon atoms.
- The term “carboxamido,” as used herein, refers to the group NH2—C(═O)—.
- The term “carboalkoxy,” as used herein, refers to the group R—O—C(═O)— where R is an alkyl group of 1 to 5 carbon atoms.
- The term “carboxy,” as used herein, refers to the group —COOH.
- The terms “halogen” or “halo,” as used herein, refer to chlorine, bromine, fluorine or iodine.
- The term “substituted,” as used herein, refers to a moiety, such as an aryl, heteroaryl, cycloalkyl or heterocycloalkyl moiety having from 1 to about 5 substituents, and more preferably from 1 to about 3 substituents independently selected from a halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, or perfluoroalkoxy of 1 to 6 carbon atoms. Preferred substituents are a halogen atom, a lower alkyl, a perfluoroalkyl of 1 to 3 carbon atoms, an alkoxy group of 1 to 3 carbon atoms or a perfluoroalkoxy of 1 to 3 carbon atoms.
- The terms “effective amount” and “therapeutically effective amount,” as used herein, refer to the amount of a compound of Formula 1 that, when administered to a patient, is effective to at least partially treat a condition from which the patient is suffering from. Such conditions include, but are not limited to, schizophrenia, schizoaffective disorder, schizophreniform disorder, L-DOPA-induced psychosis, bipolar disorder, obesity, obsessive compulsive disorder, depression, panic disorder, sleep disorders, eating disorders, and epilepsy.
- The term “pharmaceutically acceptable salts” or “pharmaceutically acceptable salt” refers to salts derived from treating a compound of Formula 1 with an organic or inorganic acid such as, for example, acetic, lactic, citric, cinnamic, tartaric, succinic, fumaric, maleic, malonic, mandelic, malic, oxalic, propionic, hydrochloric, hydrobromic, phosphoric, nitric, sulfuric, glycolic, pyruvic, methanesulfonic, ethanesulfonic, toluenesulfonic, salicylic, benzoic, or similarly known acceptable acids.
- The term “patient,” as used herein, refers to a mammal.
- The terms “administer,” “administering,” or “administration,” as used herein, refer to either directly administering a compound or composition to a patient, or administering a prodrug derivative or analog of the compound to the patient, which will form an equivalent amount of the active compound or substance within the patient's body.
- The terms “treat” or “treating,” as used herein, refers to partially or completely alleviating, inhibiting, preventing, ameliorating and/or relieving the condition.
- The terms “suffer” or “suffering” as used herein refers to one or more conditions that a patient has been diagnosed with, or is suspected to have.
- In certain embodiments, the invention relates to compounds of Formula 1:
- or pharmaceutically acceptable salts thereof;
wherein: - R and R′ are, independently, hydrogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, or alkylcycloalkyl of 4 to 12 carbon atoms having 3 to 6 carbons in the cycloalkyl ring;
- alternatively R and R′ can be taken together with the nitrogen to which they are attached to form a ring containing 2-5 carbon atoms, wherein one of the ring carbon atoms is optionally replaced by nitrogen, sulfur or oxygen;
- R1 and R2 are each, independently, hydrogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, or perfluoroalkyl of 1 to 6 carbon atoms;
- R3a and R3b are, independently, hydrogen, halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, or perfluoroalkoxy of 1 to 6 carbon atoms;
- R4, R5, R6, and R7 are, independently, hydrogen, halogen, cyano, hydroxyl, carboxyl, alkyl of 1 to 8 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, perfluoroalkoxy of 1 to 6 carbon atoms, aryl of 5 to 10 carbon atoms, aryloxy of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl having 1 to 3 heteroatoms each independently selected from nitrogen, oxygen or sulfur, alkenyl of 2 to 8 carbon atoms, alkanoyl of 2 to 6 carbon atoms, alkanoyloxy of 2 to 6 carbon atoms, carboalkoxy of 2 to 6 carbon atoms, carboxamido, alkanamido of 2 to 6 carbon atoms, alkanesulfonamido of 1 to 6 carbon atoms, amino, monoalkylamino of 1 to 6 carbon atoms, dialkylamino of 1 to 6 carbon atoms per alkyl moiety, cycloalkyl of 3 to 8 carbon atoms, or 3 to 8 membered heterocycloalkyl having 1 to 3 heteroatoms each independently selected from nitrogen, oxygen or sulfur, wherein the cycloalkyl and heterocycloalkyl groups are saturated or partially saturated; and
- n is 1, 2 or 3;
- wherein at least one of R4, R5, R6 and R7 is branched alkyl of 3 to 8 carbon atoms, branched alkenyl of 3 to 8 carbon atoms, or —Y—R8, wherein Y is selected from a direct bond, lower alkyl, lower ankenyl, O, and NH and R8 is aryl of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl, cycloalkyl of 3 to 8 carbon atoms, or 3 to 8 membered heterocycloalkyl; and
- wherein any aryl, heteroaryl, cycloalkyl or heterocycloalkyl may optionally be substituted with 1 to 5 substituents independently selected from halogen, hydroxyl, cyano, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, or perfluoroalkoxy of 1 to 6 carbon atoms.
- As set forth above, R and R′ are, independently, hydrogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, or alkylcycloalkyl of 4 to 12 carbon atoms having 3 to 6 carbons in the cycloalkyl ring. Alternatively R and R′ can be taken together with the nitrogen to which they are attached to form a ring containing 2-5 carbon atoms, wherein one of the ring carbon atoms is optionally replaced by nitrogen, sulfur or oxygen. In some embodiments, R, R′, R1, and R2 are each, independently, hydrogen or alkyl of 1 to 6 carbon atoms. In certain embodiments, R′ is hydrogen, and R, R1, and R2 are each independently hydrogen or alkyl of 1 to 6 carbon atoms. In certain preferred embodiments, each of R, R′, R1, and R2 is hydrogen.
- As also set forth above, R3a and R3b may each be selected, independently, from hydrogen, halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, and perfluoroalkoxy of 1 to 6 carbon atoms. In certain embodiments, R3a and R3b are each independently hydrogen or alkyl of 1 to 3 carbon atoms and more preferably hydrogen.
- R4, R5, R6, and R7 may each be selected, independently, from hydrogen, halogen, cyano, hydroxyl, carboxyl, alkyl of 1 to 8 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, perfluoroalkoxy of 1 to 6 carbon atoms, aryl of 5 to 10 carbon atoms, aryloxy of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl having 1 to 3 heteroatoms each independently selected from nitrogen, oxygen or sulfur, alkenyl of 2 to 8 carbon atoms, alkanoyl of 2 to 6 carbon atoms, alkanoyloxy of 2 to 6 carbon atoms, carboalkoxy of 2 to 6 carbon atoms, carboxamido, alkanamido of 2 to 6 carbon atoms, alkanesulfonamido of 1 to 6 carbon atoms, amino, monoalkylamino of 1 to 6 carbon atoms, dialkylamino of 1 to 6 carbon atoms per alkyl moiety, cycloalkyl of 3 to 8 carbon atoms, and 3 to 8 membered heterocycloalkyl having 1 to 3 heteroatoms each independently selected from nitrogen, oxygen or sulfur, wherein the cycloalkyl and heterocycloalkyl groups are saturated or partially saturated. Moreover, at least one of R4, R5, R6 and R7 is —Y—R8, wherein Y is selected from a direct bond, lower alkyl, lower ankenyl, O, and NH, and R8 is an aryl of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl, cycloalkyl of 3 to 8 carbon atoms, 3 to 8 membered heterocycloalkyl, branched alkyl of 3 to 8 carbon atoms, or branched alkenyl of 3 to 8 carbon atoms. Additionally, where any of R4, R5, R6, and R7 is aryl, heteroaryl, cycloalkyl or heterocycloalkyl, it may optionally be substituted with 1 to 5 substituents independently selected from halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, and perfluoroalkoxy of 1 to 6 carbon atoms.
- In certain preferred embodiments, Y is a direct bond.
- In certain embodiments, R4, R5, R6, and R7 are preferably selected from hydrogen, halogen, alkyl of 1 to 8 carbon atoms, perfluoroalkyl of 1 to 3 carbon atoms, alkoxy of 1 to 3 carbon atoms, alkenyl of 2 to 8 carbon atoms, cycloalkyl of 3 to 8 carbon atoms, 3 to 8 membered heterocycloalkyl, aryl of 5 to 10 carbon atoms, or 5 to 10 membered heteroaryl, provided that at least one of R4, R5, R6 and R7 is an aryl of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl, cycloalkyl of 3 to 8 carbon atoms, 3 to 8 membered heterocycloalkyl, branched alkyl of 3 to 8 carbon atoms, or branched alkenyl of 3 to 8 carbon atoms, wherein any aryl, heteroaryl, cycloalkyl or heterocycloalkyl may optionally be substituted with 1 to 5 substituents independently selected from halogen, hydroxyl, cyano, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, and perfluoroalkoxy of 1 to 6 carbon atoms. Preferably, at least one of R4, R5, R6 and R7 and more preferably at least one of R4, R5 and R7 is an aryl of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl, cycloalkyl of 3 to 8 carbon atoms, or 3 to 8 membered heterocycloalkyl.
- In certain preferred embodiments of the invention, R4, R5, and R6 are, independently, hydrogen, halogen, alkyl of 1 to 3 carbon atoms, alkoxy of 1 to 3 carbon atoms, perfluoroalkyl of 1 to 3 carbon atoms, or perfluoroalkoxy of 1 to 3 carbon atoms, and R7 is a branched alkyl of 3 to 8 carbon atoms, branched alkenyl of 3 to 8 carbon atoms, cycloalkyl of 3 to 8 carbon atoms, 3 to 8 membered heterocycloalkyl, aryl of 5 to 10 carbon atoms, or 5 to 10 membered heteroaryl, wherein any aryl, heteroaryl, cycloalkyl or heterocycloalkyl may optionally be substituted with 1 to 5 substituents independently selected from halogen, hydroxyl, cyano, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, and perfluoroalkoxy of 1 to 6 carbon atoms. More preferably, R7 is a branched alkyl of 3 to 6 carbon atoms, branched alkenyl of 3 to 6 carbon atoms, cycloalkyl of 3 to 8 carbon atoms, aryl of 5 to 10 carbon atoms, or 5 to 10 membered heteroaryl, each of which may optionally be substituted with 1 to 5 substituents independently selected from halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, and perfluoroalkoxy of 1 to 6 carbon atoms.
- In other preferred embodiments of the invention, each of R4, R5 and R7 is, independently, aryl of 5 to 10 carbon atoms, cycloalkyl of 5 to 7 carbon atoms, or 5 to 10 membered heteroaryl, and more preferably is phenyl or napthyl, or a 5 to 10 membered heteroaryl selected from thienyl, furyl, pyrrolyl, imidazolyl, pyrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, indolyl, indazolyl, benzofuranyl, isobenzofuranyl, benzothienyl, isobenzothienyl, quinolyl, isoquinolyl, quinoxalinyl, or quinazolinyl, each of which may optionally be substituted with 1 to 5 substituents independently selected from halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, and perfluoroalkoxy of 1 to 6 carbon atoms.
- In certain other preferred embodiments of the invention, R7 is aryl of 5 to 10 carbon atoms, cycloalkyl of 5 to 7 carbon atoms, branched alkyl of 3 to 6 carbon atoms, branched alkenyl of 3 to 6 carbon atoms, or 5 to 10 membered heteroaryl, and more preferably is phenyl or napthyl, or a 5 to 10 membered heteroaryl selected from thienyl, furyl, pyrrolyl, imidazolyl, pyrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, indolyl, indazolyl, benzofuranyl, isobenzofuranyl, benzothienyl, isobenzothienyl, quinolyl, isoquinolyl, quinoxalinyl, or quinazolinyl, each of which may optionally be substituted with 1 to 5 substituents independently selected from halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, and perfluoroalkoxy of 1 to 6 carbon atoms. In preferred compounds of this embodiment, R, R′, R1, and R2 are each, independently, hydrogen or alkyl of 1 to 6 carbon atoms.
- In other preferred embodiments, R7 is aryl of 5 to 10 carbon atoms, cycloalkyl of 5 to 7 carbon atoms, or 5 to 10 membered heteroaryl, or more preferably phenyl, wherein said aryl (including phenyl), cycloalkyl or heteroaryl may optionally be substituted with 1 to 5 substituents independently selected from halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, and perfluoroalkoxy of 1 to 6 carbon atoms. In preferred compounds of this embodiment, at least one of R4 and R5 is halogen, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 3 carbon atoms, or alkoxy of 1 to 6 carbon atoms. Even more preferred compounds are those in which at least one of R4 and R5 is halogen, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 3 carbon atoms, or alkoxy of 1 to 6 carbon atoms, and R, R′, R1, and R2 are each, independently, hydrogen or alkyl of 1 to 6 carbon atoms. In other preferred embodiments, R7 is aryl of 5 to 10 carbon atoms, optionally substituted with 1 to 3 substituents independently selected from a halogen atom, a lower alkyl, a perfluoroalkyl of 1 to 3 carbon atoms, an alkoxy group of 1 to 3 carbon atoms or a perfluoroalkoxy of 1 to 3 carbon atoms.
- In certain embodiments, R7 is selected from the group consisting of:
- 4-methoxy-2-methylphenyl,
- 2-chloro-4-(trifluoromethyl)phenyl,
- 2-chloro-4-methoxyphenyl,
- 2-chloro-4-(trifluoromethoxy)phenyl,
- ({7-[4-methoxy-2-(trifluoromethyl)phenyl,
- 4-ethoxy-2-methylphenyl,
- 4-ethoxy-2-(trifluoromethyl)phenylamine,
- 4-chloro-2-(trifluoromethyl)phenyl,
- 4-fluoro-2-(trifluoromethyl)phenyl,
- 2-ethyl-4-methoxyphenyl,
- 2,4-dichlorophenyl,
- 2,4-dimethylphenyl,
- 4-isopropyl-2-methoxyphenyl,
- 4-isopropoxy-2-(trifluoromethyl)phenyl,
- 2-chloro-4-isopropoxyphenyl,
- 4-chloro-2-methylphenyl,
- 2,6-difluorophenyl,
- 2-chloro-6-fluorophenyl,
- 2-fluoro-6-(trifluoromethyl)phenyl,
- 2,6-bis(trifluoromethyl)phenyl,
- 2,3-dichlorophenyl,
- 3-chloro-2-fluorophenyl,
- 2-chloro-3-methylphenyl,
- 2,6-dichloro-4-methoxyphenyl, and
- 5-fluoro-2-methoxyphenyl.
- In the compounds of the present invention, n is 1, 2 or 3, preferably 1 or 2, and more preferably 1.
- In still further preferred embodiments of the invention, the compounds of Formula 1 are:
- (±)-1-(4-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (+)-1-(4-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (−)-1-(4-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (±)-1-[4-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[4-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[4-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-(7-cyclopentyl-2,3-dihydro-1-benzofuran-2-yl)methylamine,
- (−)-(7-cyclopentyl-2,3-dihydro-1-benzofuran-2-yl)methylamine,
- (+)-(7-cyclopentyl-2,3-dihydro-1-benzofuran-2-yl)methylamine,
- (±)-(5-chloro-7-cyclohexyl-2,3-dihydro-1-benzofuran-2-yl)methylamine,
- (±)-N-[(5-chloro-7-cyclohexyl-2,3-dihydro-1-benzofuran-2-yl)methyl]-N-methylamine,
- (±)-(7-tert-butyl-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methylamine,
- (±)-(7-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methylamine,
- (−)-(7-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methylamine,
- (+)-(7-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methylamine,
- (±)-1-(5-chloro-7-isopropyl-4-methyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (−)-1-(5-chloro-7-isopropyl-4-methyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (+)-1-(5-chloro-7-isopropyl-4-methyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (±)-1-(7-tert-butyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (−)-1-(7-tert-butyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (+)-1-(7-tert-butyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (±)-1-(7-tert-butyl-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (−)-1-(7-tert-butyl-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (+)-1-(7-tert-butyl-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (±)-(6-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (±)-1-{7-[3,5-bis(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
- (±)-1-[7-(1-naphthyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-[7-(3-chloro-4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-[7-(3,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-(7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (+)-(1-(7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (−)-1-(7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (±)-1-[7-(2-naphthyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-(2′,3′-dihydro-2,7′-bi-1-benzofuran-2′-yl)methanamine,
- (±)-1-[7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-(7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (+)-1-(7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (−)-1-(7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (±)-1-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-{7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
- (−)-1-{7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
- (+)-1-{7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
- (±)-1-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-[7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[7-(2-isopropylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylamine,
- (+)-[7-(2-isopropylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylamine,
- (−)-[7-(2-isopropylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylamine,
- (±)-1-[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-[7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-{7-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
- (±)-1-[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-[7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-[7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-[7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-{7-[4-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
- (±)-1-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-(5-chloro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (+)-1-(5-chloro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (−)-1-(5-chloro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (±)-1-[5-chloro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-[5-chloro-7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-[5-chloro-7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-(5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylamine,
- (−)-(5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylamine,
- (+)-(5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylamine,
- (+)-N-[(5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]-N-methylamine,
- (−)-N-[(5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]-N-methylamine,
- (±)-1-[5-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[5-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[5-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-(4-fluoro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (±)-1-[4-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-[7-(2-chlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[7-(2-chlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[7-(2-chlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-(5-fluoro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (±)-1-[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-[5-fluoro-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-{5-fluoro-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
- (±)-(4,5-difluoro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methylamine,
- (±)-1-[4,5-difluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-(5-chloro-2-methyl-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (±)-(5-chloro-2-methyl-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylamine,
- (±)-(5-chloro-2-methyl-7-thien-2-yl-2,3-dihydro-1-benzofuran-2-yl)methylamine,
- (−)-1-(7-tert-butyl-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (+)-1-(7-tert-butyl-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (±)-1-{7-[(1E)-3,3-dimethylbut-1-enyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
- (±)-1-[7-(3,3-dimethylbutyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-[4-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-{4-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
- (−)-1-{4-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
- (+)-1-{4-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
- (±)-1-[4-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[4-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[4-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-{7-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
- (+)-1-{7-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
- (+)-1-{7-[4-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
- (−)-1-{7-[4-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
- (±)-1-[7-(2,6-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-1-[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-1-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-1-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-{5-fluoro-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
- (+)-1-{5-fluoro-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine,
- (±)-1-(7-benzyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (+)-1-(7-benzyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (−)-1-(7-benzyl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (±)-1-{7-[(E)-2-phenylvinyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine, or
- (±)-1-[7-(2-phenylethyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
or a pharmaceutically acceptable salt thereof. - In other preferred embodiments of the invention, the compounds of Formula 1 are:
- (±)-1-[7-(2,3-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-{[7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (−)-{[(7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (+)-{[(7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (+)-{[7-(4-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (−)-{[7-(4-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,5-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,5-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (+)-{[7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (−)-{[7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(4-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(5-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(5-chloro-2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-[(7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine,
- (+)-{[7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (−)-{[7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-phenylamine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-(4-methylphenyl)amine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-(4-chlorophenyl)amine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-(4-methoxyphenyl)amine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-[4-(trifluoromethyl)phenyl]amine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-(4-fluorophenyl)amine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-(3,4-dichlorophenyl)amine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-(2,4-dimethylphenyl)amine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-(3,4-dimethylphenyl)amine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-(3-methylphenyl)amine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-(3-fluorophenyl)amine,
- (±)—N-2-(aminomethyl)-N-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-7-amine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-(4-methoxy-3-methylphenyl)amine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-(3,5-difluorophenyl)amine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-(3-trifluoromethoxy)phenyl]amine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-(3-chloro-4-methylphenyl)amine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-(3,5-dichlorophenyl)amine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-(3-chlorophenyl)amine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-(4-chloro-3-methylphenyl)amine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-(3,5-dimethylphenyl)amine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-(3-chloro-4-fluorophenyl)amine,
- (±)-N-[2-(aminomethyl)-2,3-dihydro-1-benzofuran-7-yl]-N-(2-fluorophenyl)amine,
- (±)-{[5-fluoro-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-fluoro-7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-fluoro-7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-fluoro-7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-fluoro-7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-fluoro-7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-fluoro-7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-fluoro-7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-[(5-fluoro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine,
- (±)-{[5-fluoro-7-(3-furyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-[(5-fluoro-7-pyridin-2-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine,
- (±)-[(5-fluoro-7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine,
- (−)-[(5-fluoro-7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine,
- (+)-{[5-fluoro-7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-[(5-fluoro-7-pyridin-4-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine,
- (±)-[(5-fluoro-7-pyrimidin-5-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine,
- (±)-{[7-(2,3-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (−)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (+)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,4-difluorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,4-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (−)-{[5-fluoro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (+)-{[5-fluoro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,4-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,5-difluorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,5-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,5-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,5-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-fluoro-7-(5-methoxy-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-fluoro-7-(2-methoxy-5-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,6-difluorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (+)-{[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (−)-{[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-N-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}cyclopropanamine,
- (±)-1-cyclopropyl-N-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methanamine,
- (±)-N-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}cyclobutanamine,
- (±)-N-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}ethanamine,
- (±)-N-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}propan-1-amine,
- (±)-N-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}propan-2-amine,
- (±)-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}dimethylamine,
- (±)-1-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}piperidine
- (±)-1-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}morpholine
- (±)-1-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}pyrrolidine
- (±)-{[5-chloro-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-chloro-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-chloro-7-(3-furyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-chloro-7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (−)-{[5-chloro-7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (+)-{[5-chloro-7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-chloro-7-(2,3-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-chloro-7-(2,3-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-chloro-7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-chloro-7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-chloro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (−)-{[5-chloro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (+)-{[5-chloro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-chloro-7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-chloro-7-(2,5-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-chloro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-chloro-7-(5-chloro-2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-chloro-7-(3,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-chloro-7-(3-chloro-4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (−)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (+)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-chloro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (+)-{[5-chloro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (−)-{[5-chloro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[(5-chloro-7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine,
- (±)-N-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}cyclopropanamine,
- (±)-N-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}(cyclopropylmethyl)amine,
- (±)-N-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}cyclobutanamine,
- (±)-N-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}ethanamine,
- (±)-N-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}propan-2-amine,
- (±)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}dimethylamine,
- (±)-1-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}piperidine
- (±)-4-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}morpholine
- (±)-4-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}thiomorpholine
- (±)-N-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}propan-1-amine,
- (±)-1-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}piperazine
- (±)-1-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}pyrrolidine
- (±)-{[(5-methyl-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine,
- (±)-{[7-(2-methylphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2-fluorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2-methoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2-chlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-({5-methyl-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)amine,
- (±)-{[7-(3-chlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(3-methylphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(4-methylphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(4-fluorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(4-chlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(4-methoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (−)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (+)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,4-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (−)-{[7-(2,4-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (+)-{[7-(2,4-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,5-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,6-dimethylphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,6-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (−)-{[7-(2,6-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (+)-{[7-(2,6-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-ethyl-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-ethyl-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-isopropyl-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-isopropyl-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-cyclopentyl-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-cyclopentyl-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-isocyano-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-isocyano-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-(trifluoromethyl)-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-(trifluoromethyl)-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-(trifluoromethyl)-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-(trifluoromethyl)-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-(trifluoromethyl)-7-(2-(trifluoromethyl)phenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-(trifluoromethyl)-7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-(trifluoromethyl)-7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-(trifluoromethyl)-7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-(trifluoromethyl)-7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-(trifluoromethyl)-7-(3-(trifluoromethyl)phenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-(trifluoromethyl)-7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-(trifluoromethyl)-7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-(trifluoromethyl)-7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-(trifluoromethyl)-7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-(trifluoromethyl)-7-(4-(trifluoromethyl)phenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,3-dimethylphenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,3-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,3-dichlorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,3-dimethoxyphenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,4-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,4-dimethoxyphenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(3,4-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(3-chloro-4-fluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,5-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,5-dichlorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,6-dimethylphenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(4-butylphenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-4-[2-(aminomethyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-7-yl]benzonitrile
- (±)-{[7-(3-furyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-thien-3-yl-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-pyridin-3-yl-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-[(5,7-diphenyl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine,
- (±)-{[7-(2-chlorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(3-chlorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(4-chlorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2-fluorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(3-fluorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(4-fluorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2-methylphenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(3-methylphenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(4-methylphenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,4-difluorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,5-dichlorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2-fluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2-chlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2-methylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2-methoxyphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[5-methoxy-7-(3-thienyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,3-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,3-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,3-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,4-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,4-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,5-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,5-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (+)-{[7-(2,5-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (−)-{[7-(2,5-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,5-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,5-dimethoxylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(5-chloro-2-methoxyphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(3-chloro-4-fluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-(2,6-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-fluoro-5-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-fluoro-5-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-fluoro-5-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-({7-fluoro-5-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)amine,
- (±)-{[7-fluoro-5-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-fluoro-5-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-fluoro-5-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-fluoro-5-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-({7-fluoro-5-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)amine,
- (±)-{[7-fluoro-5-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-fluoro-5-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-fluoro-5-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[7-fluoro-5-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-({7-fluoro-5-[4-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)amine,
- (±)-{[7-fluoro-5-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-N-{[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}ethanamine,
- (±)-N-{[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}cyclopropanamine,
- (±)-N-{[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}cyclobutanamine,
- (±)-N-{[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}propan-2-amine,
- (±)-{[6-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (+)-{[6-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (−)-{[6-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[{[7-(2-chlorophenyl)-6-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[6-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[6-chloro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{[6-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[6-fluoro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[6-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[6-chloro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-[(N-methyl-1-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-N-methyl-1-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-N-methyl-1-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-N-methyl-1-[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-N-methyl-1-[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(2,3-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(2,5-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(2,5-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(5-chloro-2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(5-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-[(N-methyl-1-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-{[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (+)-{[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-N-methyl-1-(7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl)methanamine,
- (±)-[(N-methyl-1-[7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-{[5-fluoro-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[5-fluoro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (−)-{[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (+)-{[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[5-fluoro-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-[7-(2,4-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (−)-[7-(2,4-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (+)-[7-(2,4-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,5-difluorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,5-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (+)-{[5-fluoro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (−)-{[5-fluoro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,5-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[5-fluoro-7-(5-methoxy-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[5-fluoro-7-(2-methoxy-5-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(5-chloro-2-methoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-[(5-fluoro-7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]methylamine,
- (±)-[(5-chloro-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-[(5-chloro-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[5-chloro-7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[5-chloro-7-(2,3-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[5-chloro-7-(2,3-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[5-chloro-7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[5-chloro-7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[5-chloro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[5-chloro-7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[5-chloro-7-(2,5-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[5-chloro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[5-chloro-7-(5-chloro-2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[5-chloro-7-(3,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-[5-chloro-7-(3-chloro-4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2-fluorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2-chlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2-methoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(3-methylphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(3-chlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(4-methylphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(4-chlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(4-fluorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(4-methoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,4-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,5-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (+)-{[7-(2,5-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (−)-{[7-(2,5-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,6-dimethylphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,6-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2-fluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2-chlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2-methylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,3-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,3-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,3-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,4-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,5-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,5-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,5-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,5-dimethoxyphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(5-chloro-2-methoxyphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(3-chloro-4-fluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,6-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2-chlorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(3-chlorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(4-chlorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2-fluorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(3-fluorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(4-fluorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2-methylphenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(3-methylphenyl)-5-phenyl-2,3-dihydro 1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(4-methylphenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2-methoxyphenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(3-methoxyphenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(4-methoxyphenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-(2,4-difluorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[N-methyl-1-[7-phenyl-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-N-methyl-1-[7-(3-methylphenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-N-methyl-1-[7-(3-fluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-N-methyl-1-[7-(2,3-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-N-methyl-1-[7-(3,4-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-N-methyl-1-[7-(2,5-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-N-methyl-1-[7-(2,3-dichlorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-{[7-(3-chloro-4-fluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-N-methyl-1-[7-(2,4-dimethoxyphenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (±)-{[7-[3,5-bis(trifluoromethyl)phenyl]-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-fluoro-5-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-fluoro-5-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{[7-fluoro-5-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{7-fluoro-5-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)methylamine,
- (±)-{7-fluoro-5-[2-methoxyphenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)methylamine,
- (±)-{7-fluoro-5-[3-methylphenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)methylamine,
- (±)-{7-fluoro-5-[3-chlorophenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)methylamine,
- (±)-{[7-fluoro-5-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{7-fluoro-5-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)methylamine,
- (±)-{7-fluoro-5-[3-methoxyphenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)methylamine,
- (±)-{7-fluoro-5-[4-methylphenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)methylamine,
- (±)-{7-fluoro-5-[4-chlorophenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)methylamine,
- (±)-{[7-fluoro-5-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (±)-{7-fluoro-5-[4-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)methylamine,
- (±)-{7-fluoro-5-[4-methoxyphenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)methylamine,
- (+)-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (−) {[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (R)-[7-(2-chloro-phenyl)-(5-Fluoro-2,3-dihydro-benzofuran-2-ylmethyl)methyl-amine,
- (R)-[7-(2,6-dichloro-phenyl)-5-Fluoro-2,3-dihydro-benzofuran-2-ylmethyl]ethylamine,
- (R)-[7-(2,6-dichloro-phenyl)-5-Fluoro-2,3-dihydro-benzofuran-2-ylmethyl]dimethylamine,
- {[(2R)-7-(5-chloro-2-methylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- {[(2R)-7-(4-chloro-2-methylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (−)-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (+)-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine,
- (±)-{2-[6-chloro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]ethyl}amine,
- (±)-{2-[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]ethyl}amine,
- (±)-{2-[7-(2-methoxyphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]ethyl}amine,
- (±)-{N-methyl-1-[(7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-{N-methyl-1-[(7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (−)-{N-methyl-1-[(7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine,
- (+)-{[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (−)-{[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (−)-{[7-(2,6-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (+)-{[7-(2,6-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (+)-{[5-chloro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (−)-{[5-chloro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (−)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (+)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (+)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (−)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine,
- (−)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine, or
- (+)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine;
or a pharmaceutically acceptable salt thereof. - The compounds of Formula 1 have affinity for and agonist or partial agonist activity at the 2c subtype of brain serotonin receptors and are thus of interest for the treatment of mental disorders, including psychotic disorders such as schizophrenia including paranoid type, disorganized type, catatonic type, and undifferentiated type, schizophreniform disorder, schizoaffective disorder, delusional disorder, substance-induced psychotic disorder, and psychotic disorder not otherwise specified; L-DOPA-induced psychosis; psychosis associated with Alzheimer's dementia; psychosis associated with Parkinson's disease; psychosis associated with Lewy body disease; bipolar disorders such as bipolar I disorder, bipolar II disorder, and cyclothymic disorder; depressive disorders such as major depressive disorder, dysthymic disorder, substance-induced mood disorder, and depressive disorder not otherwise specified; mood episodes such as major depressive episode, manic episode, mixed episode, and hypomanic episode; anxiety disorders such as panic attack, agoraphobia, panic disorder, specific phobia, social phobia, obsessive compulsive disorder, posttraumatic stress disorder, acute stress disorder, generalized anxiety disorder, separation anxiety disorder, substance-induced anxiety disorder, and anxiety disorder not otherwise specified; adjustment disorders such as adjustment disorders with anxiety and/or depressed mood; intellectual deficit disorders such as dementia, Alzheimer's disease, and memory deficit; eating disorders (e.g., hyperphagia, bulimia or anorexia nervosa) and combinations of these mental disorders that may be present in a mammal. For example, mood disorders such as depressive disorders or bipolar disorders often accompany psychotic disorders such as schizophrenia. A more complete description of the aforementioned mental disorders can be found in the Diagnostic and Statistical Manual of Mental Disorders, 4th edition, Washington, D.C., American Psychiatric Association (1994), incorporated herein by reference in its entirety.
- The compounds of formula 1 are also of interest for the treatment of epilepsy; migraines; sexual dysfunction; sleep disorders; substance abuse, including addiction to alcohol and various drugs, including cocaine and nicotine; gastrointestinal disorders, such as malfunction of gastrointestinal motility; and obesity, with its consequent comorbidities including Type II diabetes, cardiovascular disease, hypertension, hyperlipidemia, stroke, osteoarthritis, sleep apnea, gall bladder disease, gout, some cancers, some infertility, and early mortality.
- The compounds of Formula 1 can also be used to treat central nervous system deficiencies associated, for example, with trauma, stroke, and spinal cord injuries. The compounds of Formula 1 can therefore be used to improve or inhibit further degradation of central nervous system activity during or following the malady or trauma in question. Included in these improvements are maintenance or improvement in motor and motility skills, control, coordination and strength.
- In certain embodiments, the present invention therefore provides methods of treating, each of the conditions listed above in a patient, preferably in a human, the methods including administering a therapeutically effective amount of at least one compound of Formula 1 or a pharmaceutically acceptable salt thereof to a patient suffering from such a condition.
- In other embodiments, the invention relates to compositions comprising at least one compound of Formula 1, or a pharmaceutically acceptable salt thereof, and one or more pharmaceutically acceptable carriers, excipients, or diluents. Such compositions include pharmaceutical compositions for treating or controlling disease states or conditions of the central nervous system. In certain embodiments, the compositions comprise mixtures of one or more compounds of Formula 1.
- Certain of the compounds of Formula 1 contain stereogenic carbon atoms or other chiral elements (i.e. chirality axis) and thus give rise to stereoisomers, including enantiomers, diastereomers, and in the case of biphenyls, the formation of atropisomers. For definitions and an extensive discourse on atropisomers, see: Eliel, E. L. Stereochemistry of Organic Compounds (John Wiley & Sons, 1994, p 1142), which is incorporated herein by reference in its entirety. Although the stereochemistry is not shown in Formula 1, Formula 1 includes all of the stereoisomers of the 1-(2,3-dihydro-1-benzofuran-2-yl)alkanamine derivatives, as well as mixtures of the stereoisomers. Throughout this application, the name of the product, where the absolute configuration of an asymmetric center is not indicated, is intended to embrace the individual stereoisomers as well as mixtures of stereoisomers. When it is necessary to distinguish the enantiomers from one another and from the racemate, the sign of the optical rotation [(+), (−) and (±)] is utilized. Furthermore, throughout this application, the designations R* and S* are used to indicate relative stereochemistry, employing the Chemical Abstracts convention which automatically assigns R* to the lowest numbered asymmetric center.
- Where a stereoisomer is preferred, it may, in some embodiments, be provided substantially free of the corresponding stereoisomer. Thus, a stereoisomer substantially free of the corresponding stereoisomer refers to a compound that is isolated or separated via separation techniques or prepared free of the corresponding stereoisomer. “Substantially free,” as used herein, means that the compound is made up of a significantly greater proportion of one stereoisomer. In preferred embodiments, the compound is made up of at least about 90% by weight of a preferred stereoisomer. In other embodiments of the invention, the compound is made up of at least about 99% by weight of a preferred stereoisomer. Preferred stereoisomers can be isolated from racemic mixtures by any method known to those skilled in the art, including high performance liquid chromatography (HPLC) and the formation and crystallization of chiral salts, or preferred stereoisomers can be prepared by methods described herein. Methods for the preparation of preferred stereoisomers are described, for example, in Jacques, et al., Enantiomers. Racemates and Resolutions (Wiley Interscience, New York, 1981); Wilen, S. H., et al., Tetrahedron 33:2725 (1977); Eliel, E. L. Stereochemistry of Carbon Compounds (McGraw-Hill, NY, 1962); and Wilen, S. H. Tables of Resolving Agents and Optical Resolutions p. 268 (E. L. Eliel, Ed., Univ. of Notre Dame Press, Notre Dame, Ind. 1972), each of which is hereby incorporated by reference in its entirety.
- This invention also provides processes for preparing compounds of formula I which processes include one of the following:
- a) reacting a compound of formula 7
- wherein R1, R2, R3, R4, R5, R6, and R7 are as defined herein, with sodium azide and reducing the product to give a compound of formula 1 wherein n is 1 and R and R′ are both H;
or
b) reacting a compound of formula 7 as defined above with an amine of formula NHRR′ where R and R′ are as defined herein to give a corresponding compound of formula 1 wherein n is 1;
or
c) reacting a compound of formula 7 as defined above with sodium cyanide followed by reduction to give a compound of formula 1 wherein n is 2 and R and R′ are both H;
d) converting a compound of formula 1 as defined herein to a pharmaceutically acceptable salt or vice versa;
or
e) isolating a specific enantiomer or diastereomer of a compound of formula 1 or a pharmaceutically acceptable salt thereof as defined herein from a mixture thereof. - The 1-(2,3-dihydro-1-benzofuran-2-yl)alkanamine derivatives of Formula 1 may be prepared as illustrated in Scheme I.
- Variables used are as defined for Formula 1, unless otherwise noted. The appropriately substituted phenol (2) is alkylated with an appropriately substituted allyl bromide or alcohol (3) in the presence of a suitable base such as potassium carbonate in a solvent such as N,N-dimethylformamide. The phenols, allyl bromides, and allyl alcohols appropriate for the synthesis of the compounds of formula I are either commercially available or can readily be prepared by one skilled in the art. The resulting allyl ether (4) is treated in refluxing mesitylene or other suitable high boiling solvent to afford the desired Claisen rearrangement product. The 2-allyl phenol (5) intermediate is subjected to epoxidation of the double bond with 3-chloroperoxybenzoic acid in dichloromethane. The resulting epoxy phenol intermediate is treated with a suitable base such as potassium carbonate in a solvent such as methanol to induce cyclization to give the 2,3-dihydro-1-benzofuran-2-yl)methanol (6). Treatment of (6) with p-toluenesulfonyl chloride and a suitable base such as pyridine affords the tosylate (7). Conversion of (7) to the amine (1) can be accomplished, for example, by treatment with sodium azide in a solvent such as dimethylsulfoxide followed by reduction of the azide or direct treatment with an appropriately substituted amine to provide the compounds of Formula 1. Additionally, longer alkyl chains (i.e. 2-aminoethyl) may be prepared, for example, via treatment of (7) with sodium cyanide in a solvent such as dimethylsulfoxide followed by reduction of the nitrile.
- The preparation of appropriately substituted phenols (2) in Scheme I, in particular the 7-aryl substituted phenols, is illustrated in Scheme Ia.
- Utilization of a 2-halogenated methoxy benzene or a suitably protected 2-halogenated phenol (2a) permits the introduction of the aromatic substitutent through a palladium-catalyzed cross coupling reaction (i.e. Suzuki reaction) with the desired boronic acid. Treatment of (2a) with a catalyst such as dichlorobis(tri-o-tolylphosphine)-palladium(II) in the presence of a suitable base such as potassium carbonate in a solvent such as dioxane provides the biaryl system. Subsequent removal of the protecting group, in this example demethylation of (2b) via reaction with borontribromide in dichloromethane affords the phenol (2).
- Alternatively, the phenols (2) may be prepared by a reversal of the inherent reactivity associated with the partners in the cross-coupling reaction as shown in Scheme Ib.
- Installation of the biaryl system may also be accomplished via a palladium-catalyzed cross coupling reaction (i.e. Suzuki reaction) of appropriate derivatives of 2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (7) with the desired boronic acid (Scheme Ic). Treatment of (7) with a catalyst such as dichlorobis(tri-o-tolylphosphine)-palladium(II) in the presence of a suitable base such as potassium carbonate in a solvent such as dioxane provides the biaryl system.
- Alternatively, installation of the biaryl system may be accomplished via a palladium-catalyzed cross coupling reaction (i.e. Suzuki reaction) of appropriate 1-(2,3-dihydro-1-benzofuran-2-yl) derivatives (1a) in either racemic or stereochemically pure form following separation of the enantiomers. For example, treatment of 1a and a boronic acid (Scheme Id) with a catalyst such as dichlorobis(tri-o-tolylphosphine)-palladium(II) in the presence of a suitable base such as potassium carbonate (as described previously) provides the desired biaryl system. Deprotection of the resultant product from the coupling procedure with, for example, iodotrimethylsilane in a solvent such as acetonitrile (for X=NRCbz) then affords the title compounds of Formula 1.
- The compounds of Formula 1 can also be prepared in a stereoselective manner as illustrated in Scheme II.
- Protection of the 2-allyl phenol (5) with a suitable protecting group such as benzyl by treatment with benzyl bromide in the presence of a suitable base such as potassium carbonate in a solvent such as N,N-dimethylformamide gives the benzyl ether (8). Treatment of (8) utilizing extant methodology known to one skilled in the art for the stereoselective oxidation of double bonds such as the Sharpless Asymmetric Dihydroxylation (A-D) provides the diol (9) in stereochemically enriched form. Many methods are available to one skilled in the art for the transfer of the stereochemical information present in (9) into the compounds of formula (1) with retention of stereochemical integrity. One such method involves deprotection of the benzyl ether with catalytic palladium on carbon under a hydrogen atmosphere (45 psi) in a solvent, such as methanol, to provide triol (10). Formation to the previously described 2,3-dihydro-1-benzofuran-2-yl)methanol (6) can be accomplished by treatment of (9) with hydrogen bromide in acetic acid to provide the intermediate vicinal acetoxy bromide followed by cyclization with a suitable base such as potassium carbonate in a solvent such as methanol.
- Alternatively, the compounds of Formula 1 can be prepared via selective mono-protection of diol (9) with a suitable protecting group as illustrated in Scheme III.
- Treatment of (9) with tert-butyldimethylsilyl chloride in the presence of a suitable base such as imidazole in a solvent such as N,N-dimethylformamide followed by deprotection of the benzyl ether (as previously described) with catalytic palladium on carbon under a hydrogen atmosphere gives phenol (12). Cyclodehydration of (12) using standard Mitsunobu conditions, such as triphenylphosphine in the presence of diethylazodicarboxylate in a solvent such as toluene, provides the 2,3-dihydro-1-benzofuran-2-yl)methanol (13) protected as the silyl ether. Removal of the silyl ether in (13) using standard conditions such as tetrabutylamonnium fluoride in a solvent such as tetrahydrofuran then provides the alcohol (6) which can be converted to the compounds of the current invention as previously described (Scheme I).
- In lieu of a protecting group, diol (9) can be converted to the mono-tosylated derivative (12a) by treatment with p-toluenesulfonyl chloride and a suitable base such as pyridine to give the desired product, as illustrated in Scheme IV.
- Deprotection of the benzyl ether with catalytic palladium on carbon gives phenol (12b) followed by cyclodehydration with triphenylphosphine in the presence of diethylazodicarboxylate (as previously described) provides the aforementioned 2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (7).
- An additional route to the production of stereochemically enriched compounds of Formula 1 is illustrated in Scheme V.
- Palladium or transition metal catalyzed transposition of the double bond present in the previously described 2-allyl benzyl ether (8) using an appropriate catalyst such as dichlorobis(acetonitrile)palladium(II) in dichloromethane provides styrene derivative (14). Treatment of (14) with selenium dioxide in dioxane provides the carbonyl derivative (15). Reduction of the carbonyl to the allylic alcohol (16) can be accomplished by treatment with an appropriate reducing agent such as tetrabutylammonium borohydride in a solvent such as dichloromethane. The allylic alcohol (16) provides a suitable intermediate for the stereoselective introduction of oxygenation that permits transfer of this stereochemical integrity into the compounds of formula (1). The Sharpless Asymmetric Epoxidation (A-E) reaction is a general method for the stereoselective epoxidation of allylic alcohols and treatment of (16) under the appropriate conditions provides epoxy alcohol (17) with a high degree of stereoselectivity. The alcohol present in (17) can then be tosylated with p-toluenesulfonyl chloride as previously described to give derivative (18). Deprotection of the benzyl ether with concomitant regioselective opening of the epoxide maintaining the stereochemical information introduced by the Sharpless A-E is accomplished under the appropriate conditions by treatment of (18) with palladium on carbon under a hydrogen atmosphere in a solvent such as ethanol. Cyclodehydration using Mitsunobu conditions as previously described then affords 2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (7).
- The preparation of compounds of Formula 1 can also be accomplished in a stereospecific manner utilizing an optically pure commercially available intermediate. This method is described in detail in a copending U.S. provisional patent application entitled “Process For Stereospecific Synthesis of Dihydrobenzofuran Derivatives,” filed in the name of Dahui Zhou, et al. on the same date as the instant application. That application is incorporated herein by reference in its entirety for all purposes. As shown in Scheme VI, below, for example, reaction of benzyl(S)-(±)-glycidyl ether with the anion obtained by treatment of 2-bromoanisole with an alkyllithium such as n-butyllithium provides the resultant epoxy intermediate. Ring opening of the epoxide with a Lewis acid such as borontrifluoride diethyletherate provides diol (9a) with the primary alcohol protected as the benzyl ether. Deprotection of the methoxy group in 9a by treatment with 30% hydrogen bromide in acetic acid results in concomitant formation of intermediate vicinal acetoxy bromide (10a) followed by removal of the acetate with aqueous hydrogen chloride to provide diol (13a). Cyclodehydration with triphenylphosphine in the presence of diethylazodicarboxylate (as previously described) provides the desired 2-(bromomethyl)-2,3-dihydro-1-benzofuran (7b) that can be converted to the 7-bromo derivative (7c) by treatment with bromine in acetic acid.
- A further method for the synthesis of stereochemically enriched compounds of Formula 1 is described in detail in copending U.S. provisional patent application entitled “Asymmetric Synthesis of 2-(methylamino)dihydrobenzofurans,” filed in the name of Alexander Gontcharov, et al. on the same date as the instant application. That application is incorporated herein by reference in its entirety for all purposes. That method is illustrated in the preparation of the compound 2R-(−)-7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-2-aminomethylbenzofuran hydrochloride shown in Scheme VII.
- In certain embodiments, the invention relates to compositions comprising at least one compound of Formula 1, or a pharmaceutically acceptable salt thereof, and one or more pharmaceutically acceptable carriers, excipients, or diluents. Such compositions are prepared in accordance with acceptable pharmaceutical procedures, such as, for example, those described in Remingtons Pharmaceutical Sciences, 17th edition, ed. Alfonoso R. Gennaro, Mack Publishing Company, Easton, Pa. (1985), which is incorporated herein by reference in its entirety. Pharmaceutically acceptable carriers are those carriers that are compatible with the other ingredients in the formulation and are biologically acceptable.
- The compounds of Formula 1 can be administered orally or parenterally, neat, or in combination with conventional pharmaceutical carriers. Applicable solid carriers can include one or more substances that can also act as flavoring agents, lubricants, solubilizers, suspending agents, fillers, glidants, compression aids, binders, tablet-disintegrating agents, or encapsulating materials. In powders, the carrier is a finely divided solid that is in admixture with the finely divided active ingredient. In tablets, the active ingredient is mixed with a carrier having the necessary compression properties in suitable proportions and compacted in the shape and size desired. The powders and tablets preferably contain up to 99% of the active ingredient. Suitable solid carriers include, for example, calcium phosphate, magnesium stearate, talc, sugars, lactose, dextrin, starch, gelatin, cellulose, methyl cellulose, sodium carboxymethyl cellulose, polyvinylpyrrolidine, low melting waxes and ion exchange resins.
- Liquid carriers can be used in preparing solutions, suspensions, emulsions, syrups and elixirs. The active ingredient can be dissolved or suspended in a pharmaceutically acceptable liquid carrier such as water, an organic solvent, a mixture of both, or a pharmaceutically acceptable oil or fat. The liquid carrier can contain other suitable pharmaceutical additives such as, for example, solubilizers, emulsifiers, buffers, preservatives, sweeteners, flavoring agents, suspending agents, thickening agents, colors, viscosity regulators, stabilizers or osmo-regulators. Suitable examples of liquid carriers for oral and parenteral administration include water (particularly containing additives as above, e.g. cellulose derivatives, preferably sodium carboxymethyl cellulose solution), alcohols (including monohydric alcohols and polyhydric alcohols e.g. glycols) and their derivatives, and oils (e.g. fractionated coconut oil and arachis oil). For parenteral administration, the carrier can also be an oily ester such as ethyl oleate and isopropyl myristate. Sterile liquid carriers are used in sterile liquid form compositions for parenteral administration. The liquid carrier for pressurized compositions can be halogenated hydrocarbon or other pharmaceutically acceptable propellant.
- Liquid pharmaceutical compositions that are sterile solutions or suspensions can be administered by, for example, intramuscular, intraperitoneal or subcutaneous injection. Sterile solutions can also be administered intravenously. Compositions for oral administration can be in either liquid or solid form.
- The compounds of Formula 1 can be administered rectally or vaginally in the form of a conventional suppository. For administration by intranasal or intrabronchial inhalation or insufflation, the compounds of Formula 1 can be formulated into an aqueous or partially aqueous solution, which can then be utilized in the form of an aerosol. The compounds of Formula 1 can also be administered transdermally through the use of a transdermal patch containing the active compound and a carrier that is inert to the active compound, is non-toxic to the skin, and allows delivery of the agent for systemic absorption into the blood stream via the skin. The carrier can take any number of forms such as creams and ointments, pastes, gels, and occlusive devices. The creams and ointments can be viscous liquid or semisolid emulsions of either the oil-in-water or water-in-oil type. Pastes comprised of absorptive powders dispersed in petroleum or hydrophilic petroleum containing the active ingredient can also be suitable. A variety of occlusive devices can be used to release the active ingredient into the blood stream such as a semipermeable membrane covering a reservoir containing the active ingredient with or without a carrier, or a matrix containing the active ingredient. Other occlusive devices are known in the literature.
- Preferably the pharmaceutical composition is in unit dosage form, e.g. as tablets, capsules, powders, solutions, suspensions, emulsions, granules, or suppositories. In such form, the composition is sub-divided in unit dose containing appropriate quantities of the active ingredient; the unit dosage forms can be packaged compositions, for example, packeted powders, vials, ampoules, prefilled syringes or sachets containing liquids. The unit dosage form can be, for example, a capsule or tablet itself, or it can be the appropriate number of any such compositions in package form.
- The amount of compound of formula 1 provided to a patient will vary depending upon what is being administered, the purpose of the administration, such as prophylaxis or therapy, the state of the patient, the manner of administration, and the like. In therapeutic applications, compounds of formula 1 are provided to a patient suffering from a condition in an amount sufficient to treat or at least partially treat the symptoms of the condition and its complications. An amount adequate to accomplish this is a “therapeutically effective amount” as described previously herein. The dosage to be used in the treatment of a specific case must be subjectively determined by the attending physician. The variables involved include the specific condition and the size, age, and response pattern of the patient. The treatment of substance abuse follows the same method of subjective drug administration under the guidance of the attending physician. Generally, a starting dose is about 5 mg per day with gradual increase in the daily dose to about 150 mg per day, to provide the desired dosage level in the patient.
- In certain embodiments, the present invention is directed to prodrugs of compounds of Formula 1. The term “prodrug,” as used herein, means a compound that is convertible in vivo by metabolic means (e.g. by hydrolysis) to a compound of Formula 1. Various forms of prodrugs are known in the art such as those discussed in, for example, Bundgaard, (ed.), Design of Prodrugs, Elsevier (1985); Widder, et al. (ed.), Methods in Enzymology, vol. 4, Academic Press (1985); Krogsgaard-Larsen, et al., (ed). “Design and Application of Prodrugs, Textbook of Drug Design and Development, Chapter 5, 113-191 (1991), Bundgaard, et al., Journal of Drug Delivery Reviews, 8:1-38 (1992), Bundgaard, J. of Pharmaceutical Sciences, 77:285 et seq. (1988); and Higuchi and Stella (eds.) Prodrugs as Novel Drug Delivery Systems, American Chemical Society (1975), each of which is hereby incorporated by reference in its entirety.
- To a solution of 2-allyl-5-methoxyphenol (20.30 g, 0.124 mol) in DMF (500 mL) was added potassium carbonate (68.35 g, 0.495 mol) followed by benzyl bromide (23.26 g, 0.136 mol) and tetrabutylammonium iodide (4.57 g, 0.012 mol). The reaction mixture was allowed to stir at room temperature for 12 h. The reaction mixture was diluted with water (1000 mL) to dissolve any solids and extracted with diethyl ether (3×250 mL). The combined organic layers were washed with water (4×500 mL), saturated aqueous sodium chloride (400 mL), dried (magnesium sulfate) and the solvent removed in vacuo to give a crude oil. Purification by flash column chromatography (silica, ethyl acetate:hexanes 1:19) provided 28.44 g (90%) of 1-allyl-2-(benzyloxy)-4-methoxybenzene as a colorless oil. Rf=0.88 (silica, ethyl acetate:hexanes 1:9); Anal. calcd. for C17H18O2: C, 80.28; H, 7.13. Found: C, 82.43; H, 7.09.
- To a suspension of AD-mix-α (156.55 g) in water:tert-butyl alcohol (1:1, 800 mL) cooled to 0° C. was slowly added via an addition funnel a solution of 1-allyl-2-(benzyloxy)-4-methoxybenzene (28.44 g, 0.112 mol) in water:tert-butyl alcohol (1:1, 200 mL) and the reaction mixture was allowed to stir at 0° C. for 12 h. The reaction mixture was quenched by the addition of sodium sulfite. The reaction mixture was diluted with water (500 mL) and ethyl acetate (500 mL). The aqueous phase was separated and extracted with ethyl acetate (2×200 mL). The combined organic extracts were washed with saturated aqueous sodium chloride (400 mL), dried (magnesium sulfate) and the solvent was removed in vacuo to give a crude oil. Purification by flash column chromatography (silica, ethyl acetate:hexanes 3:2) gave 30.50 g (95%, 27% ee) of (±)-3-[2-(benzyloxy)-4-methoxyphenyl]propane-1,2-diol as a white crystalline solid. mp 82-86° C.; Anal. calcd. for C17H20O4: C, 70.81; H, 6.99. Found: C, 70.78; H, 7.16.
- To a solution of (±)-3-[2-(benzyloxy)-4-methoxyphenyl]propane-1,2-diol (30.50 g, 0.106 mol) in anhydrous pyridine (600 mL) cooled to 0° C. under a nitrogen atmosphere was added p-toluenesulfonyl chloride (22.18 g, 0.116 mol). The reaction mixture was allowed to stir at 0° C. for 12 h. The reaction mixture was quenched by the addition of water (10 mL). The reaction mixture was diluted with ethyl acetate (750 mL) and the organic layer was washed with aqueous hydrogen chloride (6 N, 4×400 mL), saturated aqueous sodium chloride (300 mL), dried (magnesium sulfate) and the solvent was removed in vacuo to give a crude oil. Purification by flash column chromatography (silica, ethyl acetate:hexanes 2:8) gave 42.84 g (91%) of (+)-3-[2-(benzyloxy)-4-methoxyphenyl]-2-hydroxypropyl 4-methylbenzenesulfonate as a colorless oil. Rf=0.28 (silica, ethyl acetate:hexanes 2:8); Anal. calcd. for C24H26O6S: C, 65.14; H, 5.92. Found: C, 64.59; H, 5.72.
- To a solution of (±)-3-[2-(benzyloxy)-4-methoxyphenyl]-2-hydroxypropyl 4-methylbenzenesulfonate (42.84 g, 0.097 mol) in ethanol (600 mL) was added palladium on carbon (10 wt. %, 5.81 g) and the reaction mixture was shaken under an H2 atmosphere (50 psi) for 6 h. The reaction mixture was filtered (celite) and the solvent removed in vacuo to provide 32.27 g (95%) of (±)-2-hydroxy-3-(2-hydroxy-4-methoxyphenyl)propyl 4-methylbenzenesulfonate as a colorless oil. Rf=0.34 (silica, ethyl acetate:hexanes 2:8); Anal. calcd. for C17H18O5S: C, 61.06; H, 5.43. Found: C, 60.70; H, 5.37.
- To a solution of (±)-2-hydroxy-3-(2-hydroxy-4-methoxyphenyl)propyl 4-methylbenzenesulfonate (32.27 g, 0.092 mol) in toluene (1000 mL) cooled to 0° C. was added triphenylphosphine (27.62 g, 0.105 mol) followed by dropwise addition of diethylazodicarboxylate (18.34 g, 0.105 mol) and the reaction mixture was allowed to stir at 0° C. for 15 min. The reaction mixture was quenched by the addition of water (10 mL). The solvent was removed in vacuo to give a crude solid. Purification by flash column chromatography (silica, ethyl acetate:hexanes 1:19) provided 22.53 g (74%) of (±)-(6-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a colorless oil. Rf=0.67 (silica, ethyl acetate:hexanes 1:9); Anal. calcd. for C17H18O5S: C, 61.06; H, 5.43. Found: C, 60.70; H, 5.37.
- To a solution of (±)-(5-methoxy-2,3-dihydro-1H-inden-2-yl)methyl 4-methylbenzenesulfonate (13.5 g, 40.5 mmol) in dichloromethane (250 mL) at −70° C. was added boron tribromide (27.0 mL, 1.0 N in dichloromethane) over 15 min. The reaction mixture was allowed to stir at −70° C. for an additional 15 minutes and allowed to warm to room temperature over 6 h. The reaction mixture was quenched with ice water and the product extracted with ethyl acetate (600 mL). The organic layer dried (magnesium sulfate), and the solvent removed in vacuo to provide a crude oil. Purification by flash column chromatography (silica, ethyl acetate:hexanes 1:4→1:1) afforded 10.15 g (79%) of (±)-(6-hydroxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a yellow solid. mp 107-110° C.; Anal. calcd. for C16H16O5S: C, 59.99; H, 5.03. Found: C, 59.21; H, 5.05.
- To a solution of (±)-(6-hydroxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (8.67 g, 27.2 mmol) in anhydrous dichloromethane (300 mL) at 0° C. was added diisopropylethylamine (4.22 g, 32.6 mmol) followed by trifluoromethanesulfonic anhydride (8.45 g, 29.9 mmol) and the reaction mixture was allowed to stir at 0° C. for 1 h. The reaction mixture was quenched with water (300 mL) and diluted with dichloromethane (400 mL), The combined organic layers were washed with saturated aqueous sodium chloride, dried (magnesium sulfate), and the solvent removed in vacuo to provide a crude solid. Purification by flash column chromatography (silica, ethyl acetate:hexanes 1:4→2:3) afforded 10.3 g (84%) of (±)-(6-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a tan solid. To a solution of (±)-(6-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (2.0 g, 4.43 mmol) in dioxane (50 mL) was added phenylboronic acid (1.08 g, 8.86 mmol), tetrakis(triphenylphosphine)palladium(0) (1.0 g, 0.884 mmol), and lithium chloride (0.787 g, 17.43 mmol) and the reaction mixture was heated at 90° C. for 12 h. The reaction mixture was cooled to room temperature and diluted with water (500 mL) and ethyl acetate (500 mL). The organic layer was separated and washed with water (200 mL), saturated aqueous sodium chloride (200 mL), dried (magnesium sulfate) and the solvent removed in vacuo to give a crude solid. Purification by flash column chromatography (silica, ethyl acetate:hexanes 1:9) provided 0.170 g (10%) of (±)-(6-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as an oil. 1H NMR (DMSO d6) δH 7.75 (d, 2H); 7.56 (d, 2H); 7.42 (m, 4H); 7.28 (t, 1H); 7.21 (d, 1H); 7.08 (d, 1H); 6.92 (s, 1H); 4.98 (m, 1H); 4.24 (dd, 1H); 4.18 (q, 1H); 3.29 (dd, 1H); 2.88 (dd, 1H); 2.46 (s, 3H).
- To a solution of 2-chloro-5-trifluoromethyl-phenol (10.00 g, 0.05 mol) in N,N-dimethylformamide (500 mL) was added potassium carbonate (28.12 g, 0.209 mol) followed by allyl bromide (7.38 g, 0.061 mol) and the reaction was allowed to stir at room temperature for 12 h. The reaction mixture was diluted with water (500 mL) to dissolve any solids and extracted with ethyl acetate (3×250 mL). The combined organic layers were washed with water (4×500 mL), saturated aqueous sodium chloride (400 mL), dried (magnesium sulfate) and the solvent removed in vacuo to give 2-(allyloxy)-1-chloro-4-(trifluoromethyl)benzene as a colorless oil. The oil was re-dissolved in mesitylene (35 mL) and heated at reflux for 12 h. Removal of the solvent in vacuo provided a crude oil. Purification by flash column chromatography (silica, ethyl acetate:hexanes 2:8) provided 9.6 g (96%) of 2-allyl-6-chloro-3-(trifluoromethyl)phenol as a amber oil. Rf=0.66 (silica, ethyl acetate:hexanes 1:4); 1H NMR (DMSO-d6) δH 9.84 (s, 1H); 7.43 (d, 2H); 7.16 (d, 1H); 5.84 (m, 1H); 4.95 (d, 1H); 4.89 (d, 1H); 3.46 (d, 2H).
- To a solution of 6-chloro-3-(trifluoromethyl)-2-vinylphenol (9.67 g, 0.043 mol) in dichloromethane 225 mL) was added 3-chloroperoxybenzoic acid (77%, 21.15 g, 0.122 mol). The reaction mixture was allowed to stir at room temperature for 8 h. The reaction mixture was washed with a 1:1 solution of 10% sodium sulfite:saturated sodium bicarbonate (2×200 mL). The solvent was removed in vacuo to give crude yellow oil. The oil was diluted with methanol (100 mL) and added to a solution of potassium carbonate (16.5 g, 0.119 mol) and methanol (825 mL) and the solution was allowed to stir at room temperature 2 h. The solvent was removed in vacuo. The residue was washed with water (1000 mL) and ethyl acetate (500 mL). The aqueous layer was acidified with 1 N aqueous hydrogen chloride and washed with ethyl acetate (500 mL). The combined organics were washed with water (500 mL), saturated aqueous sodium chloride (500 mL), dried (magnesium sulfate) and the solvent removed in vacuo to provide a crude solid. Purification by flash column chromatography (silica, ethyl acetate:hexanes 1:4) provided 6.71 g (70%) of (±)-(7-bromo-4-fluoro-2,3-dihydro-1-benzofuran-2-yl)methanol as a yellow oil. Rf=0.20 (silica, ethyl acetate:hexanes 1:4). Anal. calcd. for C10H8ClF3O2: C, 47.55; H, 3.19. Found C, 49.39; H, 3.57.
- To a solution of (±)-(7-bromo-4-fluoro-2,3-dihydro-1-benzofuran-2-yl)methanol (8.5 g, 0.034 mol) in pyridine (150 mL) cooled to 0° C. was added p-toluenesulfonyl chloride (7.06 g, 0.037 mol) and the reaction mixture was allowed to stir at 0° C. for 12 h. The reaction mixture was quenched by the addition of water (75 mL), diluted with diethyl ether (600 mL), washed with aqueous hydrogen chloride (1.0 M, 750 mL), water (200 mL), saturated aqueous sodium chloride (200 mL), dried (magnesium sulfate) and the solvent removed in vacuo to give a crude oil. Purification by flash column chromatography (silica, ethyl acetate:hexanes 2:8) afforded 7.0 g (51%) of (±)-[7-chloro-4-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid Rf=0.60 (silica, ethyl acetate:hexanes 3:7); mp 89-92° C.; Anal. calcd. for C17H14ClF3O4S C, 50.19; H, 3.47. Found C, 50.30; H, 3.35.
- Treatment of 2-allyl-6-cyclopentylphenol (6.97 g, 0.0344 mol) with 3-chloroperoxybenzoic acid (17.83 g, 0.1033 mol, 77%) and potassium carbonate (14.0 g, 0.1013 mol) generally according to the procedure described for Intermediate 9 afforded 4.1 g (54%) of (±)-(7-cyclopentyl-2,3-dihydro-1-benzofuran-2-yl)methanol as a yellow oil. Rf=0.58 (silica, ethyl acetate:hexanes 3:7); Anal. calcd. for C14H18O2: C, 77.03; H, 8.31. Found C, 76.5; H, 8.44.
- To a suspension of (7-cyclopentyl-2,3-dihydro-1-benzofuran-2-yl)methylamine (2.4 g, 9.46 mmol) in tetrahydrofuran (100 mL) cooled to 0° C. was added diisopropylethylamine (2.14 g, 16.58 mmol) followed by benzyl chloroformate (20.08 g, 12.19 mmol) and the reaction mixture was allowed to stir for 15 min. The reaction mixture was quenched with water (100 mL). The aqueous layer was extracted with ethyl acetate (2×200 mL) and the combined organic extracts were washed with saturated aqueous sodium chloride (100 mL), dried (magnesium sulfate) and the solvent removed in vacuo. Purification by flash column chromatography (silica, ethyl acetate:hexanes 1:9) provided 2.52 g (76%) of (±)-benzyl (7-cyclopentyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate as a yellow oil. Rf=0.21 (silica, ethyl acetate:hexanes 2:8); Anal. calcd. for C22H25NO3: C, 75.19; H, 7.17; N, 3.99. Found C, 74.74; H, 7.02; N, 3.85. Chiral HPLC separation of (±)-benzyl (7-cyclopentyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralcel OJ, ethanol:hexane 1:1) provided two fractions. Fraction 1 (Rt 9.678 min, Chiralcel OJ, ethanol:hexane 1:1); Fraction 2 (Rt=12.824 min, Chiralcel OJ, ethanol:hexane 1:1).
- To a solution of 4-chloro-2-cyclohexylphenol (23.00 g, 0.109 mol) in N,N-dimethylformamide (600 mL) was added sodium hydride (4.56 g, 0.114 mol, 60 wt. %) followed by allyl bromide (14.51 g, 0.120 mol) and the reaction mixture was allowed to stir at room temperature for 5 h. The solvent was removed in vacuo and the residue diluted with water (500 mL) and extracted with ethyl acetate (2×300 mL). The combined organic layers were washed with water (500 mL), saturated aqueous sodium chloride (500 mL), dried (magnesium sulfate), and the solvent removed in vacuo to give 29.0 g of 1-(allyloxy)-4-chloro-2-cyclohexylbenzene as a brown oil. Treatment of the allyl ether in refluxing mesitylene generally according to the procedure described for Intermediate 8 provided 18.0 g of 2-allyl-4-chloro-6-cyclohexylphenol. Treatment of the phenol (6.5 g, 0.026 mol) with 3-chloroperoxybenzoic acid (9.88 g, 0.045 mol, 77%) followed by potassium carbonate (10.00 g, 0.072 mol) generally according to the procedure described for Intermediate 9 afforded 4.6 g (67%) of (±)-(5-chloro-7-cyclohexyl-2,3-dihydro-1-benzofuran-2-yl)methanol as a white solid. mp 67-69° C.; Anal. calcd. for C15H19ClO2: C, 67.54; H, 7.18. Found: C, 67.81; H, 6.98.
- Treatment of (±)-(5-chloro-7-cyclohexyl-2,3-dihydro-1-benzofuran-2-yl)methylamine (2.20 g, 7.28 mmol) with diisopropylethylamine (2.94 g, 22.7 mmol) and methyl chloroformate (1.08 g, 11.4 mmol) generally according to the procedure described for Intermediate 12 provided 2.30 g (93%) of (±)-methyl (5-chloro-7-cyclohexyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate as a white solid. mp 100-103° C.; Anal. calcd. for C17H22ClNO3: C, 63.06; H, 6.85; N, 4.33. Found: C, 63.16; H, 6.3; N, 4.25.
- Treatment of 2-allyl-6-benzylphenol (12.11 g, 0.054 mol) with potassium carbonate (30.00 g, 0.217 mol), benzyl bromide (10.67 g, 0.062 mol), and tetrabutylammonium iodide (2.01 g, 0.005 mol) generally according to the procedure described for Intermediate 1 provided 1-allyl-3-benzyl-2-(benzyloxy)benzene. Treatment of 1-allyl-3-benzyl-2-(benzyloxy)benzene (16.35 g, 0.052 mol) with AD-mix-ax (76.02 g) generally according to the procedure described for Intermediate 2 gave 9.82 (54%, 25% ee) of (±)-3-[3-benzyl-2-(benzyloxy)phenyl]propane-1,2-diol as a white crystalline solid. mp 55-58° C.; Anal. calcd. for C23H24O3: C, 79.28; H, 6.94. Found: C, 78.89; H, 6.96.
- Treatment of (±)-3-[3-benzyl-2-(benzyloxy)phenyl]propane-1,2-diol (9.76 g, 0.028 mol) with p-toluenesulfonyl chloride (5.87 g, 0.031 mol) in pyridine (250 mL) generally according to the procedure described for Intermediate 3 gave 9.88 g (70%) of (±)-3-[3-benzyl-2-(benzyloxy)phenyl]-2-hydroxypropyl 4-methylbenzenesulfonate as a colorless oil. Anal. calcd. for C30H30O5S: C, 71.69; H, 6.02. Found: C, 70.41; H, 6.14.
- Treatment of (±)-3-[3-benzyl-2-(benzyloxy)phenyl]-2-hydroxypropyl 4-methylbenzenesulfonate (9.72 g, 0.019 mol) with palladium on carbon (0.97 g, 10 wt. %) generally according to the procedure described for Intermediate 4 provided 7.34 g (92%) of (±)-3-(3-benzyl-2-hydroxyphenyl)-2-hydroxypropyl 4-methylbenzenesulfonate as a colorless oil. Anal. calcd. for C23H24O5S: C, 66.97; H, 5.86. Found: C, 66.11; H, 5.95.
- Treatment of (±)-3-(3-benzyl-2-hydroxyphenyl)-2-hydroxypropyl 4-methylbenzenesulfonate (7.29 g, 0.018 mol) with triphenylphosphine (5.10 g, 0.019 mol) and diethylazodicarboxylate (3.39 g, 0.019 mol) generally according to the procedure described for Intermediate 5 afforded 6.57 g (94%) of (i)-(7-benzyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a colorless oil. Anal. calcd. for C23H22O4S: C, 70.03; H, 5.62. Found: C, 68.97; H, 5.42.
- Treatment of (±)-1-(7-benzyl-2,3-dihydro-1-benzofuran-2-yl)methanamine (2.0 g, 8.36 mmol) with diisopropylethylamine (1.62 g, 12.56 mmol) and benzyl chloroformate (1.64 g, 9.61 mmol) generally according to the procedure described for Intermediate 12 provided 2.96 g (95%) of (±)-benzyl (7-benzyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate as a colorless oil. Anal. calcd. for C24H23NO3: C, 77.19; H, 6.21; N, 3.75. Found C, 75.58; H, 6.42; N, 3.55. Chiral HPLC separation of (±)-benzyl (7-benzyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralcel OD, methanol) provided two fractions. Fraction 1 (Rt=12.085 min, Chiralcel OD, methanol); Fraction 2 (Rt=17.945 min, Chiralcel OD, methanol).
- Treatment of 2-allyl-6-isopropylphenol (8.81 g, 0.05 mmol) with 3-chloroperoxybenzoic acid (22.43 g, 0.13 mol, 77%)) followed by potassium carbonate (13.82 g, 0.1 mol) generally according to the procedure described for Intermediate 9 provided (±)-(7-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methanol. Treatment of (±)-(7-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methanol (3.45 g, 0.018 mol) with p-toluenesulfonyl chloride (3.92 g, 0.021 mol) generally according to the procedure described for Intermediate 10 afforded 4.91 g (79%) (±)-(7-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a colorless oil. Anal. calcd. for C19H22O4S C, 65.87; H, 6.4. Found C, 65.63; H, 6.32.
- Treatment of (±)-(7-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methylamine (2.2 g, 9.66 mmol) with diisopropylethylamine (3.12 g, 24.15 mmol) and benzyl chloroformate (1.81 g, 10.63 mmol) generally according to the procedure described for Intermediate 12 gave 1.2 g (59%) of (±)-benzyl (7-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate as a colorless oil. Anal. calcd. for C20H23NO3: C, 73.82; H, 7.12; N, 4.3. Found C, 73.32; H, 7.33; N, 4.15. Chiral HPLC separation of (±)-benzyl (7-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralcel OJ, ethanol) provided two fractions. Fraction 1 (Rt=9.319 min, Chiralcel OJ, ethanol); Fraction 2 (Rt=11.868 min, Chiralcel OJ, ethanol).
- Treatment of 4-chloro-2-isopropyl-5-methylphenol (10.00 g, 0.054 mol) with potassium carbonate (29.94 g, 0.217 mol) and allyl bromide (7.86 g, 0.065 mol), followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 provided 8.92 g (73%) of 2-allyl-4-chloro-6-isopropyl-3-methylphenol as a colorless oil. Rf=0.85 (silica, ethyl acetate:hexanes 1:9); Anal. calcd. for C13H17ClOC: C, 69.48; H, 7.62. Found: C, 69.87; H, 7.43.
- Treatment of 2-allyl-4-chloro-6-isopropyl-3-methylphenol (8.88 g, 0.04 mmol) with 3-chloroperoxybenzoic acid (13.63 g, 0.079 mol, 77%)) followed by potassium carbonate (10.92 g, 0.079 mol) generally according to the procedure described for Intermediate 9 provided (±)-(5-chloro-7-isopropyl-4-methyl-2,3-dihydro-1-benzofuran-2-yl)methanol. Treatment of (±)-(5-chloro-7-isopropyl-4-methyl-2,3-dihydro-1-benzofuran-2-yl)methanol (5.95 g, 0.025 mol) with p-toluenesulfonyl chloride (5.66 g, 0.03 mol) generally according to the procedure described for Intermediate 10 afforded 6.71 g (69%) (±)-(5-chloro-7-isopropyl-4-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. mp 103-105° C.; Anal. calcd. for C20H23ClO4S C, 60.83; H, 5.87. Found C, 60.67; H, 5.88.
- Treatment of (±)-1-(5-chloro-7-isopropyl-4-methyl-2,3-dihydro-1-benzofuran-2-yl)methanamine (3.41 g, 12.3 mmol) with diisopropylethylamine (1.99 g, 14.2 mmol) and benzyl chloroformate (2.42 g, 14.2 mmol) generally according to the procedure described for Intermediate 12 gave 3.74 g (81%) of (±)-benzyl (5-chloro-7-isopropyl-4-methyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate as a colorless oil. Anal. calcd. for C21H24ClNO3: C, 67.46; H, 6.47; N, 3.75. Found C, 67.01; H, 6.52; N, 3.56. Chiral HPLC separation of (±)-benzyl (5-chloro-7-isopropyl-4-methyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralpak AD, ethanol) provided two fractions.
- Fraction 1 obtained as a white solid from the separation of (±)-benzyl (5-chloro-7-isopropyl-4-methyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Rt=4.132 min, Chiralpak AD, ethanol). [α]D 25=−38.52 (c 10.0 in methanol); mp 59-62° C.; Anal. calcd. for C21H24ClNO3: C, 67.46; H, 6.47; N, 3.75. Found C, 67.26; H, 6.41; N, 3.36.
- Fraction 2 obtained as a white solid from the separation of (±)-benzyl (5-chloro-7-isopropyl-4-methyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Rt=5.393 min, Chiralpak AD, ethanol). [α]D 25=+37.84 (c 10.0 in methanol); mp 59-62° C.; Anal. calcd. for C21H24ClNO3: C, 67.46; H, 6.47; N, 3.75. Found C, 67.2; H, 6.49; N, 3.58.
- Treatment of 2-allyl-6-tert-butylphenol (12.5 g, 0.066 mol) with potassium carbonate (27.24 g, 0.197 mol), benzyl bromide (11.80 g, 0.069 mol), and tetrabutylammonium iodide (2.43 g, 6.57 mmol) generally according to the procedure described for Intermediate 1 provided 16.2 g (88%) of 1-allyl-2-(benzyloxy)-3-tert-butylbenzene as a colorless oil. Anal. calcd. for C20H24O: C, 85.67; H, 8.63. Found: C, 86.27; H, 8.77.
- To a suspension of potassium ferricyanide (57.00 g, 0.173 mol), potassium carbonate (24.00 g, 0.174 mol), hydroquinine anthraquinone-1,4-diyl diether (0.495 g, 0.578 mmol), and potassium osmate dihydrate (0.043 g, 0.117 mmol) in water:tert-butyl alcohol (1:1, 600 mL) cooled to 0° C. was slowly added via an addition funnel a solution of 1-allyl-2-(benzyloxy)-3-tert-butylbenzene (16.2 g, 0.058 mol) in tert-butyl alcohol (50 mL) and the reaction mixture was allowed to stir at 0° C. for 12 h. The reaction mixture was quenched by the addition of sodium sulfite. The reaction mixture was diluted with water (500 mL) and ethyl acetate (500 mL). The aqueous phase was separated and extracted with ethyl acetate (2×200 mL). The combined organic extracts were washed with saturated aqueous sodium chloride (400 mL), dried (magnesium sulfate) and the solvent was removed in vacuo to give a crude oil. Purification by flash column chromatography (silica, ethyl acetate:hexanes 3:2) gave 16.75 g (92%, 32% ee) of (±)-3-[2-(benzyloxy)-3-tert-butylphenyl]propane-1,2-diol as a white solid. mp 79-81° C.; Anal. calcd. for C20H26O3: C, 76.4; H, 8.33. Found: C, 76.39; H, 8.22.
- Treatment of (±)-3-[2-(benzyloxy)-3-tert-butylphenyl]propane-1,2-diol (16.50 g, 0.053 mol) with p-toluenesulfonyl chloride (10.51 g, 0.055 mol) in pyridine (400 mL) generally according to the procedure described for Intermediate 3 gave 42.84 g (91%) of (±)-3-[2-(benzyloxy)-4-methoxyphen yl]-2-hydroxypropyl 4-methylbenzenesulfonate. Treatment of the tosylate with palladium on carbon (2.4 g, 10 wt. %) generally according to the procedure described for Intermediate 4 provided 14.71 g (74%) of (±)-3-(3-tert-butyl-2-hydroxyphenyl)-2-hydroxypropyl 4-methylbenzenesulfonate as a white solid. mp 98-101° C.; Anal. calcd. for C20H26O5S: C, 63.47; H, 6.92. Found: C, 63.24; H, 6.99.
- Treatment of (±)-3-(3-tert-butyl-2-hydroxyphenyl)-2-hydroxypropyl 4-methylbenzenesulfonate (14.66 g, 0.039 mol) with triphenylphosphine (11.18 g, 0.043 mol) and diethylazodicarboxylate (7.42 g, 0.043 mol) generally according to the procedure described for Intermediate 5 afforded 12.48 g (89%) of (±)-(7-tert-butyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a colorless oil. Anal. calcd. for C20H24O4S: C, 66.64; H, 6.71. Found: C, 66.28; H, 6.95.
- Treatment of (±)-1-(7-tert-butyl-2,3-dihydro-1-benzofuran-2-yl)methanamine (3.25 g, 13.4 mmol) with diisopropylethylamine (4.34 g, 33.6 mmol) and benzyl chloroformate (2.64 g, 15.5 mmol) generally according to the procedure described for Intermediate 12 gave 4.37 g (96%) of (±)-benzyl (7-tert-butyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate as a white solid. mp 73-76° C.; Anal. Calcd. for C21H25NO3: C, 74.31; H, 7.42; N, 4.13. Found C, 74.95; H, 7.51; N, 4.18. Chiral HPLC separation of (+)-benzyl (7-tert-butyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralcel OJ, ethanol) provided two fractions. Fraction 1 (Rt=9.100 min, Chiralcel OJ, ethanol); Fraction 2 (Rt=14.428 min, Chiralcel OJ, ethanol).
- Treatment of 2-tert-butyl-4-chlorophenol (12.73 g, 0.070 mol) with allyl bromide (10.01 g, 0.083 mol) and potassium carbonate (38.11 g, 0.276 mol) followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 gave 2-allyl-6-tert-butyl-4-chlorophenol. Treatment of the phenol with 3-chloroperoxybenzoic acid (35.90 g, 0.146 mol, 77%) followed by potassium carbonate (28.18 g, 0.204 mol) generally according to the procedure described for Intermediate 9 provided (±)-(7-tert-butyl-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methanol. Treatment of the alcohol with p-toluenesulfonyl chloride (10.27 g, 0.054 mol) generally according to the procedure described for Intermediate 10 afforded 13.84 g (51%) (±)-(7-tert-butyl-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. mp 74-77° C.; Anal. calcd. for C20H23ClO4S C, 60.83; H, 5.87. Found C, 60.79; H, 5.80.
- Treatment of (±)-1-(7-tert-butyl-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methanamine (1.80 g, 6.52 mmol) with diisopropylethylamine (2.11 g, 16.29 mmol) and benzyl chloroformate (1.28 g, 7.49 mmol) generally according to the procedure described for Intermediate 12 gave 2.33 g (95%) of (±)-benzyl (7-tert-butyl-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate as a colorless oil. Anal. calcd. for C21H24ClNO3: C, 67.46; H, 6.47; N, 3.75. Found C, 67.27; H, 6.62; N, 3.66. Chiral HPLC separation of (±)-benzyl (7-tert-butyl-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralpak AD, hexane:isopropanol 9:1) provided two fractions. Fraction 1 (Rt=5.642 min, Chiralpak AD, hexane:isopropanol 9:1); Fraction 2 (Rt=6.494 min, Chiralpak AD, hexane:isopropanol 9:1).
- Treatment of (±)-(7-tert-butyl-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methylamine (1.03 g, 3.8 mmol) with diisopropylethylamine (0.735 g, 5.7 mmol) and benzyl chloroformate (0.711 g, 4.2 mmol) generally according to the procedure described for Intermediate 12 gave 1.2 g (59%) of (±)-benzyl (7-tert-butyl-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate as a colorless oil. Rf=0.51 (silica, ethyl acetate:hexanes 2:8); Anal. calcd. for C22H27NO4: C, 71.52; H, 7.37; N, 3.79. Found C, 71.2; H, 7.44; N, 3.77.
- To a solution of dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II) dichloromethane adduct (0.92 g, 1.12 mmol) and 1,1′-bis(diphenylphosphino) ferrocene (0.62 g, 1.12 mmol) in dioxane (275 mL) was added 2-isopropylphenyl trifluoromethanesulfonate (10.0 g, 37.5 mmol), bis(pinacolato)diboron (10.48 g, 41.26 mmol) and potassium acetate (10.96 g, 55.83 mmol) and the reaction mixture was heated to 90° C. and allowed to stir for 36 h. The reaction mixture was cooled to room temperature and diluted with water (300 mL) and extracted with diethyl ether (2×300 mL). The combined organic layers were washed with water (2×200 mL) and saturated aqueous sodium chloride (200 mL), were dried (magnesium sulfate), and the solvent was removed in vacuo to provide a crude oil. Purification by flash column chromatography (silica, ethyl acetate:hexane 1:1) provided 3.9 g (43%) of 2-(2-isopropylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane as a pale yellow oil. 1H NR (DMSO-d6) δH 7.57 (d, 1H); 7.38 (t, 1H); 7.30 (d, 1H); 7.13 (t, 1H); 3.57 (m, 1H); 1.27 (s, 12H); 1.14 (d, 6H).
- Treatment of 2-allyl-5-bromophenol (27.25 g, 0.128 mmol), with 3-chloroperoxybenzoic acid (66.20 g, 0.384 mol, 77%)) followed by potassium carbonate (44.18 g, 0.319 mol) generally according to the procedure described for Intermediate 9 provided (±)-(4-bromo-2,3-dihydro-1-benzofuran-2-yl)methanol as a yellow oil. Treatment of the oil with p-toluenesulfonyl chloride (15.65 g, 0.082 mol) generally according to the procedure described for Intermediate 10 afforded 24.7 g (78%) of (±)-(4-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. mp 90-91° C.; Anal. calcd. for C16H15BrO4S: C, 50.14; H, 3.94. Found: C, 50.09; H, 3.82.
- To a solution of (±)-(4-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (2.05 g, 5.21 mmol) and phenylboronic acid (0.952 g, 7.81 mmol) in dioxane (50 mL) heated to 100° C. was added dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.205 g, 0.261 mmol) and potassium carbonate (1.80 g, 13.04 mmol) and the reaction mixture was allowed to stir at 100° C. for 12 h. The reaction mixture was cooled to room temperature, diluted with diethyl ether (250 mL), and filtered (celite). The organic layer was washed with water (2×100 mL) and saturated aqueous sodium chloride (100 mL), was dried (magnesium sulfate), and the solvent was removed in vacuo to provide a crude oil. Purification by flash column chromatography (silica, ethyl acetate:hexanes 1:9) provided 1.45 g (73%) of (±)-(4-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a clear oil. Rf=0.34 (silica, ethyl acetate:hexanes 1:4); Anal. calcd. for C22H20O4S: C, 69.45; H, 5.30. Found: C, 69.17; H, 5.30.
- Treatment of (±)-(4-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine (0.622 g, 2.38 mmol) with diisopropylethylamine (0.447 g, 3.57 mmol) and benzyl chloroformate (0.462 g, 2.62 mmol) generally according to the procedure described for Intermediate 12 provided 0.601 g (70%) of (±)-benzyl (4-phenyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate as a white solid. mp 132-134° C.; Anal. calcd. for C23H21NO3: C, 76.86H, 5.89; N, 3.90. Found: C, 75.98H, 5.80; N, 3.72. Chiral HPLC separation of (±)-benzyl (4-phenyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralcel OD, ethanol:water 15:85) provided two fractions. Fraction 1 (Rt=6.651 min Chiralcel OD, ethanol:water 1:3); Fraction 2 (Rt=7.395 min, Chiralcel OD, ethanol:water 1:3).
- Treatment of (±)-(4-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (2.0 g, 5.21 mmol), 2-methylphenyl boronic acid (1.06 g, 7.82 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.205 g, 0.261 mmol), and potassium carbonate (1.80 g, 13.04 mmol) generally according to the procedure described for Intermediate 37 provided 1.41 g (69%) of (±)-[4-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a yellow oil. Rf=0.42 (silica, ethyl acetate:hexanes 1:4); Anal. calcd. for C23H22O4S: C, 70.03; H, 5.62. Found: C, 69.70; H, 5.45.
- Treatment of (±)-1-[4-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (0.533 g, 1.94 mmol) with diisopropylethylamine (0.375 g, 2.90 mmol) and benzyl chloroformate (0.363 g, 2.13 mmol) generally according to the procedure described for Intermediate 12 provided 0.594 g (82%) of (±)-benzyl[4-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate as colorless oil. Rf=0.42 (silica, ethyl acetate:hexanes 1:4); Anal. calcd. for C24H23NO3: C, 77.19H, 6.21; N, 3.75. Found: C, 76.0H, 6.01; N, 3.55. Chiral HPLC separation of (±)-benzyl[4-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OD, methanol) provided two fractions. Fraction 1 (Rt=5.952 min Chiralcel OD, methanol); Fraction 2 (Rt=7.345 min, Chiralcel OD, methanol).
- Treatment of guaiacol (25.00 g, 0.201 mol) with allyl bromide (29.24 g, 0.242 mol) and potassium carbonate (83.50 g, 0.604 mol) followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 afforded 2-allyl-6-methoxyphenol as a brown oil. Treatment of the phenol with potassium carbonate (83.5 g, 0.604 mol), benzyl bromide (36.19 g, 0.212 mol), and tetrabutylammonium iodide (7.42 g, 0.020 mol) generally according to the procedure described for Intermediate 1 gave 23.61 g (45%) of 1-allyl-2-(benzyloxy)-3-methoxybenzene as a pale yellow oil. Rf=0.71 (silica, ethyl acetate:hexanes 1:9); Anal. calcd. for C17H18O2: C, 80.28; H, 7.13. Found: C, 79.09; H, 6.93.
- Treatment of (4-methoxy-1,3-benzodioxol-2-yl)methanol (23.61 g, 0.093 mol) with AD-mix-α (129.97 g) generally according to the procedure described for Intermediate 2 provided 26.49 g (99%, 34% ee) of (+)-3-[2-(benzyloxy)-3-methoxyphenyl]propane-1,2-diol as a colorless oil. Rf=0.63 (silica, ethyl acetate:hexanes 3:2); Anal. calcd. for C17H20O4: C, 70.81; H, 6.99. Found: C, 69.33; H, 7.12.
- To a solution of (±)-3-[2-(benzyloxy)-3-methoxyphenyl]propane-1,2-diol (50.23 g, 0.174 mol) in N,N-dimethylformamide (600 mL) was added tert-butyldimethylsilyl chloride (28.88 g, 0.192 mol) followed by triethylamine (22.03 g, 0.218 mol) and 4-(dimethylamino)pyridine (2.12 g, 0.017 mol) and the reaction mixture was allowed to stir at room temperature for 6 h. The reaction mixture was quenched by the addition of water (1000 mL) and was extracted with ethyl acetate (3×300 mL). The combined organic extracts were washed with water (4×300 mL), aqueous hydrogen chloride (1.0 N, 400 mL), saturated aqueous sodium chloride (300 mL), dried (magnesium sulfate) and the solvent was removed in vacuo to give a crude oil. Purification by flash column chromatography (silica, ethyl acetate:hexanes 3:7) provided 58.14 g (83%) of (+)-1-[2-(benzyloxy)-3-methoxyphenyl]-3-{[tert-butyl(dimethyl)silyl]oxy}propan-2-ol as a colorless oil. Rf=0.48 (silica, ethyl acetate:hexanes 3:7); Anal. calcd. for C23H34O4Si: C, 68.62; H, 8.51. Found: C, 69.20; H, 8.91.
- Treatment of (±)-1-[2-(benzyloxy)-3-methoxyphenyl]-3-{[tert-butyl(dimethyl)silyl]oxy}propan-2-ol (58.14 g, 0.144 mol) with palladium on carbon (5.81 g, 10 wt. %) generally according to the procedure described for Intermediate 4 provided (+)-2-(3-{[tert-butyl(dimethyl)silyl]oxy}-2-hydroxypropyl)-6-methoxyphenol as a crude oil. Treatment of the phenol with triphenylphosphine (44.52 g, 0.170 mol) and diethylazodicarboxylate (29.56 g, 0.170 mol) generally according to the procedure described for Intermediate 5 gave 34.12 g (80%) of (±)-tert-butyl[(7-methoxy-2,3-dihydro-1-benzofuran-2-yl)methoxy]dimethylsilane as a colorless oil. Rf=0.67 (silica, ethyl acetate:hexanes 1:9); Anal. calcd. for C16H26O3Si: C, 65.26; H, 8.90. Found: C, 64.26; H, 9.24.
- To a solution of (±)-tert-butyl[(7-methoxy-2,3-dihydro-1-benzofuran-2-yl)methoxy]dimethylsilane (34.12 g; 0.116 mol) in tetrahydrofuran (700 mL) cooled to 0° C. was added via an addition funnel tetrabutylammonium fluoride (140 mL, 1.0 M solution in tetrahydrofuran) and the reaction mixture was allowed to stir at room temperature for 6 h. The reaction was diluted with water (500 mL) and extracted with ethyl acetate (2×300 mL). The combined organic extracts were washed with saturated aqueous sodium chloride (400 mL), dried (magnesium sulfate) and the solvent was removed in vacuo to give (O)-(7-methoxy-2,3-dihydro-1-benzofuran-2-yl)methanol, a crude oil. The alcohol was dissolved in dichloromethane (700 mL) and p-toluenesulfonyl chloride (33.14 g, 0.174 mol) was added followed by triethylamine (21.11 g, 0.209 mol) and then 4-(dimethylamino)pyridine (2.12 g, 0.017 mol). The reaction mixture was allowed to stir at 50° C. for 12 h. The reaction mixture was cooled to room temperature and the solvent was removed in vacuo to give a crude solid. Purification by flash column chromatography (silica, ethyl acetate:hexanes 3:7) provided 26.45 g (68%) of (±)-(7-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white crystalline solid. Rf=0.38 (silica, ethyl acetate:hexanes 3:7); mp 98-103° C.; Anal. calcd. for C17H18O5S: C, 61.06; H, 5.43. Found: C, 60.80; H, 5.37.
- To (±)-(7-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (10.00 g, 0.030 mol) was added hydrogen bromide (20 mL, 30 wt. % in acetic acid) and the resulting solution was heated to 40° C. The reaction mixture was allowed to stir at 40° C. for 4 h. The reaction mixture was cooled to room temperature and was diluted with water (250 mL) and extracted with diethyl ether (3×200 mL). The combined organic extracts were washed with saturated sodium bicarbonate (3×300 mL), water (200 mL), and saturated aqueous sodium chloride (200 mL), were dried (magnesium sulfate), and the solvent was removed in vacuo to provide a crude oil. Purification by flash column chromatography (silica, ethyl acetate:hexanes 1:3) provided 7.34 g (77%) of (±)-(7-hydroxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as white solid. Rf=0.31 (silica, ethyl acetate:hexanes 1:3); mp 122-125° C.; Anal. calcd. for C16H16O5S: C, 59.99; H, 5.03. Found: C, 59.8; H, 4.73.
- Treatment of (±)-(7-hydroxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.00 g, 3.12 mmol) with diisopropylethylamine (0.44 g, 3.43 mmol) and trifluoromethanesulfonic anhydride (0.92 g, 3.28 mmol) generally according to the procedure described for Intermediate 7 gave 1.05 g (74%) of (±)-(7-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. Rf=0.45 (silica, ethyl acetate:hexanes 1:3); mp 60-63° C.; Anal. calcd. for C17H15F3O7S2: C, 45.13; H, 3.34. Found: C, 44.85; H, 3.04.
- Treatment of 2-allyl-6-bromophenol (61.4 g 0.288 mol) with 3-chloroperoxybenzoic acid (77%, 149.18 g, 0.864 mol)) followed by potassium carbonate (99.56 g, 0.72 mol) generally according to the procedure described for Intermediate 9 provided 49.00 g (78%) (86%) of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methanol as an amber oil. Rf=0.66 (silica, ethyl acetate:hexanes 1:9) 1H NMR (DMSO-d6) 8H 7.23 (dd, 1H); 7.14 (dd, 1H); 6.71 (t, 1H); (5.01 m, 1H); 4.85 (m, 1H); 4.99 (m, 2H); 3.36 (d, 2H).
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methanol (49.0 g, 0.214 mol) with p-toluenesulfonyl chloride (44.9 g, 0.235 mol) generally according to the procedure described for Intermediate 10 gave 66.00 g (80%) (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. Rf=0.44 (silica, ethyl acetate:hexanes 1:4); mp 120-122° C.; Anal. calcd. for C16H15BrO4S: C, 50.14; H, 3.94. Found: C, 48.47; H, 4.03.
- To a solution of (±)-(7-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.0 g, 2.21 mmol) and 3,5-bis(trifluoromethyl)phenylboronic acid (0.86 g, 3.32 mmol) in dioxane (25 mL) heated to 90° C. was added tetrakis(triphenylphosphine)palladium(0) (0.26 g, 0.22 mmol) and potassium phosphate (0.94 g, 4.42 mmol). The reaction mixture was allowed to stir at 90° C. for 12 h. The reaction mixture was allowed to cool and was diluted with diethyl ether (100 mL), filtered (celite), and the solvent was removed in vacuo to provide a crude solid. Purification by flash column chromatography (silica, ethylacetate:hexanes 1:9) afforded 0.75 g (66%) of (±)-{7-[3,5-bis(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate as a white solid. Rf=0.49 (silica, ethyl acetate:hexanes 1:3); mp 100-105° C.; Anal. calcd. for C24H18F6O4S2: C, 55.82; H, 3.51. Found: C, 55.75; H, 3.35.
- Treatment of (±)-(7-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.5 g, 3.32 mmol) with 3-chloro-4-fluorophenylboronic acid (0.87 g, 4.97 mmol), tetrakis(triphenylphosphine)palladium(0) (0.38 g, 0.33 mmol), and potassium phosphate (1.41 g, 6.64 mmol) generally according to the procedure described for Intermediate 50 provided 0.68 g (48%) of (±)-[7-(3-chloro-4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Rf=0.43 (silica, ethyl acetate:hexanes 1:3); mp 104-108° C.; Anal. calcd. for C22H18ClFO4S2: C, 61.04; H, 4.19. Found: C, 60.74; H, 4.13.
- Treatment of (±)-(7-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.5 g, 3.32 mmol) with phenylboronic acid (0.95 g, 4.97 mmol), tetrakis(triphenylphosphine)palladium(0) (0.38 g, 0.33 mmol), and potassium phosphate (1.41 g, 6.64 mmol) generally according to the procedure described for Intermediate 50 provided 0.40 g (32%) of (±)-(7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. Rf=0.48 (silica, ethyl acetate:hexanes 1:3); Anal. calcd. for C22H20O4S-0.2H2O: C, 68.8; H, 5.35. Found: C, 68.78; H, 5.08.
- Treatment of (±)-benzyl (7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine (1.5 g, 1.43 mmol) with diisopropylethylamine (0.277 g, 2.14 mmol) followed by benzyl chloroformate (0.268 g, 1.572 mmol) generally according to the procedure described for Intermediate 12 provided 1.64 (79%) of (±)-benzyl[7-phenyl-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate as a clear oil. Rf=0.68 (silica, ethyl acetate:hexanes 1:2); Anal. calcd. for C23H21NO3: C, 76.86; H, 5.89; N, 3.90. Found: C, 75.10H, 5.71; N, 3.90. Chiral HPLC separation of (±)-benzyl[7-phenyl-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralpak AD, ethanol:hexane 1:1) provided two fractions. Fraction 1 (Rt=10.746 min, Chiralpak AD, ethanol:hexane 1:1); Fraction 2 (Rt=13.433 min, Chiralpak AD ethanol:hexane 1:1).
- Treatment of (±)-(7-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.5 g, 3.32 mmol) with 2-naphthaleneboronic acid (0.86 g, 4.97 mmol), tetrakis(triphenylphosphine)palladium(0) (0.38 g, 0.33 mmol), and potassium phosphate (1.41 g, 6.64 mmol) generally according to the procedure described for Intermediate 50 provided 0.513 g (36%) of (±)-[7-(2-naphthyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Rf=0.42 (silica, ethyl acetate:hexanes 1:3); Anal. calcd. for C26H22O4S: C, 72.54; H, 5.15. Found: C, 72.04; H, 5.04.
- Treatment of (±)-(7-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.5 g, 3.32 mmol) with 3,5-dichlorophenylboronic acid (0.95 g, 4.97 mmol), tetrakis(triphenylphosphine)palladium(0) (0.38 g, 0.33 mmol), and potassium phosphate (1.41 g, 6.64 mmol) generally according to the procedure described for Intermediate 50 provided 0.22 g (15%) of (±)-[7-(3,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Rf=0.48 (silica, ethyl acetate:hexanes 1:3); mp 113-115° C.; Anal. calcd. for C22H18Cl2O4S: C, 58.8; H, 4.04. Found: C, 58.73; H, 3.77.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with 2-methylphenyl boronic acid (0.266 g, 1.96 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.051 g, 0.065 mmol), and potassium carbonate (0.45 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 provided 0.358 g (70%) of (±)-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Rf=0.43 (silica, ethyl acetate:hexanes 1:3); mp 98-100° C.; Anal. calcd. for C23H22O4S: C, 70.03; H, 5.62. Found: C, 69.83; H, 5.61.
- Treatment of (±)-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (3.55 g, 12.9 mmol) with diisopropylethylamine (2.5 g, 19.4 mmol) and benzyl chloroformate (2.42 g, 14.2 mmol) generally according to the procedure described for Intermediate 12 provided 4.1 g (85%) of (±)-benzyl[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate as a clear oil Rf=0.64 (silica, ethyl acetate:hexanes 1:4); Anal. calcd. for C24H23F4NO3: C, 77.19; H, 6.21; N, 3.75. Found: C, 76.95; H, 6.18; N, 3.53. Chiral HPLC separation of (±)-benzyl[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OD, isopropanol:hexane 1:4) provided two fractions. Fraction 1 (Rt=7.285 min, isopropanol:hexane 1:4); Fraction 2 (Rt=9.361 min, Chiralcel OD, isopropanol:hexane 1:4).
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with 3-thiophene boronic acid (0.334 g, 2.61 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.051 g, 0.065 mmol), and potassium carbonate (0.45 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 provided 0.389 g (77%) of (+j-(7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a yellow solid. mp 90-92° C.; Anal. calcd. for C20H18O4S2: C, 62.15; H, 4.69. Found: C, 62.2; H, 4.72.
- Treatment of (±)-1-(7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methanamine (0.56 g, 2.09 mmol) with diisopropylethylamine (0.406 g, 3.14 mmol) and benzyl chloroformate (0.393 g, 2.30 mmol) generally according to the procedure described for Intermediate 12 provided 0.54 g (71%) of (±)-benzyl (7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate as a colorless oil. Rf=0.49 (silica, ethyl acetate:hexanes 2:8); Anal. calcd. for C21H19NO3S.0.3H2O: C, 68.01; H, 5.33; N, 3.78. Found: C, 67.88; H, 5.18; N, 3.72. Chiral HPLC separation of (±)-benzyl (7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralcel AD, water:methanol 1:9) provided two fractions. Fraction 1 (Rt=13.00 min, (Chiralcel AD, water:methanol 1:9); Fraction 2 (Rt=14.1 min, (Chiralcel AD, water:methanol 1:9).
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with 2-fluorophenylboronic acid (0.274 g, 1.96 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.051 g, 0.065 mmol), and potassium carbonate (0.45 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 provided 0.422 g (81%) of (±)-[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a yellow solid. mp 99-101° C.; Anal. calcd. for C22H19FO4S: C, 66.32; H, 4.81. Found: C, 65.16; H, 4.86.
- Treatment of (±)-1-[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (1.5 g, 5.36 mmol) with diisopropylethylamine (1.04 g, 8.04 mmol) and benzyl chloroformate (1.01 g, 5.89 mmol) generally according to the procedure described for Intermediate 12 afforded 1.7 g (84%) of (±)-benzyl[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate as a colorless oil Rf=0.68 (silica, ethyl acetate:hexanes 1:9); Anal. calcd. for C22H18FNO3: C, 72.72; H, 4.99; N, 3.85. Found: C, 72.65H, 5.41; N, 3.47. Chiral HPLC separation of (±)-benzyl[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OJ, hexane:isopropanol 9:1) provided two fractions. Fraction 1 (Rt=13.628 min, Chiralcel OJ, hexane:isopropanol 9:1); Fraction 2 (Rt=17.247 min, Chiralcel OJ, hexane:isopropanol 9:1).
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (10.00 g, 26.10 mmol) with 2-(trifluoromethy)phenylboronic acid (7.43 g, 39.14 mmol), dichlorobis(tri-o-tolylphosphine)palladium(II) (0.786 g, 1.3 mmol), and potassium carbonate (9.01 g, 65.19 mmol) generally according to the procedure described for Intermediate 37 afforded 8.46 g (72%) of (±)-{7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate as a tan solid. mp 116-118° C.; Anal. calcd. for C23H19F3O4S: C, 61.6; H, 4.27. Found: C, 61.91; H, 4.23.
- Treatment of (±)-1-{7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine (0.813 g, 2.46 mmol) with diisopropylethylamine (0.478 g, 3.69 mmol) and benzyl chloroformate (0.462 g, 2.71 mmol) generally according to the procedure described for Intermediate 12 gave 0.99 g (94%) of (±)-benzyl {7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methylcarbamate as a pale yellow oil Rf=0.60 (silica, ethyl acetate:hexanes 2:8); Anal. calcd. for C24H20F3NO3: C, 67.44; H, 4.71; N, 3.15. Found: C, 67.43H, 4.76; N, 3.15. Chiral HPLC separation of (±)-benzyl[7-(2-(trifluoromethyl))-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OJ, isopropanol:carbon dioxide 3:17) provided two fractions. Fraction 1 (Rt=5.252 min, Chiralcel OJ, isopropanol:carbon dioxide 3:17); Fraction 2 (Rt=6.280 min, Chiralcel OJ, isopropanol:carbon dioxide 3:17).
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.00 g, 2.61 mmol) with 2,6-dimethylphenylboronic acid (0.783 g, 5.22 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.103 g, 0.135 mmol), and potassium carbonate (0.90 g, 6.52 mmol) generally according to the procedure described for Intermediate 37 provided 0.192 g (18%) of (±)-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a yellow oil. Anal. calcd. for C24H24O4S: C, 70.56; H, 5.92. Found: C, 68.01; H, 5.6.
- Treatment of (±)-1-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (0.947 g, 3.73 mmol) with diisopropylethylamine (0.725 g, 5.60 mmol) and benzyl chloroformate (0.7647 g, 4.48 mmol) generally according to the procedure described for Intermediate 12 gave 1.26 g (87%) of (±)-benzyl[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate as a colorless oil Rf=0.56 (silica, ethyl acetate:hexanes 1:4); Anal. calcd. for C25H25NO3: C, 77.49; H, 6.50; N, 3.61. Found: C, 77.42H, 6.57; N, 3.62. Chiral HPLC separation of (±)-benzyl[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OJ, methanol:carbon dioxide 4:6) provided two fractions. Fraction 1 (Rt=2-89 min, Chiralcel OJ, methanol:carbon dioxide 4:6); Fraction 2 (Rt=3.84 min, Chiralcel OJ, methanol:carbon dioxide 4:6).
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.5 g, 1.31 mmol) with 2-methoxyphenylboronic acid (0.297 g, 1.96 mmol), dichlorobis(tri-o-tolylphosphine)palladium(II) (0.051 g, 0.065 mmol), and potassium carbonate (0.45 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 gave 0.399 g (74%) of (+)-[7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a tan solid. mp 100-103° C.; Anal. calcd. for C23H22O5S: C, 67.3; H, 5.4. Found: C, 66.95; H, 5.43.
- Treatment of (±)-1-[7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (0.296 g, 1.01 mmol) with diisopropylethylamine (1.52 g, 1.5 mmol) and benzyl chloroformate (0.190 g, 1.11 mmol) generally according to the procedure described for Intermediate 12 afforded 0.33 g (84%) (±)-benzyl[7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate of a colorless oil Rf=0.72 (silica, ethyl acetate:hexanes 2:8); Anal. calcd. for C24H23NO4: C, 74.02; H, 5.95; N, 3.6. Found: C, 73.68H, 5.81; N, 3.43.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with 2-chlorophenylboronic acid (0.306 g, 1.96 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.051 g, 0.065 mmol), and potassium carbonate (0.45 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 provided 0.380 g (70%) of (±)-[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a tan solid. mp 100-103° C.; Anal. calcd. for C22H19ClO4S: C, 63.69; H, 4.62. Found: C, 63.43; H, 4.69.
- Treatment of (±)-1-[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (0.743 g 2.52 mmol) with diisopropylethylamine (0.488 g, 3.77 mmol) and benzyl chloroformate (0.472 g, 2.77 mmol) generally according to the procedure described for Intermediate 12 afforded 0.749 g (76%) (+)-benzyl[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate as a white solid. mp 155-157° C.; Anal. calcd. for C23H20ClNO3: C, 70.14; H, 5.12; N, 3.56. Found: C, 70.1; H, 5.15; N, 3.37. Chiral HPLC separation of (±)-benzyl[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OJ, hexane:ethanol 1:1) provided two fractions. Fraction 1 (Rt=9.655 min, Chiralcel OJ, hexane:ethanol 1:1); Fraction 2 (Rt=16.300 min, Chiralcel OJ, hexane:ethanol 1:1).
- Treatment of (±)-[7-(2-isopropylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylamine (1.69 g, 5.56 mmol) with diisopropylethylamine (1.08 g, 8.34 mmol) and benzyl chloroformate (1.04 g, 6.12 mmol) generally according to the procedure described for Intermediate 12 gave 1.92 (89%) of (+)-benzyl[7-(2-isopropylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate as a yellow oil. Rf=0.66 (silica, ethyl acetate:hexanes 1:4); Anal. calcd. for C26H27NO3: C, 77.78; H, 6.78; N, 3.49. Found: C, 77.5; H, 6.7; N, 3.33. Chiral HPLC separation of (±)-[7-(2-isopropylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OD, hexane:isopropanol 9:1) provided two fractions. Fraction 1 (Rt=8.131 min, Chiralcel OD, hexane:isopropanol 9:1); Fraction 2 (Rt=11.048 min, Chiralcel OD, hexane:isopropanol 9:1).
- Treatment of (±)-(7-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.5 g, 3.32 mmol) with 3-methylbenzeneboronic (0.68 g, 4.97 mmol), tetrakis(triphenylphosphine)palladium(0) (0.38 g, 0.33 mmol), and potassium phosphate (1.41 g, 6.64 mmol) generally according to the procedure described for Intermediate 50 provided 0.899 g (69%) of (±)-[7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Rf=0.44 (silica, ethyl acetate:hexanes 1:3); mp 81-82° C.; Anal. calcd. for C23H22O4S.0.2H2O: C, 69.39; H, 5.67. Found: C, 69.42; H, 5.49.
- Treatment of (±)-[7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (1.76 g, 6.38 mmol) with diisopropylethylamine (2.47 g, 19.17 mmol) followed by benzyl chloroformate (1.19 g, 7.02 mmol) generally according to the procedure described for Intermediate 12 provided 1.4 g (58%) of (±)-benzyl[7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate as a clear oil. Rf=0.68 (silica, ethyl acetate:hexanes 1:2); Anal. calcd. for C24H23NO3: C, 77.19; H, 6.20; N, 3.75. Found: C, 76.88H, 6.25; N, 3.51. Chiral HPLC separation of (±)-benzyl[7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralpak AD, ethanol:hexane 1:1) provided two fractions. Fraction 1 (Rt=10.439 min, Chiralpak AD, ethanol:hexane 1:1); Fraction 2 (Rt=11.833 min, Chiralpak AD ethanol:hexane 1:1).
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with 3-fluorophenylboronic acid (0.274 g, 1.96 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.051 g, 0.065 mmol), and potassium carbonate (0.45 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 provided 0.392 g (75%) of (±)-[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a light yellow solid. mp 88-90° C.; Anal. calcd. for C22H19FO4S: C, 66.32; H, 4.81. Found: C, 65.63; H, 4.84.
- Treatment of (±)-[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (0.798 g, 2.856 mmol) with diisopropylethylamine (0.554 g, 4.286 mmol) and benzyl chloroformate (0.536 g, 3.143 mmol) generally according to the procedure described for Intermediate 12 afforded 1.01 g (94%) of (±)-benzyl[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate as a white solid. Rf=0.40 (silica, ethyl acetate:hexanes 1:4); Anal. Calcd. for C23H20FNO3: C, 73.2; H, 5.34; N, 3.71. Found: C, 92.96; H, 5.38; N, 3.59.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with 3-chlorophenylboronic acid (0.306 g, 1.96 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.051 g, 0.065 mmol), and potassium carbonate (0.45 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 provided 0.404 g (75%) of (+)-[7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a light yellow solid. mp 101-103° C.; Anal. calcd. for C22H19ClO4S: C, 63.69; H, 4.62. Found: C, 63.59; H, 4.52.
- Treatment of (±)-1-[7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (1.6 g, 5.4 mmol) with diisopropylethylamine (1.197 g, 9.26 mmol) and benzyl chloroformate (1.02 g, 5.96 mmol) generally according to the procedure described for Intermediate 12 afforded 1.59 g (75%) of (±)-benzyl[7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate as a colorless oil. Rf=0.56 (silica, ethyl acetate:hexanes 1:9); Anal. calcd. for C23H20ClNO3: C, 70.14; H, 5.12; N, 3.56. Found: C, 69.11; H, 5.07; N, 3.37. Chiral HPLC separation of (±)-benzyl[7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OD, hexane:isopropanol 9:1) provided two fractions. Fraction 1 (Rt=15.935 min Chiralcel OD, hexane:isopropanol 9:1); Fraction 2 (Rt=18.546 min, Chiralcel OD, hexane:isopropanol 9:1).
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (5.00 g, 13.04 mmol) with 3-methoxyphenylboronic acid (2.97 g, 19.57 mmol), dichlorobis(tri-o-tolylphosphine)palladium(II) (0.512 g, 0.652 mmol) and potassium carbonate (4.51 g, 32.62 mmol) generally according to the reaction conditions described for Intermediate 37 gave 4.48 g (84%) of (±)-[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. mp 141-142° C.; Anal. calcd. for C23H22O5S: C, 67.3; H, 5.4. Found: C, 66.51; H, 5.41.
- Treatment of (±)-1-[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (2.4 g, 9.4 mmol) with diisopropylethylamine (1.82 g, 14.10 mmol) and benzyl chloroformate (1.92 g, 11.28 mmol) generally according to the reaction conditions described for Intermediate 12 afforded 3.42 g (93%) of (±)-benzyl[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate as a colorless oil. Rf=0.78 (silica, ethyl acetate:hexanes 1:4); Anal. calcd. for C24H23NO4: C, 74.02; H, 5.95; N, 3.6. Found: C, 73.52; H, 6.06; N, 3.28.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with 3-(trifluoromethyl)phenylboronic acid (0.372 g, 1.96 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.051 g, 0.065 mmol), and potassium carbonate (0.45 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 provided 0.383 g (65%) of (±)-{7-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate as a white solid. mp 90-93° C.; Anal. calcd. for C23H19F3O4S: C, 61.6; H, 4.27. Found: C, 61.52; H, 4.21.
- Treatment of (±)-[7-(3-trifluoromethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (1.67 g, 5.06 mmol) with diisopropylethylamine (0.98 g, 7.59 mmol) and benzyl chloroformate (1.04 g, 6.07 mmol) generally according to the procedure described for Intermediate 12 provided 2.1 g (97%) of (±)-benzyl {7-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl)}methylcarbamate as a colorless oil. Rf=0.51; Anal. calcd. for C24H20F3NO3: C, 67.44; H, 4.72; N, 3.28. Found: C, 67.08; H, 5.05; N, 3.22.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (11.2 g, 29.22 mmol) with 4-methylphenylboronic acid (5.96 g, 43.84 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (1.148 g, 1.46 mmol), and potassium carbonate (10.10 g, 73.07 mmol) generally according to the procedure described for Intermediate 37 afforded 9.8 g (85%) of (+)-[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate a white solid. mp 145-147° C.; Anal. calcd. for C23H22O4S: C, 70.03; H, 5.62. Found: C, 69.91; H, 5.70.
- Treatment of (±)-[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (0.385 g, 1.396 mmol) with diisopropylethylamine (0.270 g, 2.09 mmol) and benzyl chloroformate (0.285 g, 1.675 mmol) generally according to the procedure described for Intermediate 12 provided 0.483 g (93%) of (+)-benzyl[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate as colorless oil. Rf=0.47 (silica, ethyl acetate:hexane 2:8); mp 83-86° C.; Anal. calcd. for C24H23NO3: C, 77.19; H, 6.21; N, 3.75. Found: C, 76.97; H, 5.99; N, 3.68. Chiral HPLC separation of (±)-benzyl[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralpak OD, methanol:carbon dioxide 1:1) provided two fractions. Fraction 1 (Rt=3.788 min Chiralpak OD, methanol:carbon dioxide 1:1); Fraction 2 (Rt=4.398 min, Chiralpak OD, methanol:carbon dioxide 1:1).
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (3.0 g, 7.82 mmol) with 4-methoxyphenylboronic acid (1.78 g, 11.74 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.307 g, 0.391 mmol), and potassium carbonate (2.70 g, 19.57 mmol) generally according to the procedure described for Intermediate 37 provided 2.2 g (68%) of (±)-[7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a yellow solid. mp 116-117° C.; Anal. calcd. for C23H22O5S: C, 67.30; H, 5.40. Found: C, 67.31; H, 5.35.
- Treatment of 1-[7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (0.727 g, 2.49 mmol) with diisopropylethylamine (0.483 g, 3.73) and benzyl chloroformate (0.510 g, 2.99 mmol) generally according to the procedure described for Intermediate 12 provided 0.820 g of (+)-benzyl[7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate as a colorless oil. Rf=0.48 (silica, ethyl acetate:hexanes 1:5); Anal. calcd. for C24H23NO4: C, 74.02; H, 5.95; N, 3.60. Found: C, 73.66H, 6.13; N, 3.42. Chiral HPLC separation of (±)-benzyl[7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel AD, methanol) provided two fractions. Fraction 1 (Rt=7.386 min, Chiralcel AD, methanol); Fraction 2 (Rt=10.882 min, Chiralcel AD, methanol).
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with 4-(trifluoromethyl)phenylboronic acid (0.372 g, 1.96 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.051 g, 0.065 mmol), and potassium carbonate (0.45 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 provided 0.435 g (74%) of (±)-{7-[4-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate as a light yellow solid. mp 116-118° C.; Anal. calcd. for C23H19F3O4S: C, 61.6; H, 4.27. Found: C, 61.37; H, 4.36.
- Treatment of (±)-1-{7-[4-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine (1.8 g, 6.14 mmol) with diisopropylethylamine (1.06 g, 8.20) and benzyl chloroformate (1.12 g, 6.56 mmol) generally according to the procedure described for Intermediate 12 afforded 2.38 g (91%) of (+)-benzyl {7-[4-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methylcarbamate as a white solid. Rf=0.48 (silica, ethyl acetate:hexanes 1:4); mp 100-102° C.; Anal. calcd. for C24H20F3NO3: C, 67.44; H, 4.72; N, 3.28. Found: C, 67.37; H, 4.69; N, 3.15.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with 4-fluorophenylboronic acid (0.274 g, 1.96 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.051 g, 0.065 mmol), and potassium carbonate (0.45 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 provided 0.408 g (78%) of (±)-[7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a light yellow solid. mp 83-86° C.; Anal. calcd. for C22H19FO4S: C, 66.32; H, 4.81. Found: C, 66.11; H, 4.61.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with 4-chlorophenylboronic acid (0.306 g, 1.96 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.051 g, 0.065 mmol), and potassium carbonate (0.45 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 provided 0.367 g (68%) of (±)-[7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as an orange solid. mp 130-133° C.; Anal. calcd. for C22H19ClO4S: C, 63.69; H, 4.62. Found: C, 62.82; H, 4.56.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (5.0 g, 13.05 mmol) with 2,4-dichlorophenylboronic acid (3.73 g, 19.57 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.512 g, 0.652 mmol), and potassium carbonate (4.51 g, 32.62 mmol) generally according to the procedure described for Intermediate 37 provided 4.5 g (75%) of (±)-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a yellow oil. Anal. calcd. for C22H18Cl2O4S: C, 58.8; H, 4.04. Found: C, 59.01; H, 4.09.
- Treatment of (±)-1-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (1.9 g, 5.75 mmol) with diisopropylethylamine (1.11 g, 8.62) and benzyl chloroformate (1.18 g, 6.89 mmol) generally according to the procedure described for Intermediate 12 afforded 2.14 g (87%) of (±)-benzyl[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate as a white solid. mp 87-89° C.; Anal. calcd. for C23H19Cl2NO3: C, 64.5; H, 4.47; N, 3.27. Found: C, 64.65; H, 4.78; N, 3.08.
- Treatment of 4-chloro-2-methoxyphenol (30.0 g, 0.19 mol) with sodium hydride (9.1 g, 0.23 mol, 60 wt. %) and allyl bromide (27.46 g, 0.23 mol) followed by treatment of the resultant allyl ether in refluxing mesitylene generally according to the procedure described for Intermediate 8 gave 2-allyl-4-chloro-6-methoxyphenol as a yellow oil. Treatment of 2-allyl-4-chloro-6-methoxyphenol with sodium hydride (7.08 g, 0.177 mol, 60 wt. %) and benzyl bromide (30.27 g, 0.177 mol) generally according to the procedure described for Intermediate 13 provided 1-allyl-2-(benzyloxy)-5-chloro-3-methoxybenzene as a pale yellow oil. Treatment of the olefin (35.5 g, 0.123 mol) of with AD-mix-α (132.0 g) generally according to the procedure described for Intermediate 2 gave 35 g (54%) of (±)-3-[2-(benzyloxy)-5-chloro-3-methoxyphenyl]propane-1,2-diol as a white solid. mp. 65-68° C. Anal. calcd. for C17H19ClO4: C, 63.26; H, 5.93. Found: C, 65.29; H, 6.23.
- Treatment of (±)-3-[2-(benzyloxy)-5-chloro-3-methoxyphenyl]-1,2-propanediol (32 g, 0.1 mol) with p-toluenesulfonyl chloride (21 g, 0.11 mol) in pyridine generally according to the procedure described for intermediate 3 provided (±)-3-[2-(benzyloxy)-5-chloro-3-methoxyphenyl]-2-hydroxypropyl 4-methylbenzenesulfonate. Treatment of the tosylate with palladium on carbon (2.32 g, 5 wt. %) generally according to the procedure described for Intermediate 4 afforded (±)-3-(5-chloro-2-hydroxy-3-methoxyphenyl)-2-hydroxypropyl 4-methylbenzenesulfonate. Treatment of the phenol with triphenylphosphine (23.6 g, 0.09 mol) and diisopropyl azodicarboxylate (18.2 g, 0.09 mol) generally according to the procedure described for Intermediate 5 afforded 28 g (76%) of (±)-(5-chloro-7-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a pale yellow solid. mp 99-102° C.; Anal. calcd. for C17H17ClO5S: C, 55.36; H, 4.65. Found: C, 55.35; H, 4.62.
- Treatment of (±)-(5-chloro-7-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (22.1 g, 0.06 mol) with hydrogen bromide (400 mL, 30 wt. % in acetic acid) generally according to the procedure described for Intermediate 46 gave 14.6 g of (±)-(5-chloro-7-hydroxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a colorless oil. Treatment of (±)-(5-chloro-7-hydroxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (4.5 g, 12.68 mmol) with trifluoromethanesulfonic anhydride (2.34 mL, 13.9 mmol) and diisopropylethylamine (2.43 mL, 13.9 mmol) generally according to the procedure described for Intermediate 7 provided 6.27 g (99%) of (±)-(5-chloro-7-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a light yellow solid. mp 55-57° C.; Anal. calcd. for C17H14ClF3O7S2: C, 41.94; H, 2.90. Found: C, 42.10; H, 2.76.
- Treatment of (±)-(5-chloro-7-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.50 g, 3.10 mmol) with phenyl boronic acid (0.564 g, 4.60 mmol), dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II) dichloromethane adduct (0.252 g, 0.30 mmol), and potassium carbonate (0.829 g, 6.0 mmol) generally according to the procedure described for Intermediate 35 provided 0.94 g of a white paste. Re-crystallization from methanol afforded 0.6 g (47%) of (±)-(5-chloro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. mp 127-130° C.; Anal. calcd. for C22H19ClO4S: C, 63.69; H, 4.62. Found: C, 62.51; H, 4.48.
- Treatment of (±)-(5-chloro-7-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.50 g, 3.10 mmol) with 3-chlorophenylboronic acid (0.72 g, 4.60 mmol), dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II) dichloromethane adduct (0.252 g, 0.30 mmol), and potassium carbonate (0.829 g, 6.0 mmol) generally according to the procedure described for Intermediate 35 gave 1.1 g (80%) of (±)-[5-chloro-7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. mp 80-82° C. Anal. calcd. for C22H18Cl2O4S: C, 58.8; H, 4.04. Found: C, 56.91; H, 3.82.
- Treatment of (±)-(5-chloro-7-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.50 g, 3.10 mmol) with thiophene-3-boronic acid (0.62 g, 4.88 mmol), dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II) dichloromethane adduct (0.265 g, 0.325 mmol), and potassium carbonate (0.898 g, 6.5 mmol) generally according to the procedure described for Intermediate 35 provided 0.22 g (17%) of (±)-(5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. mp 115-117° C.; Anal. calcd. for C20H17ClO4S2: C, 57.07; H, 4.07. Found: C, 56.17; H, 3.85.
- Treatment of (±)-(5-chloro-7-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.50 g, 3.10 mmol) with 3-methylphenylboronic acid (0.63 g, 4.60 mmol), dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II) dichloromethane adduct (0.252 g, 0.30 mmol), and potassium carbonate (0.829 g, 6.0 mmol) generally according to the procedure described for Intermediate 35 gave (±)-[5-chloro-7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a colorless oil. Treatment of the tosylate with sodium azide (0.31 g, 4.78 mmol) generally according to the procedure described for Intermediate 98 afforded 0.32 g (34%) of (±)-2-(azidomethyl)-5-chloro-7-(3-methylphenyl)-2,3-dihydro-1-benzofuran as a tan solid. mp 48-50° C.; Anal. calcd. for C16H14ClN3O: C, 64.11; H, 4.71; N, 14.02. Found: C, 62.95; H, 4.62; N, 13.72.
- To a solution of (±)-(5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (4.5 g, 10.69 mmol) in dimethylsulfoxide (150 mL) was added sodium azide (3.6 g, 55.38 mmol) and the reaction mixture was heated to 70° C. and allowed to stir for 6 h. The reaction mixture was cooled to room temperature and diluted with water (300 mL) and diethyl ether (200 mL). The aqueous layer was separated and extracted with diethyl ether (200 mL). The combined organic layers were washed with water (3×200 mL), saturated aqueous sodium chloride (100 mL), dried (magnesium sulfate), and the solvent removed in vacuo to afford 2.6 g (83%) of (±)-2-(azidomethyl)-5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran as a white solid. mp 50-52° C.; Anal. calcd. for C13H10ClN3OS: C, 53.52; H, 3.45; N, 14.40. Found: C, 53.50; H, 3.33; N, 14.26.
- Treatment of (±)-(5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylamine (2.45 g, 8.11 mmol) with benzyl chloroformate (2.07 g, 12.15 mmol) and diisopropylethylamine (3.43 g, 24.32 mmol) generally according to the procedure described for Intermediate 12 provided 2.6 g (81%) of (±)-benzyl (5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate as a white solid. mp 90-92° C.; Anal. calcd. for C21H18ClNO3S: C, 63.07; H, 4.54; N, 3.50. Found: C, 63.44; H, 4.51; N, 3.43. Chiral HPLC separation of (±)-benzyl (5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralpak AD, hexane:ethanol 1:1) provided two fractions. Fraction 1 (Rt=11.538 min, (Chiralpak AD, hexane:ethanol 1:1); Fraction 2 (Rt=17.694 min, (Chiralpak AD, hexane:ethanol 1:1).
- Treatment of 2-bromo-5-fluorophenol (10.00 g, 0.052 mol) with potassium carbonate (29.30 g, 0.209 mol) and allyl bromide (7.60 g, 0.063 mol) generally according to the reaction procedure described for Intermediate 8 provided 12.1 g (99%) of 2-(allyloxy)-1-bromo-4-fluorobenzene as a colorless oil. Rf=0.37 (silica, ethyl acetate:hexanes 1:9); 1H NMR (DMSO-d6) δH 7.58 (dd, 1H); 7.05 (dd, 1H); 6.75 (dt, 1H); 6.02 (m, 1H); 5.43 (d, 1H); 5.27 (d, 1H); 4.65 (m, 2H).
- Treatment of 2-(allyloxy)-1-bromo-4-fluorobenzene (12.00 g, 0.052 mol) in refluxing mesitylene generally according to the reaction procedure described for Intermediate 8 provided 11.5 g (95%) of 2-allyl-6-bromo-3-fluorophenol as a pale yellow oil. Rf=0.48 (silica, ethyl acetate:hexanes 1:4); Anal. calcd. for C9H8BrFO: C, 46.78; H, 3.49. Found: C, 47.59; H, 3.47.
- Treatment of 2-allyl-6-bromo-3-fluorophenol (9.01 g, 0.039 mol) with 3-chloroperoxybenzoic acid (77%, 13.46 g, 0.06 mol) followed by potassium carbonate (13.82 g, 0.10 mol) generally according to the reaction procedure described for Intermediate 9 gave 6.71 g (70%) of (±)-(7-bromo-4-fluoro-2,3-dihydro-1-benzofuran-2-yl)methanol as a white solid. Rf=0.20 (silica, ethyl acetate:hexanes 1:4); mp 40-43° C.; Anal. calcd. for C9H8BrFO2.0.2H2O: C, 43.13; H, 3.38. Found: C, 42.94; H, 3.15.
- Treatment of (±)-(7-bromo-4-fluoro-2,3-dihydro-1-benzofuran-2-yl)methanol (6.21 g, 0.025 mol) with p-toluenesulfonyl chloride (5.26 g, 0.028 mol) in pyridine (120 mL) generally according to the procedure described for Intermediate 10 afforded 8.85 g (88%) of (±)-(7-bromo-4-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. Rf=0.60 (silica, ethyl acetate:hexanes 1:1); mp 100-103° C.; Anal. calcd. for C16H14BrFO4S: C, 47.89; H, 3.52. Found: C, 47.89; H, 3.68.
- Treatment of (±)-(7-bromo-4-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (2.0 g, 4.98 mmol) with phenyl boronic acid (0.91 g, 7.22 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.392 g, 0.498 mmol), and potassium carbonate (1.72 g, 12.46 mmol) according to the procedure described for Intermediate 37 gave 1.07 g (54%) of (±)-(4-fluoro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. Rf=0.46 (silica, ethyl acetate:hexanes 1:4); 1H NMR (DMSO-d6) δH 7.70 (d, 2H); 7.53 (d, 2H); 7.40 (t, 2H); 7.32 (m, 4H); 6.77 (t, 1H); 5.15 (m, 1H); 4.31 (dd, 1H); 4.22 (dd, 1H); 3.30 (dd, 1H, obscured by H2O peak); 3.01 (dd, 1H).
- Treatment of (±)-(7-bromo-4-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (2.05 g, 5.11 mmol) with 2-methylphenyl boronic acid (1.04 g, 7.66 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.201 g, 0.255 mmol), and potassium carbonate (1.77 g, 12.77 mmol) generally according to the procedure described for Intermediate 37 provided 1.38 g (65%) of (±)-[4-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Rf=0.34 (silica, ethyl acetate:hexanes 1.5:8.5); Anal. calcd. for C23H21FO4S: C, 66.97; H, 5.13. Found: C, 66.95; H, 4.76.
- Treatment of 1-(allyloxy)-2-bromo-4-fluorobenzene (23.90 g, 0.103 mol) in refluxing mesitylene (50 mL) generally according to the procedure described for Intermediate 8 provided 23.44 g (99%) 2-allyl-6-bromo-4-fluorophenol as a brown oil. Rf=0.64 (silica, ethyl acetate:hexanes 1:19); Anal. calcd. for C9H8BrFO: C, 46.78; H, 3.49. Found: C, 49.19; H, 3.59.
- Treatment of 2-allyl-6-bromo-4-fluorophenol (25.1 g, 0.109 mol) with 3-chloroperoxybenzoic acid (77%, 56.24 g, 0.326 mol) followed by potassium carbonate (62.19 g, 0.45 mol) generally according to the procedure described for Intermediate 9 provided 20.98 g (78%) of (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methanol as a white solid. Rf=0.54 (silica, ethyl acetate:hexanes 1:1); mp 53-57° C.; Anal. calcd. for C9H8BrFO2.0.1C4H8O2: C, 44.13; H, 3.47. Found: C, 44.17; H, 3.16.
- Treatment of (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methanol (11.5 g, 0.047 mol) with p-toluenesulfonyl chloride (9.76 g, 0.051 mol) generally according to the procedure described for Intermediate 10 gave 12.50 g (66%) (O)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. Rf=0.44 (silica, ethyl acetate:hexanes 1:4); mp 84-86° C.; Anal. calcd. for C16H14BrFO4S: C, 47.89; H, 3.52. Found: C, 47.65; H, 3.63.
- Treatment of (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (2.00 g, 4.98 mmol) with phenyl boronic acid (0.912 g, 7.48 mmol), dichlorobis(tri-o-tolylphosphine)palladium(II) (0.196 g, 0.249 mmol), and potassium carbonate (1.72 g, 12.46 mmol) generally according to the procedure described for Intermediate 37 gave 1.62 g (82%) of (±)-(5-fluoro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a yellow oil. Rf=0.54 (silica, ethyl acetate:hexanes 1:4); Anal. calcd. for C22H19FO4S.0.2C4H8O2: C, 65.82; H, 4.99. Found: C, 65.77; H, 4.99.
- Treatment of (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (2.00 g, 4.98 mmol) with 2-methylphenyl boronic acid (1.017 g, 7.48 mmol), dichlorobis(tri-o-tolylphosphine)palladium(II) (0.196 g, 0.249 mmol), and potassium carbonate (1.72 g, 12.46 mmol) generally according to the procedure described for Intermediate 37 provided 1.58 g (77%) of (±)-[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a colorless oil. Rf=0.47 (silica, ethyl acetate:hexanes 3:17); Anal. calcd. for C22H19FO4S.0.2C4H8O2: C, 66.46; H, 5.30. Found: C, 66.25; H, 4.98.
- Treatment of (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (2.00 g, 4.98 mmol) with 2-chlorophenyl boronic acid (1.17 g, 7.48 mmol), dichlorobis(tri-o-tolylphosphine)palladium(II) (0.196 g, 0.249 mmol), and potassium carbonate (1.72 g, 12.46 mmol) generally according to the procedure described for Intermediate 37 afforded 1.44 g (67%) of (±)-[7-(2-chlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Rf=0.26 (silica, ethyl acetate:hexanes 3:17); Anal. calcd. for C22H18ClFO4S: C, 61.04; H, 4.19. Found: C, 61.02; H, 3.95.
- Treatment of (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (2.00 g, 4.98 mmol) with 2-fluorophenyl boronic acid (1.05 g, 7.48 mmol), dichlorobis(tri-o-tolylphosphine)palladium(II) (0.196 g, 0.249 mmol), and potassium carbonate (1.72 g, 12.46 mmol) generally according to the procedure described for Intermediate 37 gave 1.94 g (94%) of (±)-[5-fluoro-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a yellow oil. Rf=0.38 (silica, ethyl acetate:hexanes 3:17); Anal. calcd. for C22H18F2O4S: C, 63.45; H, 4.36. Found: C, 63.13; H, 4.19.
- Treatment of (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (4.01 g, 10.0 mmol) with 2-(trifluoromethyl)-phenyl boronic acid (2.85 g, 15.0 mmol), dichlorobis(tri-o-tolylphosphine)palladium(1) (0.786 g, 1.00 mmol), and potassium carbonate (3.46 g, 25.00 mmol) generally according to the procedure described for Intermediate 37 provided 4.34 g (93%) of (±)-{5-fluoro-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate as a yellow oil. Rf=0.54 (silica, ethyl acetate:hexanes 3:7); Anal. calcd. for C23H18F4O4S: C, 59.22; H, 3.89. Found: C, 60.19; H, 4.29.
- Treatment of (±)-1-[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (3.11 g, 12.1 mmol) with diisopropylethylamine (2.34 g, 18.1 mmol) and benzyl chloroformate (2.27 g, 13.3 mmol) generally according to the procedure described for Intermediate 12 gave 4.35 (92%) of (±)-benzyl[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate as a colorless oil. Rf=0.83 (silica, ethyl acetate:hexanes 1:9); Anal. calcd. for C24H22FO3.0.2H2O: C, 72.97; H, 5.72; N, 3.55. Found: C, 72.8; H, 5.72; N, 3.48. Chiral HPLC separation of (+)-benzyl[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OD, hexane:isopropanol 8:2) provided two fractions. Fraction 1 (Rt=7.269 min, Chiralcel OD, hexane:isopropanol 8:2); Fraction 2 (Rt=8.449 min, Chiralcel OD, hexane:isopropanol 8:2).
- Treatment of (±)-1-[7-(2-chlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methanamine (2.92 g, 10.5 mmol) with diisopropylethylamine (1.70 g, 13.1 mmol) and benzyl chloroformate (1.97 g, 11.6 mmol) generally according to the procedure described for Intermediate 12 provided 3.02 (70%) of (±)-benzyl[7-(2-chlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate as a colorless oil. Rf=0.76 (silica, ethyl acetate:hexanes 1:9); Anal. calcd. for C23H19ClFNO3.0.5H2O: C, 65.64; H, 4.79; N, 3.33. Found: C, 65.28; H, 4.73; N, 3.18. Chiral HPLC separation of (±)-benzyl[7-(2-chlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OJ, hexane:ethanol 1:1) provided two fractions. Fraction 1 (Rt=9.322 min, Chiralcel OJ, hexane:ethanol 1:1); Fraction 2 (Rt=13.646 min, Chiralcel OJ, hexane:ethanol 1:1).
- Treatment of (±)-1-{5-fluoro-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine (1.87 g, 5.38 mmol) with diisopropylethylamine (1.74 g, 13.4 mmol) and benzyl chloroformate (1.01 g, 5.92 mmol) following the procedure described for Intermediate 12 provided 2.03 (85%) of (±)-benzyl {5-fluoro-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methylcarbamate as a white solid. Rf=0.69 (silica, ethyl acetate:hexanes 1:9); mp 76-80° C.; Anal. calcd. for C24H19F4NO3: C, 64.72; H, 4.3; N, 3.14. Found: C, 65.01; H, 4.3; N, 2.99.
- Treatment of 2-allyl-6-bromo-3,4-difluorophenol (5.0 g, 0.020 mol) with 3-chloroperoxybenzoic acid (77%, 8.1 g, 0.036 mol) followed by potassium carbonate (6.94 g, 0.050 mol) generally according to the procedure described for Intermediate 9 afforded (+)-(7-bromo-4,5-difluoro-2,3-dihydro-1-benzofuran-2-yl)methanol a brown oil. Treatment of the alcohol with diisopropylethylamine (2.57 g, 0.020 mol), p-toluenesulfonyl chloride (2.28 g, 0.012 mol), and 4-(dimethylamino)pyridine (0.29 g, 2.375 mmol) generally according to the procedure described for Intermediate 45 gave 2.9 g (35%) of (±)-(7-bromo-4,5-difluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. Rf=0.46 (silica, ethyl acetate:hexanes 1:3); 1H NMR (DMSO-d6) δH 7.73 (d, 2H); 7.50 (dd, 1H); 7.43 (d, 2H); 5.15 (m, 1H); 4.3 (dd, 1H); 4.22 (dd, 1H); 3.45 (dd, 1H); 3.08 (dd, 1H).
- To a solution of (±)-(7-bromo-4,5-difluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.5 g, 3.59 mmol) in dioxane (30 mL) was added phenylboronic acid (0.656 g, 5.38 mmol), dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II) dichloromethane adduct (0.293 g, 0.359 mmol), and potassium carbonate (0.993 g, 7.18 mmol) and the reaction mixture was heated at reflux for 48 h. The reaction mixture was filtered (celite), rinsed (ethyl acetate), and the combined organic layers were washed with water (100 mL), aqueous sodium chloride (75 mL), dried (sodium sulfate) and the solvent was removed in vacuo to provide a crude solid. Purification by column chromatography (silica, ethyl acetate:hexane 1:9) afforded 1.19 g (80%) of (±)-(4,5-difluoro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. Rf=0.76 (silica, ethyl acetate:hexanes 1:9); 1H NMR (DMSO-d6) δH 7.69 (d, 2H); 7.50 (dd, 1H); 7.56 (d, 2H); 7.35 (m, 6H); 5.14 (m, 1H); 4.30 (dd, 1H); 4.20 (dd, 1H); 3.39 (dd, 1H); 3.05 (dd, 1H).
- To a solution of (±)-(4,5-difluoro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.0 g, 2.40 mmol) in N,N-dimethylformamide (25 mL) was added sodium azide (0.781 g, 12.02 mmol) and the reaction mixture was heated to 70° C. and allowed to stir for 3 h. The reaction mixture was allowed to cool and the solvent was removed in vacuo to provide a crude solid. The residue was suspended in ethyl acetate (100 mL) and washed with water (50 mL) and aqueous sodium chloride (50 mL), was dried (sodium sulfate) and the solvent was removed in vacuo to give a crude solid. Purification by flash column chromatography (silica, ethyl acetate:hexanes 1:9) provided 0.68 g (99%) of (±)-(4,5-difluoro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl azide as a white solid. Rf=0.93 (silica, ethyl acetate:hexanes 1:9); 1H NMR (DMSO-d6) δH 7.65 (d, 2H); 7.41 (m, 3H); 7.31 (t, 1H); 5.15 (m, 1H); 3.64 (m, 2H); 3.46 (dd, 1H); 3.10 (dd, 1H).
- Treatment of (±)-(7-bromo-4,5-difluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.5 g, 3.59 mmol) with 2-methylphenyl boronic acid (0.732 g, 5.38 mmol), dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II) dichloromethane adduct (0.293 g, 0.359 mmol), and potassium carbonate (0.993 g, 7.18 mmol) generally according to the procedure described for Intermediate 118 afforded 1.3 g (84%) of (±)-[4,5-difluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Rf=0.72 (silica, ethyl acetate:hexanes 1:4); 1H NMR (DMSO-d6) δH 7.67 (d, 2H); 7.38 (d, 2H); 7.20 (m, 3H); 7.05 (m, 2H); 5.05 (m, 1H); 4.22 (dd, 2H); 4.13 (dd, 1H); 3.40 (dd, 1H); 3.02 (dd, 1H); 2.05 (s, 3H).
- Treatment of (±)-[4,5-difluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (1.3 g, 3.02 mmol) with sodium azide (0.983 g, 15.11 mmol) generally according to the procedure described for intermediate 98 gave 0.82 g (90%) of (±)-[4,5-difluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl azide as a colorless oil. Rf=0.69 (silica, ethyl acetate:hexanes 1:4); 1H NMR (DMSO-d6) δH 7.25 (d, 2H); 7.14 (m, 3H); 5.06 (m, 1H); 3.67 (dd, 1H); 3.55 (dd, 1H); 3.46 (dd, 1H); 3.11 (dd, 1H); 2.15 (s, 3H).
- Treatment of 4-chloro-2-methoxyphenol (15.00 g, 0.10 mol) with sodium hydride (4.4 g, 0.11 mol, 60 wt. %) and 3-chloro-2-methylpropene (12.00 g, 0.12 mol) generally according to the procedure described for Intermediate 13 provided 19.3 g (91%) of 4-chloro-2-methoxy-1-[(2-methylprop-2-enyl)oxy]benzene as a colorless oil. Treatment of the allyl ether in refluxing mesitylene generally according to the procedure described for Intermediate 8 afforded 15.5 g (78%) of 4-chloro-2-methoxy-6-(2-methylprop-2-enyl)phenol as a pale yellow oil. Treatment of 4-chloro-2-methoxy-6-(2-methylprop-2-enyl)phenol (10.00 g, 0.047 mol) with 3-chloroperoxybenzoic acid (20.00 g, 0.089 mol, 77%) followed by potassium carbonate (20.00 g, 0.145 mol) generally according to the Procedure described for Intermediate 9 provided 8.00 g (74%) of (±)-(5-chloro-7-methoxy-2-methyl-2,3-dihydro-1-benzofuran-2-yl)methanol as a light yellow oil. Treatment of (±)-(5-chloro-7-methoxy-2-methyl-2,3-dihydro-1-benzofuran-2-yl)methanol (10.8 g, 0.047 mol) with p-toluenesulfonyl chloride (13.5 g, 0.071 mol), diisopropylethylamine (12.15 g, 0.094 mol), and 4-(dimethylamino)pyridine (0.35 g, 2.83 mmol) generally according to the procedure described for Intermediate 45 gave 13.8 g (76%) of (±)-(5-chloro-7-methoxy-2-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. mp 113-115° C.; Anal. calcd. for C18H19ClO5S: C, 56.47; H, 5.00. Found: C, 55.82; H, 4.94.
- Treatment of (±)-(5-chloro-7-methoxy-2-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (13.80 g, 0.036 mol) with hydrogen bromide (200 mL, 30 wt. % in acetic acid) generally according to the procedure described for Intermediate 46 afforded 11.7 g (80%) of (±)-(5-chloro-7-hydroxy-2-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. mp 135-137° C.; Anal. calcd. for C17H17ClO5S: C, 55.36; H, 4.65. Found: C, 54.35; H, 4.52.
- Treatment of (±)-(5-chloro-7-hydroxy-2-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (11.7 g, 0.032 mol) with trifluoromethanesulfonic anhydride (10.34 g, 0.037 mol) and diisopropylethylamine (4.74 g, 0.037 mol) generally according to the procedure described for Intermediate 7 provided 13.0 g (82%) of (±)-(5-chloro-2-methyl-7-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. mp 100-102° C.; Anal. calcd. for C18H16ClF3O7S2: C, 43.16; H, 3.22. Found: C, 43.07; H, 3.04.
- Fraction 1 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl (7-tert-butyl-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Rt=4.39 min, Chiralpak OD, 2-butanol:carbon dioxide 2:8). [α]D 25=−17.46 (c 10.0 in methanol); Anal. calcd. for C22H27NO4: C, 71.52; H, 7.37; N, 3.79. Found C, 71.2; H, 7.61; N, 3.62.
- Fraction 2 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl [(7-tert-butyl-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl]carbamate (Rt=5.07 min, Chiralpak OD, 2-butanol:carbon dioxide 2:8). [α]D 25=+22.18 (c 10.0 in methanol); Anal. calcd. for C22H27NO4: C, 71.52; H, 7.37; N, 3.79. Found C, 70.33; H, 7.49; N, 3.5.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (8.0 g, 20.87 mmol) with [E]-2-tert-butylvinylboronic acid (4.01 g, 31.31 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.82 g, 1.04 mmol), and potassium carbonate (7.21 g, 52.19 mmol) generally according to the procedure described for Intermediate 37 provided 6.54 g (81%) of (±)-{7-[(1E)-3,3-dimethylbut-1-enyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate as a white solid. mp 85-88° C.; Anal. calcd. for C22H26O4S: C, 68.37; H, 6.78. Found: C, 68.27; H, 6.86.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (8.0 g, 20.9 mmol) with trans-2-phenylvinylboronic acid (4.63 g, 31.3 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.82 g, 1.04 mmol), and potassium carbonate (7.21 g, 52.2 mmol) generally according to the procedure described for Intermediate 37 provided 6.59 g (78%) of (±)-{7-[(E)-2-phenylvinyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate as a light yellow solid. mp 120-122° C.; Anal. calcd. for C24H22O4S: C, 70.91; H, 5.45. Found: C, 70.78; H, 5.56.
- Treatment of (±)-1-[4-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (1.94 g, 7.03 mmol) with diisopropylethylamine (1.36 g, 10.55 mmol) followed by benzyl chloroformate (1.32 g, 7.74 mmol) generally according to the procedure described for Intermediate 12 provided 2.36 g (90%) of (±)-benzyl {[4-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate as a white solid. mp 134-136° C.; Anal. calcd. for C24H23NO3: C, 77.19; H, 6.21; N, 3.75. Found: C, 77.08; H, 6.3; N, 3.69.
- Treatment of (±)-1-{4-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine (2.21 g, 6.7 mmol) with diisopropylethylamine (1.3 g, 10.05 mmol) followed by benzyl chloroformate (1.25 g, 7.37 mmol) generally according to the procedure described for Intermediate 12 provided 2.6 g (91%) of (±)-benzyl({4-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)carbamate as a colorless oil. Anal. calcd. for C24H20F3NO3: C, 67.44; H, 4.72; N, 3.28. Found: C, 67.5; H, 4.7; N, 3.13. Chiral HPLC separation of (±)-benzyl ({4-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)carbamate (Chiralcel OJ, ethanol:hexane 1:1) provided two fractions. Fraction 1 (Rt=5.701 min, Chiralcel OJ, ethanol:hexane 1:1); Fraction 2 (Rt=7.122 min, Chiralcel OJ, ethanol:hexane 1:1).
- Fraction 1 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl ({4-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)carbamate (Rt=5.701 min, Chiralcel OJ, ethanol:hexane 1:1). [α]D 25=−61.46 (c 10.0 in methanol); Anal. calcd. for C24H20F3NO3: C, 67.44; H, 4.72; N, 3.28. Found C, 67.52; H, 4.67; N, 3.11.
- Fraction 2 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl ({4-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)carbamate (Rt=7.122 min, Chiralcel OJ, ethanol:hexane 1:1). [α]D 25=+60.44 (c 10.0 in methanol); Anal. calcd. for C24H20F3NO3: C, 67.44; H, 4.72; N, 3.28. Found C, 67.03; H, 4.62; N, 3.2.
- Treatment of (±)-(4-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.5 g, 3.32 mmol) with 2,6-dimethylphenylboronic acid (2.35 g, 15.66 mmol), tetrakis(triphenylphosphine)palladium(0) (0.452 g, 0.394 mmol), and barium hydroxide octahydrate (6.17 g, 19.57 mmol) generally according to the procedure described for Intermediate 50 provided 2.27 g (71%) of (±)-[4-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a colorless oil. Anal. calcd. for C24H24O4S: C, 70.56; H, 5.92. Found: C, 69.72; H, 5.87.
- Treatment of (±)-1-[4-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (1.2 g, 4.14 mmol) with diisopropylethylamine (0.803 g, 6.21 mmol) followed by benzyl chloroformate (0.848 g, 4.97 mmol) generally according to the procedure described for Intermediate 12 provided 1.52 g (95%) of (±)-benzyl {[4-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate as a colorless oil. Anal. calcd. for C25H25NO3: C, 77.49; H, 6.5; N, 3.61. Found: C, 76.66; H, 6.31; N, 3.44. Chiral HPLC separation of (±)-benzyl {[4-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Chiralcel OD, ethanol) provided two fractions. Fraction 1 (Rt=4.818 min, Chiralcel OD, ethanol); Fraction 2 (Rt=6.985 min, Chiralcel OD, ethanol).
- Fraction 1 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl {[4-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Rt=4.818 min, Chiralcel OD, ethanol). [α]D 25=+60.96 (c 10.0 in methanol); Anal. calcd. for C25H25NO3: C, 77.49; H, 6.5; N, 3.61. Found: C, 77.11; H, 6.26; N, 3.38.
- Fraction 2 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl {[4-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Rt=6.985 min, Chiralcel OD, ethanol). [α]D 25=−59.24 (c 10.0 in methanol); Anal. calcd. for C25H25NO3: C, 77.49; H, 6.5; N, 3.61. Found: C, 76.91; H, 6.37; N, 3.46.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with 3-thiopheneboronic acid (0.334 g, 2.61 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.051 g, 0.065 mmol), and potassium carbonate (0.45 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 provided 0.389 g (77%) of (±)-(7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a light yellow solid. mp 90-92° C.; Anal. calcd. for C20H18O4S2: C, 62.15; H, 4.69. Found: C, 62.2; H, 4.72.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (10.0 g, 26.10 mmol) with 2-(trifluoromethyl)phenylboronic acid (7.43 g, 39.12 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (1.02 g, 1.30 mmol), and potassium carbonate (9.01 g, 65.19 mmol) generally according to the procedure described for Intermediate 37 provided 8.46 g (75%) of (±)-{7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate as a tan solid. mp 116-118° C.; Anal. calcd. for C23H19F3O4S: C, 61.60; H, 4.27. Found: C, 61.91; H, 4.23.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (3.00 g, 7.83 mmol) with 3-chlorophenylboronic acid (1.84 g, 11.74 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.308 g, 0.391 mmol), and potassium carbonate (2.70 g, 19.57 mmol) generally according to the procedure described for Intermediate 37 provided 2.35 g (72%) of (±)-[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a tan solid. mp 100-103° C.; Anal. calcd. for C22H19ClO4S: C, 63.69; H, 4.62. Found: C, 63.43; H, 4.69.
- Fraction 1 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl {[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Rt=9.655 min, Chiralcel OJ, hexane:ethanol 1:1). [α]D 25=+10.48 (c 10.0 in methanol); Anal. calcd. for C23H20ClNO3: C, 70.14; H, 5.12; N, 3.56. Found C, 69.45; H, 4.92; N, 2.94.
- Fraction 2 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl {[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Rt=16.300 min, Chiralcel OJ, hexane:ethanol 1:1). [α]D 25=−9.64 (c 10.0 in methanol); Anal. calcd. for C23H20ClNO3: C, 70.14; H, 5.12; N, 3.56. Found C, 69.43; H, 5.06; N, 3.19.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with 3-methylphenylboronic acid (0.266 g, 1.96 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.051 g, 0.065 mmol), and potassium tert-butoxide (0.366 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 provided 0.358 g (70%) of (±)-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. mp 98-100° C.; Anal. calcd. for C23H22O4S: C, 70.03; H, 5.62. Found: C, 69.83; H, 5.61.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.500 g, 1.305 mmol) with 2-fluorophenylboronic acid (0.274 g, 1.96 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.051 g, 0.065 mmol), and potassium carbonate (0.45 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 provided 0.422 g (81%) of (±)-[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a yellow solid. mp 99-101° C.; Anal. calcd. for C22H19FO4S: C, 66.32; H, 4.81. Found: C, 65.16; H, 4.86.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (5.00 g, 13.04 mmol) with 2-methoxyphenylboronic acid (3.96 g, 26.09 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.532 g, 0.652 mmol), and potassium carbonate (4.5 g, 32.62 mmol) generally according to the procedure described for Intermediate 37 provided 3.63 g (68%) of (±)-[7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a yellow solid. mp 151-153° C.; Anal. calcd. for C23H22O5S: C, 67.3; H, 5.4. Found: C, 66.95; H, 5.43.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with 3-fluorophenylboronic acid (0.274 g, 1.96 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.051 g, 0.065 mmol), and potassium carbonate (0.45 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 provided 0.392 g (75%) of (±)-[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a light yellow solid. mp 88-90° C.; Anal. calcd. for C22H19FO4S: C, 66.32; H, 4.81. Found: C, 65.63; H, 4.84.
- Treatment of (±)-1-[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (798 g, 6,382.86 mmol) with diisopropylethylamine (0.554 g, 4.29 mmol) followed by benzyl chloroformate (0.536 g, 3.14 mmol) generally according to the procedure described for Intermediate 12 provided 1.01 g (94%) of (±)-benzyl {[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate as a white solid. Rf=0.41 (silica, ethyl acetate:hexanes 2:8); Anal. calcd. for C23H20FNO3: C, 73.2; H, 5.34; N, 3.71. Found: C, 72.96H, 5.38; N, 3.59. Chiral HPLC separation of (±)-benzyl {[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Chiralpak OD, isopropanol:hexane 2:8) provided two fractions. Fraction 1 (Rt=7.675 min, Chiralpak OD, isopropanol:hexane 2:8); Fraction 2 (Rt=9.182 min, Chiralpak OD, isopropanol:hexane 2:8).
- Fraction 1 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl {[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Rt=7.675 min, Chiralpak OD, isopropanol:hexane 2:8). [α]D 25=+41.76 (c 10.0 in methanol); Anal. calcd. for C23H20FNO3: C, 73.2; H, 5.34; N, 3.71. Found C, 73.01; H, 5.28; N, 3.75.
- Fraction 2 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl {[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Rt=9.182 min, Chiralpak OD, isopropanol:hexane 2:8). [α]D 25=−34.44 (c 10.0 in methanol); Anal. calcd. for C23H20FNO3: C, 73.2; H, 5.34; N, 3.71. Found C, 73.2; H, 5.39; N, 3.62.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (5.00 g, 13.05 mmol) with 3-methoxyphenylboronic acid (2.97 g, 19.57 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.512 g, 0.652 mmol), and potassium carbonate (4.51 g, 32.62 mmol) generally according to the procedure described for Intermediate 37 provided 4.48 g (84%) of (±)-[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. mp 141-142° C.; Anal. calcd. for C23H22O5S: C, 67.3; H, 5.4. Found: C, 66.51; H, 5.41.
- Treatment of (±)-1-[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (2.4 g, 9.4 mmol) with diisopropylethylamine (1.82 g, 14.10 mmol) followed by benzyl chloroformate (1.92 g, 11.28 mmol) generally according to the procedure described for Intermediate 12 provided 3.28 g (90%) of (±)-benzyl {[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate as a colorless oil. Rf=0.51 (silica, ethyl acetate:hexanes 2:8); Anal. calcd. for C24H23NO4: C, 74.02; H, 5.95; N, 3.6. Found: C, 73.52; H, 6.06; N, 3.28. Chiral HPLC separation of (±)-benzyl {[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Chiralpak OD, ethanol) provided two fractions. Fraction 1 (Rt=6.220 min, Chiralpak OD, ethanol); Fraction 2 (Rt=8.373 min, Chiralpak OD ethanol).
- Fraction 1 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl {[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Rt=6.220 min, Chiralpak OD, ethanol). [α]D 25=+26.94 (c 10.0 in methanol); Anal. calcd. for C24H23NO4: C, 74.02; H, 5.95; N, 3.6. Found: C, 73.48; H, 5.98; N, 3.46.
- Fraction 2 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl {[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Rt=8.373 min, Chiralpak OD ethanol). [α]D 25=−26.96 (c 10.0 in methanol); Anal. calcd. for C24H23NO4: C, 74.02; H, 5.95; N, 3.6. Found: C, 73.52; H, 6.01; N, 3.45.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with 3-chlorophenylboronic acid (0.306 g, 1.96 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.051 g, 0.065 mmol), and potassium carbonate (0.45 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 provided 0.404 g (75%) of (±)-[7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a light yellow solid. mp 101-103° C.; Anal. calcd. for C22H19ClO4S: C, 63.69; H, 4.62. Found: C, 63.59; H, 4.52.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (5.0 g, 13.05 mmol) with 3-(trifluoromethyl)phenylboronic acid (3.72 g, 19.57 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.512 g, 0.652 mmol), and potassium carbonate (4.5 g, 32.62 mmol) generally according to the procedure described for Intermediate 37 provided 5.28 g (90%) of (±)-{7-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate as a white solid. mp 90-93° C.; Anal. calcd. for C23H19F3O4S: C, 61.6; H, 4.27. Found: C, 61.52; H, 4.21.
- Treatment of (±)-1-{7-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine (1.67 g, 5.06 mmol) with diisopropylethylamine (0.98 g, 7.59 mmol) followed by benzyl chloroformate (1.04 g, 7.59 mmol) generally according to the procedure described for Intermediate 12 provided 2.1 g (97%) of (±)-benzyl({7-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)carbamate as a colorless oil. Anal. calcd. for C24H20F3NO3: C, 67.44; H, 4.72; N, 3.28. Found: C, 67.08; H, 5.05; N, 3.22. Chiral HPLC separation of (±)-benzyl ({7-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)carbamate (Chiralpak OJ, isopropanol:carbon dioxide 15:85) provided two fractions. Fraction 1 (Rt=6.12 min, Chiralpak OJ, isopropanol:carbon dioxide 15:85); Fraction 2 (Rt=7.17 min, Chiralpak OJ, isopropanol:carbon dioxide 15:85).
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (11.2 g, 29.22 mmol) with 4-methylphenylboronic acid (5.96 g, 43.84 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (1.15 g, 1.46 mmol), and potassium carbonate (10.10 g, 73.07 mmol) generally according to the procedure described for Intermediate 37 provided 9.8 g (85%) of (±)-[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. mp 145-147° C.; Anal. calcd. for C23H22O4S: C, 70.03; H, 5.62. Found: C, 69.91; H, 5.7.
- Treatment of (±)-1-[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (5.8 g, 24.24 mmol) with diisopropylethylamine (4.69 g, 36.35 mmol) followed by benzyl chloroformate (5.17 g, 30.30 mmol) generally according to the procedure described for Intermediate 12 provided 5.05 g (56%) of (±)-benzyl {[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate as a clear oil. Anal. calcd. for C24H23NO3: C, 77.19; H, 6.21; N, 3.75. Found: C, 76.97; H, 5.99; N, 3.68. Chiral HPLC separation of (±)-benzyl {[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Chiralpak OD, methanol:carbon dioxide 1:1) provided two fractions. Fraction 1 (Rt=3.735 min, Chiralpak OD, methanol:carbon dioxide 1:1); Fraction 2 (Rt=4.381 min, Chiralpak OD, methanol:carbon dioxide 1:1).
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with 4-fluorophenylboronic acid (0.274 g, 1.96 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.051 g, 0.065 mmol), and potassium carbonate (0.45 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 provided 0.408 g (78%) of (±)-[7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a light yellow solid. mp 83-86° C.; Anal. calcd. for C22H19FO4S: C, 66.32; H, 4.81. Found: C, 66.11; H, 4.61.
- Treatment of (+)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with 4-chlorophenylboronic acid (0.306 g, 1.96 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.051 g, 0.065 mmol), and potassium carbonate (0.45 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 provided 0.367 g (68%) of (±)-[7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as an orange solid. mp 130-133° C.; Anal. calcd. for C22H19ClO4S: C, 63.69; H, 4.62. Found: C, 62.82; H, 4.56.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with 4-(trifluoromethyl)phenylboronic acid (0.372 g, 1.96 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.051 g, 0.065 mmol), and potassium carbonate (0.45 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 provided 0.435 g (74%) of (±)-{7-[4-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate as a light yellow solid. mp 116-118° C.; Anal. calcd. for C23H19F3O4S: C, 61.6; H, 4.27. Found: C, 61.37; H, 4.36.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.0 g, 2.61 mmol) with 2,6-dimethylphenylboronic acid (0.783 g, 5.22 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.103 g, 0.131 mmol), and potassium carbonate (0.902 g, 6.52 mmol) generally according to the procedure described for Intermediate 37 provided 0.192 g (18%) of (±)-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a yellow oil. Anal. calcd. for C24H24O4S: C, 70.56; H, 5.92. Found: C, 68.01; H, 5.6.
- Treatment of (±)-1-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (0.947 g, 3.73 mmol) with diisopropylethylamine (0.725 g, 5.60 mmol) followed by benzyl chloroformate (0.765 g, 4.48 mmol) generally according to the procedure described for Intermediate 12 provided 1.26 g (87%) of (±)-benzyl {[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate as a colorless oil. Anal. calcd. for C25H25NO3: C, 77.49; H, 6.5; N, 3.61. Found: C, 77.42; H, 6.57; N, 3.62. Chiral HPLC separation of (±)-benzyl {[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Chiralcel OJ, methanol:carbon dioxide 4:6) provided two fractions. Fraction 1 (Rt=3.12 min, Chiralcel OJ, methanol:carbon dioxide 4:6); Fraction 2 (Rt=4.28 min, Chiralcel OJ methanol:carbon dioxide 4:6).
- Treatment of 2,6-difluorobromobenzene (8.9 g, 46.1 mmol) with 2-methoxybenzeneboronic acid (10.51 g, 69.2 mmol), dichlorobis(tri-o-tolylphosphine)palladium(II) (1.81 g, 2.3 mmol), and potassium carbonate (15.9 g, 115.3 mmol) generally according to the procedure described for Intermediate 37 provided 4.6 g (45%) of 2′,6′-difluoro-1,1′-biphenyl-2-yl methyl ether. To a solution of 2′,6′-difluoro-1,1′-biphenyl-2-yl methyl ether (4.5 g, 20.4 mmol) in dichloromethane (100 mL) cooled to −78° C. was added boron tribromide (5.11 g, 1.0 M in dichloromethane) and the reaction mixture was allowed to stir for 30 min. The reaction mixture was allowed to warm to room temperature and was quenched by the addition of ice (150 mL). The organic layer was separated and the aqueous layer was extracted with dichloromethane (500 mL). The combined organic layers were washed with water (400 mL), saturated aqueous sodium chloride (100 mL), dried (magnesium sulfate), and the solvent removed in vacuo to provide a crude oil. Purification by flash column chromatography (silica, hexanes:ethyl acetate 95:5) provided 3.95 g (94%) of 2′,6′-difluoro-1,1′-biphenyl-2-ol as a colorless oil. Anal. calcd. for C12H8F2O: C, 69.9; H, 3.91. Found: C, 68.51; H, 4.06.
- Treatment of 2′,6′-difluoro-1,1′-biphenyl-2-ol (3.8 g, 18.43 mmol) with potassium carbonate (10.19 g, 73.72 mmol) and allyl bromide (2.67 g, 22.11 mol), followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 provided 3-allyl-2′,6′-difluoro-1,1′-biphenyl-2-ol. Treatment of the 3-allyl-2′,6′-difluoro-1,1′-biphenyl-2-ol (3.41 g, 13.85 mmol) with 3-chloroperoxybenzoic acid (7.25 g, 41.54 mmol, 77%) followed by potassium carbonate (4.78 g, 34.62 mmol) generally according to the procedure described for Intermediate 9 afforded 3.5 g (72%) of (±)-[7-(2,6-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanol as an amber oil. Anal. calcd. for C15H12F2O2: C, 68.7; H, 4.61. Found C, 67.26; H, 4.5.
- Treatment of (±)-1-[7-(2,6-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (1.54 g, 5.17 mmol) with diisopropylethylamine (1.02 g, 7.76 mmol) and benzyl chloroformate (0.971 g, 5.69 mmol) generally according to the procedure described for Intermediate 12 gave 2.02 g (98%) of (±)-benzyl {[7-(2,6-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate as a colorless oil. Anal. calcd. for C23H19F2NO3: C, 69.87; H, 4.84; N, 3.54. Found C, 69.54; H, 4.87; N, 3.31.
- Treatment of 2,6-dichlorobromobenzene (25.0 g, 0.110 mol) with 2-methoxybenzeneboronic acid (25.22 g, 0.166 mol), dichlorobis(tri-o-tolylphosphine)palladium(II) (2.33 g, 2.96 mmol), and potassium carbonate (34.15 g, 0.247 mmol) generally according to the procedure described for Intermediate 37 provided 21.5 g (77%) of 2′,6′-dichloro-1,1′-biphenyl-2-yl methyl ether. Treatment of 2′,6′-dichloro-1,1′-biphenyl-2-yl methyl ether (19.0 g, 75.06 mmol) with boron tribromide (18.78 g, 1.0 M in dichloromethane) generally according to the procedure described for Intermediate 163 provided 17.89 g (99%) of 2′,6′-dichloro-1,1′-biphenyl-2-ol as a light yellow solid. mp 100-103° C.; Anal. calcd. for C12H8Cl2O: C, 60.28H, 3.37. Found: C, 60.29; H, 3.13.
- Treatment of 2′,6′-dichloro-1,1′-biphenyl-2-ol (17.95 g, 75.06 mmol) with potassium carbonate (41.38 g, 299.43 mmol) and allyl bromide (10.89 g, 90.08 mol), followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 provided 3-allyl-2′,6′-dichloro-1,1′-biphenyl-2-ol. Treatment of 3-allyl-2′,6′-dichloro-1,1′-biphenyl-2-ol (16.5 g, 59.10 mmol) with 3-chloroperoxybenzoic acid (30.59 g, 177.3 mmol, 77%) followed by potassium carbonate (20.41 g, 14.77 mmol) generally according to the procedure described for Intermediate 9 afforded 11.2 g (64%) of (±)-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanol. Treatment of (±)-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanol (11.2 g, 37.94 mmol) with p-toluenesulfonyl chloride (8.68 g, 45.53 mol) generally according to the procedure described for Intermediate 10 gave 15.2 g (89%) of (±)-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a yellow oil. Anal. calcd. for C22H18Cl2O4S: C, 58.8; H, 4.04. Found: C, 58.1; H, 4.05.
- Treatment of (±)-1-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (0.290 g, 0.877 mmol) with diisopropylethylamine (0.170 g, 1.315 mmol) followed by benzyl chloroformate (0.165 g, 0.965 mmol) generally according to the procedure described for Intermediate 12 provided 0.352 g (94%) of (±)-benzyl {[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate as a white solid. mp 198-200° C.; Anal. calcd. for C23H19Cl2NO3: C, 64.5; H, 4.47; N, 3.27. Found: C, 64.2; H, 4.43; N, 3.21. Chiral HPLC separation of (±)-benzyl {[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Chiralcel AD, ethanol:hexane 1:1) provided two fractions. Fraction 1 (Rt=5.174 min, Chiralcel AD, ethanol:hexane 1:1); Fraction 2 (Rt=6.229 min, Chiralcel AD, ethanol:hexane 1:1).
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (5.0 g, 13.05 mmol) with 2,4-dichlorophenylboronic acid (3.73 g, 19.57 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.512 g, 0.652 mmol), and potassium carbonate (4.51 g, 32.62 mmol) generally according to the procedure described for Intermediate 37 provided 4.5 g (75%) of (±)-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a yellow oil. Anal. calcd. for C22H18Cl2O4S: C, 58.8; H, 4.04. Found: C, 59.01; H, 4.09.
- Treatment of (±)-1-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (1.9 g, 5.75 mmol) with diisopropylethylamine (1.11 g, 8.62 mmol) followed by benzyl chloroformate (1.18 g, 6.89 mmol) generally according to the procedure described for Intermediate 12 gave 2.14 g (87%) of (±)-benzyl {[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate as a white solid. mp 87-89° C.; Anal. calcd. for C23H19Cl2NO3: C, 64.5; H, 4.47; N, 3.27. Found: C, 64.65; H, 4.78; N, 3.08. Chiral HPLC separation of (±)-benzyl {[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Chiralcel AD, methanol:water 95:5) provided two fractions. Fraction 1 (Rt=8.094 min, Chiralcel AD, methanol:water 95:5); Fraction 2 (Rt=9.152 min, Chiralcel AD methanol:water 95:5).
- Fraction 1 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl {[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Rt=8.094 min, Chiralcel AD, methanol:water 95:5). [α]D 25=+14.36 (c 10.0 in methanol); Anal. calcd. for C23H19Cl2NO3: C, 64.5; H, 4.47; N, 3.27. Found: C, 64.71; H, 4.76; N, 3.34.
- Fraction 2 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl {[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Rt=9.152 min, Chiralcel AD methanol:water 95:5). [α]D 25=−14.66 (c 10.0 in methanol); Anal. calcd. for C23H19Cl2NO3: C, 64.5; H, 4.47; N, 3.27. Found: C, 63.95; H, 4.68; N, 3.27.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (5.0 g, 13.05 mmol) with 2,4-dimethoxyphenylboronic acid (3.56 g, 19.57 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.512 g, 0.652 mmol), and potassium carbonate (4.5 g, 32.62 mmol) generally according to the procedure described for Intermediate 37 provided 3.3 g (57%) of (±)-[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a light yellow solid. mp 120-123° C.; Anal. calcd. for C24H24O6S: C, 65.44; H, 5.49. Found: C, 64.99; H, 5.46.
- Treatment of (±)-1-[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (1.42 g, 4.41 mmol) with diisopropylethylamine (0.855 g, 6.62 mmol) followed by benzyl chloroformate (0.828 g, 4.85 mmol) generally according to the procedure described for Intermediate 12 provided 1.58 g (85%) of (±)-benzyl {[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate as a colorless oil. Anal. calcd. for C25H25NO5: C, 71.58; H, 6.01; N, 3.34. Found: C, 71.24; H, 5.92; N, 3.09. Chiral HPLC separation of (±)-benzyl {[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Chiralcel OD, ethanol) provided two fractions. Fraction 1 (Rt=5.107 min, Chiralcel OD, ethanol); Fraction 2 (Rt=6.134 min, Chiralcel OD, ethanol).
- Fraction 1 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl {[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Rt=5.107 min, Chiralcel OD, ethanol). [α]D 25=+21.96 (c 10.0 in methanol); Anal. calcd. for C25H25NO5: C, 71.58; H, 6.01; N, 3.34. Found: C, 70.12; H, 6.11; N, 3.12.
- Fraction 2 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl {[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Rt=6.134 min, Chiralcel OD, ethanol). [α]D 25=−23.20 (c 10.0 in methanol); Anal. calcd. for C25H25NO5: C, 71.58; H, 6.01; N, 3.34. Found: C, 70.22; H, 6.1; N, 3.28.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (5.0 g, 13.05 mmol) with 2,4-difluorophenylboronic acid (3.09 g, 19.57 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.512 g, 0.651 mmol), and potassium carbonate (4.51 g, 32.62 mmol) generally according to the procedure described for Intermediate 37 afforded 4.43 g (82%) of (±)-[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. mp 116-118° C.; Anal. calcd. for C22H18F2O4S: C, 63.45; H, 4.36. Found: C, 63.3; H, 4.11.
- Treatment of (±)-1-[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (2.0 g, 6.72 mmol) with diisopropylethylamine (1.30 g, 10.07 mmol) followed by benzyl chloroformate (1.26 g, 7.37 mmol) generally according to the procedure described for Intermediate 12 gave 2.14 g (81%) of (±)-benzyl {[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate as a white solid. mp 78-80° C.; Anal. calcd. for C23H19F2NO3: C, 69.87; H, 4.84; N, 3.54. Found: C, 69.76; H, 4.8; N, 3.35. Chiral HPLC separation of (±)-benzyl {[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Chiralpak AD, ethanol:hexane 1:1) provided two fractions. Fraction 1 (Rt=9.117 min, Chiralpak AD, ethanol:hexane 1:1); Fraction 2 (Rt=9.424 min, Chiralpak AD ethanol:hexane 1:1).
- Fraction 1 obtained as a colorless oil from the chiral HPLC separation of (+)benzyl {[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Rt=9.117 min, Chiralpak AD, ethanol:hexane 1:1). [α]D 25=+13.0 (c 10.0 in methanol); Anal. calcd. for C23H19F2NO3: C, 69.87; H, 4.84; N, 3.54. Found: C, 69.28; H, 5.23; N, 3.47.
- Fraction 2 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl {[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Rt=9.424 min, Chiralpak AD ethanol:hexane 1:1). [α]D 25=−13.68 (c 10.0 in methanol); Anal. calcd. for C23H19F2NO3: C, 69.87; H, 4.84; N, 3.54. Found: C, 69.65; H, 5.06; N, 3.57.
- Treatment of 2-bromo-5-chlorotoluene (5.0 g, 24.33 mmol) with 2-methoxybenzeneboronic acid (4.8 g, 31.63 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.478 g, 0.608 mmol), and potassium carbonate (8.41 g, 60.83 mmol) generally according to the procedure described for Intermediate 37 provided 5.05 g (89%) of 4′-chloro-2′-methyl-1,1′-biphenyl-2-yl methyl ether. Treatment of 4′-chloro-2′-methyl-1,1′-biphenyl-2-yl methyl ether (5.05 g, 21.48 mmol) with boron tribromide (5.37 g, 1.0 M in dichloromethane) generally according to the procedure described for Intermediate 163 provided 4.58 g (97%) of 4′-chloro-2′-methyl-1,1′-biphenyl-2-ol as a yellow oil. Anal. calcd. for C13H11ClO: C, 71.4; H, 5.07. Found: C, 71.03; H, 4.84.
- Treatment of 4′-chloro-2′-methyl-1,1′-biphenyl-2-ol (4.54 g, 20.78 mmol) with potassium carbonate (11.47 g, 83.04 mmol) and allyl bromide (3.01 g, 24.91 mol), followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 provided 3-allyl-4′-chloro-2′-methyl-1,1′-biphenyl-2-ol. Treatment of 3-allyl-4′-chloro-2′-methyl-1,1′-biphenyl-2-ol (4.5 g, 17.39 mmol) with 3-chloroperoxybenzoic acid (12.0 g, 69.57 mmol, 77%) followed by potassium carbonate (6.0 g, 43.48 mmol) generally according to the procedure described for Intermediate 9 afforded 2.9 g (61%) of (±)-[7-(4-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanol as a colorless oil. Anal. calcd. for C16H15ClO2: C, 69.95; H, 5.5. Found: C, 69.23; H, 5.42.
- Treatment of (±)-[7-(4-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanol (2.78 g, 10.11 mmol) with p-toluenesulfonyl chloride (2.31 g, 12.14 mol) generally according to the procedure described for Intermediate 10 gave 4.04 g (93%) of (±)-[7-(4-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a yellow oil. Anal. calcd. for C23H21ClO4S: C, 64.4; H, 4.93. Found: C, 64.24; H, 4.93.
- Fraction 1 obtained as a white solid from the chiral HPLC separation of 7-bromo-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (Rt=6.220 min, Chiraicel AD, ethanol). [α]D 25=+23.4 (c 10.0 in methanol); mp 96-99° C.
- Fraction 2 obtained as a white solid from the chiral HPLC separation of 7-bromo-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (Rt=6.220 min, Chiraicel AD, ethanol). [α]D 25=−22.00 (c 10.0 in methanol); mp 96-99° C.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with (2,3-dimethylphenyl)boronic acid (0.294 g, 1.96 mmol) generally according to the procedure described for Intermediate 184 provided 0.335 g (62%) of (±)-[7-(2,3-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Rf=0.43 (silica, ethyl acetate:hexanes 1:4).
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.783 mmol) with (2,3-dimethoxylphenyl)boronic acid (0.427 g, 2.35 mmol) generally according to the procedure described for Intermediate 184 provided 0.283 g (82%) of (±)-[7-(2,3-dimethoxylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Rf=0.43 (silica, ethyl acetate:hexanes 1:4).
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with (2,3-difluorophenyl)boronic acid (0.618 g, 3.91 mmol) generally according to the procedure described for Intermediate 184 provided 0.090 g (77%) of (±)-[7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Rf=0.43 (silica, ethyl acetate:hexanes 1:4).
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with (2,5-dimethylphenyl)boronic acid (0.294 g, 1.96 mmol) generally according to the procedure described for Intermediate 184 provided 0.430 g (81%) of (±)-[7-(2,5-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Rf=0.43 (silica, ethyl acetate:hexanes 1:4).
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with (2,5-difluorophenyl)boronic acid (0.309 g, 1.96 mmol) generally according to the procedure described for Intermediate 184 provided 0.360 g (66%) of (±)-[7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Rf=0.43 (silica, ethyl acetate:hexanes 1:4).
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.43 g, 3.73 mmol) with (2,5-dichlorophenyl)boronic acid (1.07 g, 5.59 mmol) generally according to the procedure described for Intermediate 184 provided 1.49 g (88%) of (±)[7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Rf=0.43 (silica, ethyl acetate:hexanes 1:4.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with (2,5-dimethoxyphenyl)boronic acid (0.356 g, 1.96 mmol) generally according to the procedure described for Intermediate 184 provided 0.291 g (51%) of (±)-[7-(2,5-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Rf=0.43 (silica, ethyl acetate:hexanes 1:4).
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with (5-chloro-2-methylphenyl)boronic acid (0.334 g, 1.96 mmol) generally according to the procedure described for Intermediate 184 provided 0.451 g (81%) of (+)-[7-(5-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Rf=0.43 (silica, ethyl acetate:hexanes 1:4).
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with (5-chloro-2-methoxyphenyl)boronic acid (0.365 g, 1.96 mmol generally according to the procedure described for Intermediate 184 provided 0.382 g (66%) of (±)-[7-(5-chloro-2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Rf=0.43 (silica, ethyl acetate:hexanes 1:4).
- Treatment of 2,4,6-trichlorobromobenzene (14.5 g, 55.69 mmol) with 2-methoxybenzeneboronic acid (12.69 g, 83.54 mol), dichlorobis(tri-o-tolylphosphine)palladium(II) (0.656 g, 0.835 mmol), and potassium carbonate (19.21 g, 139.22 mmol) generally according to the procedure described for Intermediate 37 provided 9.8 g (61%) of 2′,4′,6′-trichloro-1,1′-biphenyl-2-yl methyl ether. To a solution of 2′,4′,6′-trichloro-1,1′-biphenyl-2-yl methyl ether (9.8 g, 34.08 mmol) in dichloromethane (100 mL) cooled to −78° C. was added boron tribromide (9.38 g, 1.0 M in dichloromethane) generally according to the procedure described for Intermediate 163 provided 9.2 g of a yellow solid. Treatment of 2′,4′,6′-trichloro-1,1′-biphenyl-2-ol (9.17 g, 33.52 mmol) with potassium carbonate (18.53 g, 134.1 mmol) and allyl bromide (4.46 g, 36.87 mol), followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 provided 3-allyl-2′,4′,6′-trichloro-1,1′-biphenyl-2-ol. Treatment of 3-allyl-2′,4′,6′-trichloro-1,1′-biphenyl-2-ol. (10.35 g, 33.00 mmol) with 3-chloroperoxybenzoic acid (17.08 g, 99.00 mmol, 77%) followed by potassium carbonate (11.40 g, 82.51 mmol) generally according to the procedure described for Intermediate 9 afforded 10.4 g (95%) of (±)-[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanol. Treatment of (±)-[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanol (10.38 g, 31.49 mmol) with p-toluenesulfonyl chloride (7.20 g, 37.79 mol) generally according to the procedure described for Intermediate 10 gave 10.5 g (68%) of (±)-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. mp 178-180° C.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (4.0 g, 10.44 mmol) with pyridin-3-ylboronic acid (3.85 g, 31.31 mmol), tetrakis tri-phenylphosphine palladium (0.362 g, 0.052 mmol), and potassium carbonate (3.61 g, 26.09 mmol) generally according to the procedure described for Intermediate 184 provided 2.47 g (62%) of (±)-(7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonates a light yellow solid. Rf=0.43 (silica, ethyl acetate:hexanes 1:4).
- To a solution of 2-nitrophenol (13.9 g, 100 mmol) in N,N-dimethylformamide (300 mL) was added with sodium hydride (4.2 g, 100 mmol 60%) followed by allyl bromide (13.3 g, 110 mmol) and the reaction was allowed to stir at room temperature for 2 hours The reaction mixture was diluted with water (500 mL) to dissolve any solids and extracted with ethyl acetate (3×250 mL). The combined organic layers were washed with water (4×500 mL), saturated aqueous sodium chloride (400 mL), dried (magnesium sulfate) and the solvent removed in vacuo to give 1-(allyloxy)-2-nitrobenzene. The oil was re-dissolved in mesitylene (500 mL) and heated at reflux for 3 d. Removal of the solvent in vacuo provided a crude oil. Purification by flash column chromatography (silica, dichloromethane:hexanes 0.5:9.5) provided 6.8 g, (50%) of 2-allyl-6-nitrophenol as a yellow oil. To a solution of 2-allyl-6-nitrophenol (6.6 g, 36.84 mmol) in dichloromethane (300 mL) was added 3-chloroperoxybenzoic acid (77%, 16.5 g, 73.67 mmol) The reaction mixture was allowed to stir at room temperature for 8 h. The reaction mixture was washed with a 1:1 solution of 10% sodium sulfite:saturated sodium bicarbonate (2×300 mL). The solvent was removed in vacuo to give crude yellow oil. The oil was diluted with methanol (300 mL) and added to a solution of potassium carbonate (15.0 g, 108.5 mmol) the solution was allowed to stir at room temperature 2 h. The solvent was removed in vacuo. The residue was washed with water (1000 mL) and ethyl acetate (500 mL). The aqueous layer was acidified with 1 N aqueous hydrogen chloride and washed with ethyl acetate (500 mL). The combined organics were washed with water (500 mL), saturated aqueous sodium chloride (500 mL), dried (magnesium sulfate) and the solvent removed in vacuo to provide a crude solid. Purification by flash column chromatography (silica, dichloromethane:hexanes 4:10) provided 3.18 g (44%) of (±)-(7-nitro-2,3-dihydro-1-benzofuran-2-yl)methanol as yellow solid. mp 63-65° C.
- To a solution of (±)-(7-nitro-2,3-dihydro-1-benzofuran-2-yl)methanol (3.14 g, 16.09 mol) in dichloromethane (100 mL) was added diisopropylethyl amine (4.16 g, 32.18 mmol), N,N-dimethylaminopyridine (0.39 g, 3.2 mmol), and p-toluenesulfonyl chloride (4.6 g, 24.13 mmol) the reaction was allowed to stir at room temperature for 12 h. The reaction was diluted with dichloromethane (500 mL), washed with saturated aqueous sodium bicarbonate (200 mL), saturated aqueous sodium chloride (200 mL), dried (magnesium sulfate) and the solvent removed in vacuo to give a crude oil. Purification by flash column chromatography (silica, dichloromethane:hexanes 3:10) afforded 5.2 g (94%) of (±)-(7-nitro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as off-white solid. mp 129-131° C.
- A solution of (±)-(7-amino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (4.8 g, 13.74 mmol) in ethanol (400 mL) and palladium on carbon (1.4 g, 5 wt. %) was shaken under an H2 atmosphere (50 psi) for 12 h. The reaction mixture was filtered (celite) and the solvent removed in vacuo provided 4.4 g (99%) of (±)-(7-amino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a light brown oil.
- Treatment of (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) in toluene (20 mL) with 1-bromo-4-methylbenzene (0.513 g, 30 mmol) dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II) dichloromethane (0.061 g, 0.075 mmol), 1,1′-bis(diphenylphosphino)ferrocene (0.125 g, 0.225 mmol), sodium tert-butoxide (0.18 g, 1.875 mmol) the reaction was allowed to reflux 3 h. The solvent was removed in vacuo. The residue was washed with water (100 mL) and ethyl acetate (50 mL). The combined organic layers were washed with saturated aqueous sodium chloride, dried (magnesium sulfate), and the solvent removed in vacuo to provide a crude oil. Purification by flash column chromatography (silica, ethyl acetate:hexanes 3:10) afforded 0.36 g (29%) of (±)-{7-[(4-methylphenyl)amino]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate as a yellow solid. mp 118-120° C.
- Treatment of (±)-(7-amino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) with 1-bromo-4-chlorobenzene (0.570 g, 3.0 mmol) generally according to the procedure described for Intermediate 37 provided 0.77 g (57%) of (+)-{7-[(4-chlorophenyl)amino]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate as a white solid. mp 132-134° C.
- Treatment of (±)-(7-amino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) with 4-bromo-1,2-dimethylbenzene (0.558 g, 3.0 mmol), generally according to the procedure described for Intermediate 202 provided 0.51 g (38%) (±)-{7-[(3,4-dimethylphenyl)amino]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate as a yellow solid. mp 88-90° C.
- Intermediate 204
- Treatment of (±)-benzyl[7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (2.7 g, 8.39 mmol) with diisopropylethylamine (1.63 g, 12.59 mmol) and benzyl chloroformate (1.72 g, 10.07 mmol) generally according to the procedure described for Intermediate 12 provided 3.21 g (91%) of (±)-benzyl {[7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate as a colorless oil.
- Treatment of (±)-benzyl[7-(4-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (0.979 g, 3.15 mmol) with diisopropylethylamine (0.612 g, 4.73 mmol) and benzyl chloroformate (0.646 g, 3.79 mmol) generally according to the procedure described for Intermediate 12 provided 1.2 g (96%) of (+)-benzyl[7-(4-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]carbamate as a colorless oil.
- Fraction 1 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl[7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]carbamate (Rt=7.725 min, Chiralcel AD, ethanol:hexane 1:1). [α]D 25=+12.8 (c 10.0 in methanol).
- Fraction 2 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl[7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]carbamate (Rt=9.542 min, Chiralcel AD, ethanol:hexane 1:1). [α]D 25=−4.8 (c 10.0 in methanol).
- Fraction 1 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl[7-(2,6-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]carbamate (Rt=4.340 min, Chiralcel AD, isopropanol:hexane 2:8). [α]D 25=+18.8 (c 10.0 in methanol).
- Fraction 2 obtained as a colorless oil from the chiral HPLC separation of (+)benzyl[7-(2,6-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]carbamate (Rt=5.251 min, Chiralcel AD, isopropanol:hexane 2:8). [α]D 25=−16.8 (c 10.0 in methanol).
- Treatment of (±)-benzyl[7-(4-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (3.1 g, 11.32 mmol) with diisopropylethylamine (2.19 g, 16.98 mmol) and benzyl chloroformate (2.37 g, 12.45 mmol) generally according to the procedure described for Intermediate 12 provided 4.12 g (89%) of (±)-benzyl {[7-(5-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate as a colorless oil.
- Treatment of (±)-benzyl[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (2.83 g, 8.61 mmol) with diisopropylethylamine (1.67 g, 12.92 mmol) and benzyl chloroformate (1.76 g, 10.33 mmol) generally according to the procedure described for Intermediate 12 provided 3.46 g (87%) of (±)-benzyl {[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate as a colorless oil.
- Treatment of (±)-1-(7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl)methanamine (0.770 g, 3.40 mmol) with diisopropylethylamine (0.660 g, 5.1 mmol) and benzyl chloroformate (0.778 g, 4.08 mmol) generally according to the procedure described for Intermediate 12 provided 0.702 g (57%) of (±)-benzyl[(7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]carbamate as an amber oil.
- Treatment of (±)-[(N-methyl-1-[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (0.932 g, 3.4 mmol) with diisopropylethylamine (0.66 g, 5.11 mmol) and benzyl chloroformate (0.778 g, 4.08 mmol) generally according to the procedure described for Intermediate 12 provided 1.25 g (86%) of (±)-benzyl {[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate as a colorless oil.
- Treatment of (±)-[(N-methyl-1-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (0.67 g, 32.64 mmol) with diisopropylethylamine (0.512 g, 3.97 mmol) and benzyl chloroformate (0.605 g, 3.17 mmol) generally according to the procedure described for Intermediate 12 provided 0.790 g (77%) of (±)-benzyl {[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate as a colorless oil.
- Treatment of (±)-[(N-methyl-1-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (1.1 g, 3.57 mmol) with diisopropylethylamine (0.69 g, 5.35 mmol) and benzyl chloroformate (0.0.82 g, 4.28 mmol) generally according to the procedure described for Intermediate 12 provided 1.6 g (99%) of (±)-benzyl {[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate as a colorless oil.
- Treatment of (±)-(7-bromo-2,3-dihydro-benzofuran-2-ylmethyl)carbamate (0.80 g, 2.21 mmol) with pyridine-3-boronic acid (0.407 g, 3.31 mmol) generally according to the procedure described for Intermediate 37 provided 0.213 g (27%) of (±)-benzyl {[7-pyridine-3-yl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate as a colorless oil.
- Treatment of (±)-(7-bromo-2,3-dihydro-benzofuran-2-ylmethyl)carbamate (1.3 g, 3.59 mmol) with 2,3-dichlorophenylboronic acid (1.03 g, 5.38 mmol) generally according to the procedure described for Intermediate 37 provided 0.93 g (63%) of (±)-benzyl{[7-(2,3-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate as a yellow oil.
- Treatment of (±)-(7-bromo-2,3-dihydro-benzofuran-2-ylmethyl)carbamate (3.2 g, 8.83 mmol) with 2,5-dichlorophenylboronic acid (2.54 g, 13.24 mmol) generally according to the procedure described for Intermediate 37 provided 0.299 g (27%) of (±)-benzyl {[7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate as a yellow oil.
- Treatment of (±)-{[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine (1.1 g, 3.57 mmol) with diisopropylethylamine (0.69 g, 5.35 mmol) and benzyl chloroformate (0.0.82 g, 4.28 mmol) generally according to the procedure described for Intermediate 12 provided 1.6 g (99%) of (±)-benzyl {[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate as a colorless oil.
- Treatment of (±)-N-methyl-1-[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (1.1 g, 3.57 mmol) with diisopropylethylamine (0.69 g, 5.35 mmol) and benzyl chloroformate (0.0.82 g, 4.28 mmol) generally according to the procedure described for Intermediate 12 provided 1.6 g (99%) of (±)-benzyl methyl{[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate as a colorless oil.
- Fraction 1 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl {[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate. [α]D 25=+7.8 (c 10.0 in methanol).
- Fraction 1 obtained as a colorless oil from the chiral HPLC separation of (±)-benzyl {[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate. [α]D 25=−6.2 (c 10.0 in methanol).
- Treatment of (±)-[7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methanol (3.59 g, 12.1 mmol) with p-toluenesulfonyl chloride (3.6 g, 18.2 mmol) generally according to described for Intermediate 10 provided 3.82 g (70%) (±)-[7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate. mp 95-97° C.
- Treatment of (−)-[7-bromo-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (2.0 g, 5.22 mmol) with 2-methylphenylboronic acid (1.06 g, 7.83 mmol) generally according to described for Intermediate 37 provided 1.71 g (83%) (−)-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate. [α]D 25=−44.6 (c 10.0 in methanol).
- To a solution of 4-fluoro-2-bromanisole (12.6 ml, 0.1 mol) in anhydrous tetrahydrofuran at −78° C. was added n-butyllithium (39 ml, 2.5 M in hexane) and the resulting mixture was allowed to stir at −78° C. for 3 h. Copper(I) bromide-dimethylsulfide (10.0 g, 0.05 mol) was then added at −78° C. and the reaction mixture was allowed to warm to −40° C. over 2 h. Benzyl(S)-(+)-glycidyl ether (3.71 ml, 0.025 mol) was added at −60° C. followed by boron trifluoride diethyl etherate (0.15 ml, 1.2 mmol) and the reaction mixture was allowed to warm to room temperature over 12 h. The solvent was removed in vacuo and purification by flash column chromatography (silica, ethyl acetate:hexanes 3:7) afforded 5.0 g (70%) of (S)-1-benzyloxy-3-(5-fluoro-2-methoxy-phenyl)propan-2-ol as a colorless oil. HRMS ESI m/e 308.1666 [M+NH4]+, Calc'd m/e 308.1662 [M+NH4]+; [α]D 25=+8.1 (c 0.89% in methanol).
- Treatment of 4-chloro-2-bromanisole (21.5 g, 0.1 mol) generally according to the procedure described for Intermediate 225 provided 5.1 g (67%) of (S)-1-benzyloxy-3-(5-chloro-2-methoxy-phenyl)propan-2-ol as a colorless oil. HRMS ESI m/le 307.1096 [M+H]+, Calc'd 307.1101; [α]D 25=+6.6 (c 1% in methanol).
- Treatment of 2-bromo-4-methylanisole (14.05 ml, 0.1 mol) generally according to the procedure described for Intermediate 225 afforded 6.74 g (96%) of (S)-1-benzyloxy-3-(2-methoxy-5-methyl-phenyl)propan-2-ol as a colorless oil. HRMS EI n/e 286.1565 (M)+, Calc'd. 286.1569; [α]D 25=+15.67 (c 9.57 in methanol).
- Treatment of 2-bromoanisole (12.1 ml, 0.1 mol) generally according to the procedure described for Intermediate 225 gave 5.4 g (82%) of (S)-1-benzyloxy-3-(2-methoxyphenyl)propan-2-ol as a colorless oil. HRMS EI m/e 272.1413 (M)+, Calc'd. 272.1412. [α]D 25=+18.07 (c 7.86 in methanol).
- To a solution of 3-bromo-2′,6′-dichloro-5-fluoro-2-methoxy-biphenyl (2.2 g, 6.3 mmol) in anhydrous tetrahydrofuran at 0° C. was added isopropylmagnesium chloride (3.45 ml, 2.0 M in hexane) and the resulting mixture was allowed to stir at 0° C. for 4 h. The reaction mixture was cooled to −30° C. and copper(I) cyanide (0.28 g, 3.1 mmol) in tetrahydrofuran was added and the reaction mixture was allowed to stir at −30° C. for 1 h. Benzyl(S)-(+)-glycidyl ether (0.48 ml, 3.1 mmol) was then added at −30° C. and the reaction mixture was allowed to warm to room temperature for 12 h. The solvent was removed in vacuo and purification by flash column chromatography (silica, ethyl acetate:hexanes 3:7) provided 1.28 g (94%) of (S)-1-benzyloxy-3-(2′,6′-dichlor-5-fluoro-2-methoxybiphenyl-3-yl)propan-2-ol as a colorless oil. HRMS ESI m/e 435.0946 [M−H]−, Calc'd 435.0930; [α]D 25=+2.8 (c 8.14 in dimethylsulfoxide).
- A solution of (S)-1-benzyloxy-3-(5-fluoro-2-methoxy-phenyl)propan-2-ol (5.17 g, 17.8 mmol) in hydrogen bromide (40 ml, 30 wt. % in acetic acid) was heated to 70° C. and allowed to stir for 12 h. The solvent was removed in vacuo and the residue was dissolved in dichloromethane and washed with ammonium hydroxide. The solvent was removed in vacuo and purification by flash column chromatography (silica, ethyl acetate:hexanes 3:7) afforded 3.60 g (70%) of (1S)-2-bromo-1-(5-fluoro-2-hydroxybenzyl)ethyl acetate as a light brown oil. Elemental Analysis for: C11H12BrFO3 Theory: C, 45.38H, 4.15 Found: C, 45.24H, 4.09.
- Treatment of (S)-1-benzyloxy-3-(5-chloro-2-methoxy-phenyl)propan-2-ol (5.4 g, 17.6 mmol) generally according to the procedure described for Intermediate 230 gave 3.8 g (70%) of (1S)-2-bromo-1-(5-chloro-2-hydroxybenzyl)ethyl acetate as a light brown oil. HRMS EI m/e 305.9647 (M)+.
- Treatment of (S)-1-benzyloxy-3-(2-methoxy-5-methyl-phenyl)propan-2-ol (6.7 g, 23.3 mmol) generally according to the procedure described for Intermediate 230 provided 6.24 g (93%) of (1S)-2-bromo-1-(2-hydroxy-5-methylbenzyl)ethyl acetate as a yellow oil. MS EI m/e 286 (M)+; [α]D 25=−2.41 (c 8.29 in methanol).
- Treatment of (S)-1-benzyloxy-3-(2-methoxy-phenyl)propan-2-ol (5.40 g, 19.8 mmol) generally according to the procedure described for Intermediate 230 provided 3.42 g (63%) of (1S)-2-bromo-1-(2-hydroxybenzyl)ethyl acetate as a yellow oil. [α]D 25=−12.2 (c 1% in methanol). Elemental Analysis for: C16H15BrO3 Theory: C, 48.37H, 4.80 Found: C, 48.48H, 4.78.
- Treatment of (S)-1-benzyloxy-3-(2′,6′-dichlor-5-fluoro-2-methoxybiphenyl-3-yl)propan-2-ol (1.28 g, 2.9 mmol) generally according to the procedure described for Intermediate 230 provided 1.12 g (80%) of 3-[(2S)-2-(acetyloxy)-3-bromopropyl]-2′,6′-dichloro-5-fluorobiphenyl-2-yl acetate as a light yellow oil. HRMS ESI m/e 476.9686 [M+H]+, Calc'd. 476.9671; [α]D 25=+13.2 (c 1% in methanol).
- To a solution of (1S)-2-bromo-1-(5-fluoro-2-hydroxybenzyl)ethyl acetate (3.57 g, 12.2 mmol) in methanol was added hydrogen chloride (1.0 M in diethylether, 49 ml) and the reaction mixture was allowed to stir at room temperature for 12 h. The solvent was removed in vacuo and purification by flash column chromatography (silica, ethyl acetate:hexanes 3:7) afforded 2.95 g (97%) of (S)-2-(3-bromo-2-hydroxy-propyl)-4-fluoro-phenol as a colorless oil. HRMS ESI nm/e 246.9761 [M−H]+; Calc'd 246.9755. [α]D 25=+8.2° (c 0.71% in methanol).
- Treatment of (1S)-2-bromo-1-(5-chloro-2-hydroxybenzyl)ethyl acetate (2.47 g, 3.2 mmol) generally according to the procedure described for Intermediate 235 gave 1.68 g (79%) of (S)-2-(3-bromo-2-hydroxy-propyl)-4-chloro-phenol as a yellow oil. [α]D 25=+9.8° (c 1% in methanol), HRMS EI m/e 263.956 (M)+.
- Treatment of (1S)-2-bromo-1-(2-hydroxy-5-methylbenzyl)ethyl acetate (6.24 g, 22 mmol) generally according to the procedure described for Intermediate 235 afforded 5.0 g (94%) of (S)-2-(3-bromo-2-hydroxy-propyl)-4-methyl-phenol as a colorless oil. [α]D 25=+13.8 (c 1% in methanol), HRMS ESI m/e 243.0020 [M−H]−, Calc'd. 243.0021.
- Treatment of (1S)-2-bromo-1-(2-hydroxybenzyl)ethyl acetate (3.42 g, 12.5 mmol) generally according to the procedure described for Intermediate 235 provided 2.71 g (93%) of (S)-2-(3-bromo-2-hydroxy-propyl)-phenol as a light yellow oil. MS ES m/e 229.0 [M−H]−; [α]D 25=+16.46 (c 8.14 in methanol).
- Treatment of 3-[(2S)-2-(acetyloxy)-3-bromopropyl]-2′,6′-dichloro-5-fluorobiphenyl-2-yl acetate (1.6 g, 33.4 mmol) generally according to the procedure described for Intermediate 235 gave 1.48 g (99%) of (S)-3-(3-bromo-2-hydroxy-propyl)-2′,6′-dichloro-5-fluoro-biphenyl-2-ol as a light yellow oil. HRMS EI m/e 391.9391 (M)+, Calc'd. 391.9391; [α]D 25=−4.76 (c 7.14 in methanol).
- Treatment of (S)-2-(3-bromo-2-hydroxy-propyl)-4-fluoro-phenol (1.97 g, 8 mmol), triphenylphosphine (5.2 g, 20 mmol), and diethylazodicarboxylate (3.11 ml, 20 mmol) generally according to the procedure described for Intermediate 18 afforded 1.40 g (76%) of (R)-2-bromomethyl-5-fluoro-2,3-dihydro-benzofuran as a colorless oil. HRMS ESI m/e 228.9661 [M−H]−. [α]D 25=−33.0 (c 1% in methanol).
- Treatment of (S)-2-(3-bromo-2-hydroxy-propyl)-4-methyl-phenol (5.0 g, 20 mmol) generally according to the procedure described for Intermediate 18 gave 3.04 g (70%) of (R)-2-bromomethyl-5-methyl-2,3-dihydro-benzofuran as a yellow oil. HRMS EI m/e 225.9998 (M)+; [α]D 25=−41.13 (c 8.86 in methanol).
- Treatment of (S)-2-(3-bromo-2-hydroxy-propyl)-phenol (2.71 g, 12 mmol) generally according to the procedure described for Intermediate 18 provided 1.62 g (65%) of (R)-2-bromomethyl-2,3-dihydro-benzofuran as a yellow oil. [α]D 25=−37 (c 1% in methanol); HRMS EI m/e 211.9840 (M)+, Calc'd. 211.9837.
- Treatment of (S)-3-(3-bromo-2-hydroxy-propyl)-2′,6′-dichloro-5-fluoro-biphenyl-2-ol (1.48 g, 3.7 mmol) generally according to the procedure described for Intermediate 18 afforded 1.16 g (82%) of (R)-2-bromomethyl-7-(2′,6′-dichloro-phenyl)-5-fluoro-2,3-dihydro-benzofuran as a colorless oil. HRMS EI m/e 373.9277 (M)+, Calc'd. 373.9277; [α]D 25=−15.75 (c 8.0 in methanol).
- To a solution of (R)-2-bromomethyl-5-fluoro-2,3-dihydro-benzofuran (3.20 g, 14 mmol) in acetic acid was added bromine (2.2 ml, 42 mmol) and the reaction mixture was allowed to stir at room temperature for 12 h. The solvent was removed in vacuo and the residue dissolved in dichloromethane and washed with saturated aqueous sodium sulfite. The solvent was removed in vacuo and purification by flash column chromatography (silica, ethyl acetate:hexanes 1:19) afforded 3.16 g (74%) of as a light yellow oil. HRMS EI m/e 307.8846 (M)+, Calc'd. 307.8848. [α]D 25=+24.8 (c 1% in methanol).
- Treatment of (R)-7-bromo-2-bromomethyl-5-fluoro-2,3-dihydrobenzofuran (2.57 g, 8.2 mmol) and o-tolyboronic acid (3.4 g, 24 mmol) generally according to the procedure described for Intermediate 37 afforded 2.54 g (95%) of (R)-2-Bromomethyl-5-fluoro-7-o-toly-2,3-dihydrobenzofuran as a colorless oil. HRMS EI m/e 320.0224 (M)+; [α]D 25=+35.00 (c 1% in methanol).
- Treatment of (R)-7-bromo-2-bromomethyl-5-fluoro-2,3-dihydrobenzofuran (0.5 g, 1.6 mmol) and 2-chlorobenzene boronic acid (0.76 g, 4.8 mmol) generally according to the procedure described for Intermediate 37 gave 0.55 g (99%) (R)-2-bromomethyl-7-(2-chlorophenyl)-5-fluoro-2,3-dihydrobenzofuran as a colorless oil. HRMS EI M+ 339.9657; [α]D 25=+29.6 (c 8.14 in methanol).
- Treatment of (R)-7-bromo-2-bromomethyl-5-fluoro-2,3-dihydrobenzofuran (0.40 g, 1.3 mmol) and 5-chloro-o-toluene boronic acid (0.88 g, 5.2 mmol) generally according to the procedure described for Intermediate 37 provided 0.41 g (90%) of (R)-2-bromomethyl-7-(2-methyl-5-chloro-phenyl)-5-fluoro-2,3-dihydrobenzofuran as a colorless oil. HRMS EI M+ 353.9829; [α]D 25=+47.38 (c 9.29 in methanol).
- Treatment of (R)-7-bromo-2-bromomethyl-5-fluoro-2,3-dihydrobenzofuran (0.42 g, 1.3 mmol) and 4-chloro-o-toluene boronic acid (0.88 g, 5.2 mmol) generally according to the procedure described for Intermediate 37 provided 0.43 g (95%) of (R)-2-bromomethyl-7-(2-methyl-4-chloro-phenyl)-5-fluoro-2,3-dihydrobenzofuran as a colorless oil. HRMS EI M+ 353.9825, Calc'd. 353.9825; [α]D 25=+39.14 (c 7.0 in methanol).
- Treatment of (R)-2-Bromomethyl-7-(4-chloro-2-methyl-phenyl)-5-fluoro-2,3-dihydrobenzofuran (0.4 g, 1.1 mmol) generally according to the procedure described for Intermediate 98 gave 0.30 g (85%) of (R)-2-azidomethyl-7-(4-chloro-2-methyl-phenyl)-5-fluoro-2,3-dihydrobenzofuran as a colorless oil. HRMS EI m/e 317.0719 (M)+, Calc'd. 317.0718; [α]D 25=+16.76 (c 8.71 in methanol).
- Treatment of 2-bromomethyl-7-(5-chloro-2-methyl-phenyl)-5-fluoro-2,3-dihydroben-zofuran (0.41 g, 1.2 mmol) generally according to the procedure described for Intermediate 98 gave 0.31 g (85%) of (R)-2-azidomethyl-7-(5-chloro-2-methyl-phenyl)-5-fluoro-2,3-dihydrobenzofuran as a colorless oil. HRMS EI m/e 317.0734 (M)+, Calc'd. 317.0733; [α]D 25=+3.12 (c 7.71 in methanol).
- Treatment of (±)-(4-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.36 g, 3.57 mmol) with sodium azide (0.929 g, 14.29 mmol) generally according to the procedure described for intermediate 98 afforded (±)-(4-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl azide. The azide was dissolved in ethanol (50 mL) and palladium on carbon (0.083 g, 10 wt. %) was added and the reaction mixture was shaken under an H2 atmosphere (50 psi) for 6 h. The reaction mixture was filtered (celite) and the solvent removed in vacuo to provide a colorless oil. The oil was re-dissolved in isopropanol (3 mL) and hydrogen chloride (1.0 N in diethyl ether, 10.0 mL) was added. The resulting precipitate was filtered, washed (diethyl ether), and dried to afford 0.700 g (94%) of (±)-1-(4-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. mp 229-230° C.; Anal. calcd. for C15H15NOHCl: C, 68.83; H, 6.16; N, 5.35. Found: C, 66.11; H, 6.25; N, 5.02.
- Fraction 1 (0.206 g) obtained from the chiral HPLC separation of (±)-benzyl (4-phenyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralcel OD, ethanol:water 15:85) was treated with hydrogen bromide (3 mL, 30 wt. % in acetic acid) and the reaction mixture was allowed to stir at room temperature for 30 min. Diethyl ether (20 mL) was added to the reaction mixture and the resulting precipitate was filtered, washed with diethyl ether, and dried to afford 0.082 g (46%) of (+)-1-(4-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a tan solid, hydrobromide salt. [α]D 25=+86.92 (c 10.0 in methanol); mp 225-226° C.; Anal. calcd. for C15H15NOHBr: C, 58.84; H, 5.27; N, 4.57. Found: C, 57.02; H, 4.96; N, 4.3.
- Treatment of 0.197 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl (4-phenyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate, (Chiralcel OD, ethanol:water 15:85) with hydrogen bromide (3 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 gave 0.091 g (54%) of (−)-1-(4-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a tan solid, hydrobromide salt. [α]D 25=−84.76 (c 10.0 in methanol); mp 227-228° C.; Anal. calcd. for C15H15NOHBr: C, 58.84; H, 5.27; N, 4.57. Found: C, 57.19; H, 5.19; N, 4.18.
- Treatment of (±)-[4-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (1.31 g, 3.32 mmol) with sodium azide (0.863 g, 13.28 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-4-(2-methylphenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.082 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.689 g (85%) of (±)-1-[4-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 231-234° C.; Anal. calcd. for C16H17NOHCl.0.2H2O: C, 68.79; H, 6.64; N, 5.01. Found: C, 68.49; H, 6.50; N, 4.87.
- Treatment of 0.236 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl[4-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OD, methanol) with hydrogen bromide (3 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 gave 0.167 g (83%) of (+)-1-[4-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrobromide salt. [α]D 25=+89.44 (c 10.0 in methanol); mp 232-233° C.; Anal. calcd. for C16H17NOHBr: C, 60.01; H, 5.67; N, 4.37. Found: C, 59.28; H, 5.36; N, 3.8.
- Treatment of 0.229 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl[4-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OD, methanol) with hydrogen bromide (3 mL, 30 wt. % in acetic acid) according the procedure described for Example 2 afforded 0.190 g, (97%) of (−)-1-[4-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrobromide salt. [α]D 25=−83.96 (c 10.0 in methanol); mp 231-233° C.; Anal. calcd. for C16H17NOHBr: C, 60.01; H, 5.67; N, 4.37. Found: C, 59.37; H, 5.64; N, 3.98.
- Treatment of (±)-(7-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.00 g, 2.99 mmol) with sodium azide (0.78 g, 11.96 mmol) generally according to the procedure described for Intermediate 98 provided (±)-2-(azidomethyl)-7-methoxy-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.06 g, 10 wt. %) generally according to the procedure described for Example 1 afforded 0.465 g (54%) (±)-1-(7-methoxy-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. mp 168-171° C.; Anal. calcd. for C10H13NO2HCl: C, 55.69; H, 6.54; N, 6.49. Found: C, 55.68; H, 6.52; N, 6.5.
- Treatment of (±)-(7-cyclopentyl-2,3-dihydro-1-benzofuran-2-yl)methanol (4.08 g, 18.7 mmol) with p-toluenesulfonyl chloride (3.92 g, 21.9 mmol) in anhydrous pyridine (76 mL) generally according to the procedure described for Intermediate 10 gave (±)-(7-cyclopentyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a tan oil. Treatment of the tosylate with sodium azide (4.39 g, 67.57 mmol) generally according to the procedure described for Intermediate 98 afforded 4.1 g of (±)-2-(azidomethyl)-7-cyclopentyl-2,3-dihydro-1-benzofuran as a yellow oil. Treatment of the azide with palladium on carbon (0.41 g, 10 wt. %) generally according to the procedure described for Example 1 afforded 2.5 g (58%) of (±)-(7-cyclopentyl-2,3-dihydro-1-benzofuran-2-yl)methylamine as a white solid, hydrochloride salt. mp 174° C.; Anal. calcd. for C14H19ON2HCl: C, 66.26; H, 7.94; N, 5.52. Found C, 66.13; H, 7.71; N, 5.5.
- Treatment of 0.833 g of fraction 1 obtained from the chiral HPLC separation of (±)-(7-cyclopentyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralcel OJ, ethanol:hexane 1:1) with hydrogen bromide (12.0 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 gave 0.541 g (76%) of (−)-(7-cyclopentyl-2,3-dihydro-1-benzofuran-2-yl)methylamine as a tan solid, hydrobromide salt. [α]D 25=−13.4 (c 10.0 in methanol); mp 208-211° C.; Anal. calcd. for C14H19NOHBr: C, 56.39; H, 6.76; N, 4.7. Found: C, 55.83; H, 6.54; N, 4.41.
- Treatment of 0.760 g of fraction 2 obtained from the chiral HPLC separation of (±)-(7-cyclopentyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralcel OJ, ethanol:hexane 1:1) with hydrogen bromide (11.0 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 afforded 0.468 g (72%) of (+)-(7-cyclopentyl-2,3-dihydro-1-benzofuran-2-yl)methylamine as a tan solid, hydrobromide salt. [α]D 25=+11.5 (c 10.0 in methanol); Anal. calcd. for C14H19NOHBr: C, 56.39; H, 6.76; N, 4.7. Found: C, 56.03; H, 6.71; N, 4.63.
- Treatment of (±)-(5-chloro-7-cyclohexyl-2,3-dihydro-1-benzofuran-2-yl)methanol (4.5 g, 0.017 mol) with p-toluenesulfonyl chloride (4.8 g, 0.025 mol), diisopropylethylamine (4.36 g, 0.034 mol), and 4-(dimethylamino)pyridine (0.12 g, 0.98 mmol) generally according to the procedure described for Intermediate 45 gave (±)-(5-chloro-7-cyclohexyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a colorless oil. Treatment of the tosylate with sodium azide (4.03 g, 61.99 mmol) generally according to the procedure described for Intermediate 98 provided 3.45 g of (±)-2-(azidomethyl)-5-chloro-7-cyclohexyl-2,3-dihydro-1-benzofuran. Treatment of the azide with sulfided platinum on carbon (0.75 g, 5 wt. %) generally according to the procedure described for Example 1 afforded 2.70 g (60%) of (±)-(5-chloro-7-cyclohexyl-2,3-dihydro-1-benzofuran-2-yl)methylamine as a white solid, hydrochloride salt. mp 210-213° C.; Anal. calcd for C15H20ClNOHCl: C, 59.61; H, 7.00; N, 4.63. Found: C, 57.29; H, 7.14; N, 4.78.
- To a suspension of lithium aluminum hydride (0.114 g, 3.0 mmol) in tetrahydrofuran (30 mL) was added (±)-methyl (5-chloro-7-cyclohexyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (0.65 g, 2.0 mmol) and the reaction mixture was allowed to stir at room temperature for 30 h. The reaction mixture was quenched with saturated ammonium chloride (50 mL), diluted with tetrahydrofuran (70 mL), and the aqueous layer was extracted with tetrahydrofuran (2×50 mL). The combined organic layers were washed with saturated aqueous sodium bicarbonate (100 mL) and saturated aqueous sodium chloride (100 mL), were dried (sodium sulfate), and the solvent was removed in vacuo to provide a crude oil. Purification by flash column chromatography (silica, dichloromethane:methanol 97:3) gave a light brown oil. The oil was re-dissolved in tetrahydrofuran (50 mL) and aqueous hydrogen chloride (1 N, 3 mL) was added. The resulting precipitate was filtered and washed with diethyl ether to provide 0.28 g (44%) of (±)-N-[(5-chloro-7-cyclohexyl-2,3-dihydro-1-benzofuran-2-yl)methyl]-N-methylamine as a white solid, hydrochloride salt. mp 125-128° C.; Anal. calcd. for C16H22ClNOHCl: C, 60.76; H, 7.33; N, 4.43. Found: C, 60.92; H, 7.46; N, 4.09.
- Treatment of 2-tert-butyl-4-methoxyphenol and 3-tert-butyl-4-methoxyphenol (18.25 g, 0.101 mol) with potassium carbonate (55.28 g, 0.400 mol) and allyl bromide (14.69 g, 0.121 mol) followed by treatment of the resultant allyl ether in refluxing mesitylene generally according to the procedure described for Intermediate 8 provided 2-allyl-6-tert-butyl-4-methoxyphenol and 2-allyl-5-tert-butyl-4-methoxyphenol. Treatment of the phenol with 3-chloroperoxybenzoic acid (49.58 g, 0.287 mol, 77%) and potassium carbonate (33.0 g, 0.238 mol) generally according to the procedure described for Intermediate 9 gave 3.23 g (14%) of (±)-(7-tert-butyl-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methanol as a white solid. Treatment of the benzofuran with p-toluenesulfonyl chloride (2.86 g, 0.015 mol) generally according to the procedure described for Intermediate 10 afforded (±)-(7-tert-butyl-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. Treatment of the tosylate with sodium azide (1.46 g, 22.5 mmol) generally according to the procedure described for Intermediate 98 gave (±)-2-(azidomethyl)-7-tert-butyl-5-methoxy-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.14 g, 10 wt. %) generally according to the procedure described for Example 1 afforded 1.5 g (40%) of (±)-(7-tert-butyl-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methylamine) as a white solid, hydrochloride salt. mp 174-176° C.; Anal calcd. for C14H21O2NHCl: C, 61.87; H, 8.16; N, 5.15. Found C, 61.67; H, 8.37; N, 4.93.
- Treatment of (±)-[7-chloro-4-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (1.0 g, 2.46 mmol) with sodium azide (0.64 g, 9.83 mmol) generally according to the procedure described for Intermediate 98 provided (±)-2-(azidomethyl)-7-chloro-4-(trifluoromethyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.060 g, 10 wt. %) generally according to the procedure described for Example 1 afforded 0.350 g (64%) of (±)-1-[7-chloro-4-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp >250° C.; Anal. calcd. for C10H9F3ClNOHCl: C, 41.69; H, 3.5; N, 4.86. Found: C, 41.78; H, 3.43; N, 4.77.
- Treatment of (±)-(7-benzyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (6.53 g, 16.6 mmol) with sodium azide (4.30 g, 66.2 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-(7-benzyl-2,3-dihydro-1-benzofuran-2-yl)methyl azide. Treatment of the azide with palladium on carbon (0.40 g, 10 wt. %) generally according to the procedure described for Example 1 gave 3.62 g (79%) of (±)-1-(7-benzyl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. mp 107-111° C. (dec); Anal. calcd. for C16H17NOHCl: C, 69.69; H, 6.58; N, 5.08. Found: C, 68.56; H, 6.66; N, 4.92.
- Treatment of 1.528 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl (7-benzyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralcel OD, methanol) with palladium on carbon (0.15 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.781 g (69%) of (+)-1-(7-benzyl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. [α]D 25=+15.1 (c 10.0 in methanol); mp 128-131° C.; Anal. calcd. for C16H17NOHCl: C, 69.69; H, 6.58; N, 5.08. Found: C, 69.14; H, 6.51; N, 5.03.
- Treatment of 0.792 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl (7-benzyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralcel OD, methanol) with palladium on carbon (0.08 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.415 g (71%) of (−)-1-(7-benzyl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. [α]D 25=−15.3 (c 10.0 in methanol); mp 128-131° C.; Anal. calcd. for C16H17NOHCl: C, 69.69; H, 6.58; N, 5.08. Found: C, 69.29; H, 6.59; N, 5.06.
- Treatment of (±)-(7-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (5.15 g, 14.9 mmol) with sodium azide (3.87 g, 59.5 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-(7-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methyl azide. Treatment of the azide with palladium on carbon (0.30 g, 10 wt. %) generally according to the procedure described for Example 1 gave 2.35 g (69%) of (±)-(7-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methylamine as a white solid, hydrochloride salt. mp 160-164° C. (dec); Anal. calcd. for C12H17NOHCl: C, 63.29; H, 7.97; N, 6.15. Found: C, 63.33; H, 7.98; N, 6.15.
- Treatment of 0.891 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl (7-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralcel OJ, ethanol) with palladium on carbon (0.09 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.475 g (76%) of (−)-(7-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methylamine as a white solid, hydrochloride salt. [α]D 25=−34.09 (c 10.0 in methanol); mp 176-178° C.; Anal. calcd. for C12H17NOHCl: C, 63.29; H, 7.97; N, 6.15. Found: C, 63.32; H, 8.07; N, 6.14.
- Treatment of 0.776 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl (7-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralcel OJ, ethanol) with palladium on carbon (0.09 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.445 g (82%) of (+)-(7-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methylamine as a white solid, hydrochloride salt. [α]D 25=+32.18 (c 10.0 in methanol); mp 176-178° C.; Anal. calcd. for C12H17NOHCl: C, 63.29; H, 7.97; N, 6.15. Found: C, 63.86; H, 8.06; N, 6.00.
- Treatment of (±)-(5-chloro-7-isopropyl-4-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (6.64 g, 16.8 mmol) with sodium azide (3.28 g, 50.4 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-5-chloro-7-isopropyl-4-methyl-2,3-dihydro-1-benzofuran. To a solution of (±)-2-(azidomethyl)-5-chloro-7-isopropyl-4-methyl-2,3-dihydro-1-benzofuran (4.44 g, 16.71 mmol) in tetrahydrofuran (100 mL) was added triphenylphoshine (5.25 g, 20.05 mmol) followed by water (10 mL) and the reaction mixture was allowed to stir at room temperature for 12 h. The solvent was removed in vacuo to provide a crude solid. Purification by flash column chromatography (silica, 10% ammonium hydroxide in methanol:ethyl acetate 1:9) provided a colorless oil. The oil was re-dissolved in isopropanol (5 mL) and hydrogen chloride (20.0 mL, 1.0 N in diethyl ether) was added. The resulting precipitate was filtered, washed (diethyl ether), and dried to afford 4.08 g (88%) of (±)-1-(5-chloro-7-isopropyl-4-methyl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. mp >225° C. (dec); Anal. calcd. for C13H18ClNOHCl: C, 56.53; H, 6.93; N, 5.07. Found: C, 56.56; H, 6.91; N, 4.94.
- To 1.61 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl (5-chloro-7-isopropyl-4-methyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralpak AD, ethanol) was added hydrogen bromide (20 mL, 30 wt. % in acetic acid) and the resulting solution was allowed to stir at room temperature for 3 h. The reaction mixture was diluted with water and neutralized with 2.0 N aqueous sodium hydroxide. The reaction mixture was extracted with ethyl acetate (2×100 mL), the combined organic layers were washed with water (100 mL) and saturated aqueous sodium chloride (100 mL), were dried (magnesium sulfate), and the solvent was removed in vacuo to provide a crude oil. Purification by flash column chromatography (silica, 10% aqueous ammonium hydroxide in methanol:ethyl acetate 1:9) provided a colorless oil. The oil was re-dissolved in isopropanol (2 mL) and hydrogen chloride (6 μL, 1.0 M in diethyl ether) was added. The resulting precipitate was filtered, washed (diethyl ether), and dried to give 0.52 g (44%) of (−)-1-(5-chloro-7-isopropyl-4-methyl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. [α]D 25=−53.20 (c 10.0 in methanol); mp >225° C.; Anal. calcd. for C13H18ClNOHCl: C, 56.53; H, 6.93; N, 5.07. Found: C, 56.61; H, 7.06; N, 5.07.
- Treatment of 1.49 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl (5-chloro-7-isopropyl-4-methyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralpak AD, ethanol) with hydrogen bromide (20 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 22 afforded 0.456 g (42%) of (+)-1-(5-chloro-7-isopropyl-4-methyl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. [α]D 25=+ 51.30 (c 10.0 in methanol); mp >225° C.; Anal. calcd. for C13H18ClNOHCl: C, 56.53; H, 6.93; N, 5.07. Found: C, 56.52; H, 7.06; N, 5.03.
- Treatment of (±)-(7-tert-butyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (12.43 g, 0.035 mol) with sodium azide (6.73 g, 0.103 mol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-7-tert-butyl-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.750 g, 10 wt. %) generally according to the procedure described for Example 1 gave 5.56 g (67%) of (±)-1-(7-tert-butyl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. mp 177-180° C. (dec); Anal. Calcd. for C13H19NOHCl: C, 64.59; H, 8.34; N, 5.79. Found: C, 64.34; H, 9.19; N, 5.73.
- Treatment of 1.31 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl (7-tert-butyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralcel OJ, ethanol) with palladium on carbon (0.13 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.747 g (80%) of (−)-1-(7-tert-butyl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. [α]D 25=−25.4 (c 10.0 in methanol); mp 178-180° C.; Anal. calcd. for C13H19NOHCl: C, 64.59; H, 8.34; N, 5.79. Found: C, 64.23; H, 8.75; N, 5.44.
- Treatment of 2.2 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl (7-tert-butyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralcel OJ, ethanol) with palladium on carbon (0.22 g, 10 wt. %) generally according to the procedure described for Example 1 gave 1.40 g (89%) of (+)-1-(7-tert-butyl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. [α]D 25=+24.99 (c 10.0 in methanol); mp 177-179° C.; Anal. calcd. for C13H19NOHCl: C, 64.59; H, 8.34; N, 5.79. Found: C, 64.87; H, 8.72; N, 5.51.
- Treatment of (±)-(7-tert-butyl-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (13.74 g, 34.8 mmol) with sodium azide (9.05 g, 0.139 mol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-7-tert-butyl-5-chloro-2,3-dihydro-1-benzofuran. Treatment of the azide with triphenylphoshine (9.13 g, 34.8 mmol) generally according to the procedure described for Example 21 afforded 4.43 (46 of (±)-1-(7-tert-butyl-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. mp 229-231° C.; Anal. calcd. for C13H18ClNOHCl: C, 56.53; H, 6.93; N, 5.07. Found: C, 56.49; H, 6.71; N, 4.86.
- Treatment of 0.888 g of fraction 1 obtained from the (±)-benzyl (7-tert-butyl-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralpak AD, hexane:isopropanol 9:1) with hydrogen bromide (20 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 gave 0.594 g (78%) of (−)-1-(7-tert-butyl-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrobromide salt. [α]D 25=−33.16 (c 10.0 in methanol); mp 219-222° C.; Anal. calcd. for C13H18ClNOHBr: C, 48.69; H, 5.97; N, 4.37. Found: C, 48.81; H, 6.01; N, 4.24.
- Treatment of 0.855 g of fraction 2 obtained from the (+)-benzyl (7-tert-butyl-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralpak AD, hexane:isopropanol 9:1) with hydrogen bromide (20 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 provided 0.286 g (39%) of (+)-1-(7-tert-butyl-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrobromide salt. [α]D 25=+35.32 (c 10.0 in methanol); mp 219-222° C.; Anal. calcd. for C13H18ClNOHBr: C, 48.69; H, 5.97; N, 4.37. Found: C, 48.78; H, 5.97; N, 4.28.
- Treatment of (±)-(6-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.00 g, 2.99 mmol) with sodium azide (0.78 g, 11.96 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-6-methoxy-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.06 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.442 g (69%) of (±)-1-(6-methoxy-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. mp >220° C.; Anal. calcd. for C10H13NO2HCl: C, 55.69; H, 6.54; N, 6.49. Found: C, 55.29; H, 6.48; N, 6.38.
- Treatment of (±)-(6-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.280 g, 0.736 mmol) with sodium azide (0.191 g, 2.94 mmol) generally according to the procedure described for Intermediate 98 gave (±)-(6-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl azide. Treatment of the azide with palladium on carbon (0.026 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.190 g (90%) of (±)-(6-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a tan solid, hydrobromide salt. mp 218-221° C. Anal. calcd. for C15H15NOHBr: C, 58.84; H, 5.27; N, 4.57. Found: C, 54.80; H, 4.88; N, 4.18.
- Treatment of {7-[3,5-bis(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate (0.75 g, 1.45 mmol) with sodium azide (0.24 g, 3.62 mmol) generally according to the procedure described for Intermediate 98 provided (±)-2-(azidomethyl)-7-[3,5-bis(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (10%, 0.075 g) generally according to the procedure described for Example 1 afforded 0.270 g (47%) of (±)-1-{7-[3,5-bis(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine as a white solid, hydrochloride salt. mp 174-175° C. (dec.); Anal. calcd. for C17H13F6NOHCl: C, 51.34; H, 3.55; N, 3.52. Found: C, 51.25; H, 3.57; N, 3.68.
- Treatment of (±)-(7-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.5 g, 3.32 mmol) with 1-naphthaleneboronic acid (0.86 g, 4.97 mmol), tetrakis(triphenylphosphine)palladium(0) (0.38 g, 0.33 mmol), and potassium phosphate (1.41 g, 6.63 mmol) generally according to the procedure described for Intermediate 50 provided (±)-[7-(1-naphthyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate. Treatment of the tosylate with sodium azide (0.10 g, 1.49 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-7-(1-naphthyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.03 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.10 g (10%) of (±)-1-[7-(1-naphthyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 120-124° C.; Anal. calcd. for C19H17NOHCl.0.5H2O: C, 71.13; H, 5.97; N, 4.37. Found: C, 70.93; H, 5.74; N, 4.58.
- Treatment of (±)-[7-(3-chloro-4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.68 g, 1.57 mmol) with sodium azide (0.25 g, 3.92 mmol) generally according to the procedure described for Intermediate 98 gave (±)-2-(azidomethyl)-7-(3-chloro-4-fluorophenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.035 g, 10 wt. %) generally according to the procedure described for Example 1 afforded 0.186 g (38%) of (±)-1-[7-(3-chloro-4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp >210° C.; Anal. calcd. for C15H13ClFNOHCl: C, 57.34; H, 4.49; N, 4.46. Found: C, 57.38; H, 4.32; N, 4.55.
- Treatment of (±)-[7-(3,5-dichlorophen yl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.22 g, 0.498 mmol) with sodium azide (0.08 g, 1.25 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-7-(3,5-dichlorophenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with triphenylphosphine (0.26 g, 0.997 mol) generally according to the procedure described for Example 21 afforded 0.08 g (49%) of (±)-1-[7-(3,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 165-168° C.; Anal. calcd. for C15H13Cl2NOHCl: C, 54.49; H, 4.27; N, 4.24. Found: C, 54.27; H, 3.95; N, 4.23.
- Treatment of (±)-(7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 1.06 mmol) with sodium azide (0.17 g, 2.65 mmol) generally according to the procedure described for Intermediate 98 provided (±)-(7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl azide. Treatment of the azide with palladium on carbon (0.025 g, 10 wt. %) generally according to the procedure described for Example 1 afforded 0.181 g (65%) of (±)-1-(7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. mp >200° C. (dec); Anal. calcd. for C15H15NOHCl.0.2H2O: C, 67.90; H, 6.23; N, 5.28. Found: C, 67.69; H, 6.16; N, 5.3.
- Treatment of 0.40 g of fraction 1 obtained from the chiral HPLC separation of (±)-1-(7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine (Chiralpak AD, ethanol:hexane 1:1) with palladium on carbon (0.040 g, 10 wt. %) generally according to the procedure described for Example 1 gave (+)-(1-(7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine 0.235 g (37%) as a white solid, hydrochloride salt. [α]D 25=+14.6 (c 10.0 in methanol); Anal. calcd. for C15H15NOHCl: C, 68.83; H, 6.16; N, 5.35. Found: C, 67.54; H, 5.97; N, 5.03.
- Treatment of 0.40 g of fraction 2 obtained from the chiral HPLC separation of (±)-1-(7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine (Chiralpak AD, ethanol:hexane 1:1) with palladium on carbon (0.040 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.212 g (33%) of (−)-1-(7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. [α]D 25=−17.9 (c 10.0 in methanol); mp 220-222° C.; Anal. calcd. for C15H15NOHCl: C, 68.83; H, 6.16; N, 5.35. Found: C, 67.68; H, 6.07; N, 5.15.
- Treatment of (±)-[7-(2-naphthyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.51 g, 1.23 mmol) with sodium azide (0.20 g, 3.08 mmol) generally according to the procedure described for Intermediate 98 provided (±)-2-(azidomethyl)-7-(2-naphthyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.050 g, 10 wt. %) generally according to the procedure described for Example 1 afforded 0.183 g (48%) of (±)-1-[7-(2-naphthyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 135-140° C.; Anal. calcd. for C19H17NOHCl.0.3H2O: C, 71.94; H, 5.91; N, 4.42. Found: C, 71.67; H, 5.95; N, 4.25.
- Treatment of (±)-(7-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.5 g, 3.32 mmol) with 2-benzofuranboronic acid (0.81 g, 4.97 mmol), tetrakis(triphenylphosphine)palladium(0) (0.38 g, 0.33 mmol), and potassium phosphate (1.41 g, 6.63 mmol) generally according to the procedure described for Intermediate 50 provided (±)-2′,3′-dihydro-2,7′-bi-1-benzofuran-2′-ylmethyl 4-methylbenzenesulfonate. Treatment of the tosylate with sodium azide (0.09 g, 1.32 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-2′-(azidomethyl)-2′,3′-dihydro-2,7′-bi-1-benzofuran. Treatment of the azide with palladium on carbon (0.03 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.12 g (12%) of (±)-1-(2′,3′-dihydro-2,7′-bi-1-benzofuran-2′-yl)methanamine as a white solid, hydrochloride salt. mp >220° C. (dec); Anal. calcd. for C19H17NOHCl.1.0H2O: C, 63.85; H, 5.67; N, 4.38. Found: C, 63.54; H, 5.1; N, 4.3.
- Treatment of (±)-[7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.90 g, 2.27 mmol) with sodium azide (0.44 g, 6.84 mmol) generally according to the procedure described for Intermediate 98 gave (+)-2-(azidomethyl)-7-(3-methylphenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (10%, 0.060 g) generally according to the procedure described for Example 1 afforded 0.444 g (71%) of (±)-1-[7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp >210° C. (dec); Anal. calcd. for C16H17NOHCl 0.2H2O: C, 68.79; H, 6.64; N, 5.01. Found: C, 68.54; H, 6.57; N, 4.9.
- Treatment of 0.390 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl[7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralpak AD, ethanol:hexane 1:1) with palladium on carbon (0.039 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.189 g (66%) of (+)-1-[7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=+28.4 (c 10.0 in methanol); mp 196-198° C.; Anal. calcd. for C16H17NOHCl: C, 69.69; H, 6.58; N, 5.08. Found: C, 68.44; H, 6.71; N, 4.81.
- Treatment of 0.290 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl[7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralpak AD, ethanol:hexane 1:1) with palladium on carbon (0.030 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.178 g (83%) of (−)-1-[7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=−25.6 (c 10.0 in methanol); mp 194-196° C.; Anal. calcd. for C16H17NOHCl: C, 69.69; H, 6.58; N, 5.08. Found: C, 68.92; H, 6.62; N, 4.94.
- Treatment of (±)-(7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (2.2 g, 5.64 mmol) with sodium azide (1.48 g, 22.77 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-(7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl azide. Treatment of the azide with palladium on carbon (0.130 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.838 g (55%) of (±)-1-(7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. mp >200° C.; Anal. calcd. for C13H13FNOSHCl: C, 58.31; H, 5.27; N, 5.23. Found: C, 56.4; H, 5.23; N, 4.95.
- Treatment of 0.219 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl (7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralcel AD, water:methanol 1:9) with hydrogen bromide (3.0 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 afforded 0.120 g (64%) of (+)-1-(7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a tan solid, hydrobromide salt. [α]D 25=+13.8 (c 10.0 in methanol); mp 234-236° C.; Anal. calcd. for C13H13NOSBBr: C, 50.01; H, 4.52; N, 4.49. Found: C, 49.37; H, 4.45; N, 4.41.
- Treatment of 0.211 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl (7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralcel AD, water:methanol 1:9) with hydrogen bromide (3.0 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 gave 0.130 g (72%) of (−)-1-(7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrobromide salt. [α]D 25=−14.5 (c 10.0 in methanol); mp 234-235° C.; Anal. calcd. for C13H13NOSHBr: C, 50.01; H, 4.52; N, 4.49. Found: C, 49.15; H, 4.49; N, 4.38.
- Treatment of (±)-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (7.79 g, 19.74 mmol) with sodium azide (5.13 g, 78.99 mmol) generally according to the procedure described for Intermediate 98 gave (±)-2-(azidomethyl)-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.5 g, 10 wt. %) generally according to the procedure described for Example 1 provided 3.63 g (67%) of (±)-1-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp >200° C.; Anal. calcd. for C16H17NOHCl: C, 69.69; H, 6.58; N, 5.08. Found: C, 69.83; H, 6.64; N, 5.
- Treatment of 1.61 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OJ, ethanol:hexane 1:1) with palladium on carbon (0.161 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.951 g (80%) of (+)-1-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=+16.9 (c 10.0 in methanol); mp 211-212° C.; Anal. calcd. for C16H17NOHCl: C, 69.69; H, 6.58; N, 5.08. Found: C, 68.88; H, 6.72; N, 4.92.
- Treatment of 1.68 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OJ, ethanol:hexane 1:1) with palladium on carbon (0.169 g, 10 wt. %) generally according to the procedure described for Example 1 afforded 1.04 g (84%) of (−)-1-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=−16.4 (c 10.0 in methanol); mp 208-209° C.; Anal. calcd. for C16H17NOHCl: C, 69.69; H, 6.58; N, 5.08. Found: C, 69.19; H, 6.62; N, 4.91.
- Treatment of (±)-[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (3.13 g, 7.85 mmol) with sodium azide (2.04 g, 31.42 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with sulfided platinum on carbon (0.21 g, 5 wt. %) generally according to the procedure described for Example 1 provided 1.81 g (83%) of (±)-1-[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 244-246° C.; Anal. calcd. for C15H14FNOHCl: C, 64.4; H, 5.4; N, 5.01. Found: C, 63.98; H, 5.4; N, 4.89.
- Treatment of 0.542 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OJ, hexane:isopropanol 9:1) with palladium on carbon (0.054 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.337 g (84%) of (+)-1-[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=+7.14 (c 10.0 in dimethylsulfoxide); mp 227-228° C.; Anal. calcd. for C15H14FNOHCl: C, 64.4; H, 5.4; N, 5.01. Found: C, 63.96; H, 5.4; N, 4.84.
- Treatment of 0.509 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OJ, hexane:isopropanol 9:1) with palladium on carbon (0.050 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.318 g (84%) of (−)-1-[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=−9.48 (c 10.0 in dimethylsulfoxide); mp 224-225° C.; Anal. calcd. for C15H14FNOHCl: C, 64.4; H, 5.4; N, 5.01. Found: C, 63.74; H, 5.21; N, 4.91.
- Treatment of (7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (4.0 g, 10.44 mmol) with 2-(trifluoromethyl)phenylboronic acid (2.57 g, 13.6 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.426 g, 0.542 mmol), and potassium carbonate (3.61 g, 26.09 mmol) generally according to the procedure described for Intermediate 37 provided (±)-{7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate. Treatment of the tosylate with sodium azide (1.31 g, 20.25 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.160 g, 10 wt. %) generally according to the procedure described for Example 1 provided 1.05 g (65%) of (±)-1-{7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine as a white solid, hydrochloride salt. mp 204-205° C.; Anal. calcd. for C16H14F3NOHCl: C, 58.25; H, 4.59; N, 4.25. Found: C, 57.57; H, 4.52; N, 4.08.
- Treatment of 0.350 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methylcarbamate (Chiralcel OJ, ethanol:hexane 1:1) with palladium on carbon (0.035 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.200 g (74%) of (−)-1-{7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine as a white solid, hydrochloride salt. [α]D 25=−23.10 (c 10.0 in methanol); mp 109-111° C.; Anal. calcd. for C16H14F3NOHCl: C, 58.28; H, 4.59; N, 4.25. Found: C, 58.09; H, 4.35; N, 4.21.
- Treatment of 0.343 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methylcarbamate (Chiralcel OJ, ethanol:hexane 1:1) with palladium on carbon (0.034 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.165 g (62%) of (+)-1-{7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine as a white solid, hydrochloride salt. [α]D 25=+25.12 (c 10.0 in methanol); mp 97-100° C.; Anal. calcd. for C16H14F3NOHCl: C, 58.28; H, 4.59; N, 4.25. Found: C, 57.82; H, 4.35; N, 4.15.
- Treatment of (±)-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.646 g, 1.58 mmol) with sodium azide (0.411 g, 6.33 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.057 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.383 g (84%) of (±)-1-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp >250° C.; Anal. calcd. for C17H19NOHCl: C, 70.46; H, 6.96; N, 4.83. Found: C, 69.06; H, 7.01; N, 4.21.
- Treatment of 0.524 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OJ, methanol:carbon dioxide 3:7) with palladium on carbon (0.052 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.183 g (47%) of (−)-1-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=−3.98 (c 10.0 in methanol); mp 244-247° C.; Anal. calcd. for C17H19NOHCl: C, 70.46; H, 6.96; N, 4.83. Found: C, 69.61; H, 7.00; N, 4.60.
- Treatment of 0.530 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OJ, methanol:carbon dioxide 3:7) with palladium on carbon (0.053 g, 10 wt. %) generally according to the procedure described for Example 1 afforded 0.224 g (57%) of (+)-1-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=+4.28 (c 10.0 in methanol); mp 244-247° C.; Anal. calcd. for C17H19NOHCl: C, 70.46; H, 6.96; N, 4.83. Found: C, 69.61; H, 6.87; N, 4.65.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (5.0 g, 13.05 mmol) with 2-methoxyphenylboronic acid (2.57 g, 16.96 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.532 g, 0.677 mmol), and potassium carbonate (4.51 g, 32.62 mmol) generally according to the procedure described for Intermediate 37 provided (±)-[7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate. Treatment of the tosylate with sodium azide (0.76 g, 11.69 mmol) generally according to the procedure described for Intermediate 98 gave (±)-2-(azidomethyl)-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.072 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.453 g (12%) of (±)-1-[7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp >250° C.; Anal. calcd. for C16H17NO2HCl: C, 65.86; H, 6.22; N, 4.8. Found: C, 65.72; H, 6.15; N, 4.86.
- Treatment of (±)-[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (2.6 g, 6.26 mmol) with sodium azide (1.63 g, 25.05 mmol) generally according to the procedure described for Intermediate 98 gave (±)-2-(azidomethyl)-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with sulfided platinum on carbon (0.17 g, 5 wt. %) generally according to the procedure described for Example 1 provided 1.05 g (57%) of (±)-1-[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp >250° C.; Anal. calcd. for C15H14ClNOHCl: C, 60.83; H, 5.1; N, 4.73. Found: C, 60.71; H, 5.48; N, 4.55.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (4.81 g, 12.56 mmol) with 2-(2-isopropylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (4.63 g, 18.84 mmol, Intermediate 35), dichlorobis(tri-o-tolylphosphine)palladium(II) (0.493 g, 0.627 mmol), and potassium carbonate (4.34 g, 31.38 mmol) generally according to the procedure described for Intermediate 37 provided (±)-[7-(2-isopropylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate. Treatment of the tosylate with sodium azide (2.10 g, 32.37 mmol) generally according to the procedure described for Intermediate 98 provided (±)-2-(azidomethyl)-7-(2-isopropylphenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.22 g, 10 wt. %) generally according to the procedure described for Example 1 provided 2.15 g (56%) of (±)-[7-(2-isopropylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylamine as a white solid, hydrochloride salt. mp 202-204° C.; Anal. calcd. for C18H21NOHCl: C, 71.16; H, 7.30; N, 4.61. Found: C, 70.83; H, 7.34; N, 4.48.
- Treatment of 0.760 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl[7-(2-isopropylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OD, hexane:isopropanol 9:1) with palladium on carbon (0.076 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.388 g (63%) of (+)-[7-(2-isopropylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylamine as a white solid, hydrochloride salt. [α]D 25=+15.7 (c 10.0 in methanol); mp 205-206° C.; Anal. calcd. for C18H21NOHCl: C, 71.16; H, 7.3; N, 4.61. Found: C, 70.78; H, 7.42; N, 4.47.
- Treatment of 0.749 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl[7-(2-isopropylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OD, hexane:isopropanol 9:1) with palladium on carbon (0.075 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.376 g (66%) of (−)-[7-(2-isopropylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylamine as a white solid, hydrochloride salt. [α]D 25=−16.0 (c 10.0 in methanol); mp 205-206° C.; Anal. calcd. for C18H21NOHCl: C, 71.16; H, 7.3; N, 4.61. Found: C, 70.54; H, 7.37; N, 4.61.
- Treatment of (±)-[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (1.68 g, 4.22 mmol) with sodium azide (1.09 g, 16.88 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.107 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.95 g (81%) of (±)-1-[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 200-202° C., Anal. calcd. for C15H14FNOHCl: C, 64.4; H, 5.4; N, 5.01. Found: C, 63.93; H, 5.48; N, 4.73.
- Treatment of (±)-[7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (3.6 g, 8.66 mmol) with sodium azide (2.25 g, 34.65 mmol) generally according to the procedure described for Intermediate 98 gave (±)-2-(azidomethyl)-7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with sulfided platinum on carbon (0.125 g, 5 wt. %) generally according to the procedure described for Example 1 provided 1.91 g (74%) of (±)-1-[7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a tan solid, hydrochloride salt. mp 150-154° C.; Anal. calcd. for C15H14ClNOHCl: C, 60.83; H, 5.1; N, 4.73. Found: C, 59.17; H, 5.12; N, 4.38.
- Treatment of 0.495 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl[7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralpak AS, hexane:isopropanol 9:1) with hydrogen bromide (6.2 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 gave 0.150 g (28%) of (+)-1-[7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a tan solid, hydrobromide salt. [α]D 25=+35.7 (c 10.0 in methanol); mp 187-189° C.; Anal. calcd. for C15H14ClNOHBr: C, 52.89; H, 4.44; N, 4.11. Found: C, 52.4; H, 4.47; N, 3.97.
- Treatment of 0.542 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl[7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralpak AS, hexane:isopropanol 9:1) with hydrogen bromide (6-8 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 afforded 0.232 g (49%) of (−)-1-[7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrobromide salt. [α]D 25=−34.6 (c 10.0 in methanol); mp 189-190° C.; Anal. calcd. for C15H14ClNOHBr: C, 52.89; H, 4.44; N, 4.11. Found: C, 52.83; H, 4.47; N, 3.97.
- Treatment of (±)-[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (3.0 g, 7.82 mmol) with sodium azide (0.309 g, 4.48 mmol) generally according to the procedure described for Intermediate 98 gave (±)-2-(azidomethyl)-7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.030 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.25 g (80%) of (±)-1-[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 152-154° C.; Anal. calcd. for C16H17NO2HCl: C, 65.86; H, 6.22; N, 4.8. Found: C, 65.21; H, 6.17; N, 4.46.
- Treatment of (±)-{7-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate (5.2 g, 11.57 mmol) with sodium azide (3.01 g, 46.3 mmol) generally according to the procedure described for Intermediate 98 gave (±)-2-(azidomethyl)-7-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.375 g, 10 wt. %) generally according to the procedure described for Example 1 provided 2.64 g (69%) of (±)-1-{7-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine as a white solid, hydrochloride salt. mp 172-174° C.; Anal. calcd. for C16H14F3NOHCl: C, 58.28; H, 4.59; N, 4.25. Found: C, 58.09; H, 4.6; N, 4.03.
- Treatment of (±)-[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (1.01 g, 2.56 mmol) with sodium azide (0.664 g, 10.24 mmol) generally according to the procedure described for Intermediate 98 gave (±)-2-(azidomethyl)-7-(4-methylphenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.03 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.528 g (75%) of (±)-1-[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 231-232° C.; Anal. calcd. for C16H17NOHCl: C, 69.69; H, 6.58; N, 5.08. Found: C, 66.26; H, 7.0; N, 4.73.
- Treatment of 0.198 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralpak AD, methanol:water 19:1)) with hydrogen bromide (3.0 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 afforded 0.143 g (84%) of (+)-1-[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a tan solid, hydrobromide salt. [α]D 25=+17.42 (c 10.0 in methanol); mp >250° C.; Anal. calcd. for C16H17NOHBr: C, 60.01; H, 5.67; N, 4.37. Found: C, 59.58; H, 5.57; N, 4.26.
- Treatment of 0.167 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralpak AD, methanol:water 19:1) with hydrogen bromide (3.0 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 gave 0.067 g (47%) of (−)-1-[7-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrobromide salt. [α]D 25=−17.02 (c 10.0 in methanol); mp >250° C.; Anal. calcd. for C16H17NOHBr: C, 60.01; H, 5.67; N, 4.37. Found: C, 59.5; H, 5.67; N, 4.23.
- Treatment of (±)-[7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (1.1 g, 3.01 mmol) with sodium azide (0.784 g, 12.04 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.074 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.542 g (64%) of (±)-1-[7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 237-240° C.; Anal. calcd. for C15H14FNOHCl: C, 64.4; H, 5.4; N, 5.01. Found: C, 64.26; H, 5.33; N, 4.85.
- Treatment of 0.184 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl[7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OD, methanol:water 19:1) with hydrogen bromide (2.0 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 gave 0.08 g (55%) of (+)-1-[7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrobromide salt. [α]D 25=+ 13.26 (c 10.0 in methanol); mp 207-208° C.; Anal. calcd. for C15H14FNOHBr: C, 55.57; H, 4.66; N, 4.32. Found: C, 55.10; H, 4.59; N, 4.22.
- Treatment of 0.173 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl[7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OD, methanol:water 19:1) with hydrogen bromide (2.0 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 provided 0.108 g (73%) of (−)-1-[7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrobromide salt. [α]D 25=−12.24 (c 10.0 in methanol); mp 208-210° C.; Anal. calcd. for C15H14FNOHBr: C, 55.57; H, 4.66; N, 4.32. Found: C, 55.12; H, 4.62; N, 4.21.
- Treatment of (±)-[7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (1.2 g, 2.89 mmol) with sodium azide (0.752 g, 11.57 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-7-(4-fluorophenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with sulfided platinum on carbon (0.082 g, 5 wt. %) generally according to the procedure described for Example 1 provided 0.592 g (69%) of (±)-1-[7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 212-214° C.; Anal. calcd. for C15H14ClNOHCl: C, 60.83; H, 65.10; N, 4.73. Found: C, 59.99; H, 5.00; N, 4.47.
- Treatment of 0.226 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl[7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel AD, methanol) with hydrogen bromide (5.7 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 gave 0.113 g (58%) of (+)-1-[7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrobromide salt. [α]D 25=+15.72 (c 10.0 in methanol); mp 229-231° C.; Anal. calcd. for C15H14ClNOHBr: C, 52.89; H, 4.44; N, 4.11. Found: C, 52.98; H, 4.43; N, 4.05.
- Treatment of 0.229 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl[7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel AD, methanol) with hydrogen bromide (5.8 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 provided 0.121 g (61%) of (−)-1-[7-(4-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrobromide salt. [α]D 25=−18.40 (c 10.0 in methanol); mp 233-235° C.; Anal. calcd. for C15H14ClNOHBr: C, 52.89; H, 4.44; N, 4.11. Found: C, 52.78; H, 4.4; N, 3.98.
- Treatment of (±)-[7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (2.1 g, 5.11 mmol) with sodium azide (1.33 g, 20.96 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.125 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.860 g (58%) of (±)-1-[7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 176-178° C.; Anal. calcd. for C16H17NO2HCl: C, 65.86; H, 6.22; N, 4.80. Found: C, 65.02; H, 6.13; N, 4.57.
- Treatment of 0.314 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl[7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel AD, methanol) with palladium on carbon (0.031 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.160 g (68%) of (+)-1-[7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=+20.34 (c 10.0 in methanol); mp 183-186° C.; Anal. calcd. for C16H17NO2HCl: C, 65.86; H, 6.22; N, 4.8. Found: C, 62.45; H, 6.11; N, 4.38.
- Treatment of 0.312 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl[7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate with hydrogen bromide (12.0 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 provided 0.156 g (58%) of (−)-1-[7-(4-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrobromide salt. [α]D 25=−14.66 (c 10.0 in methanol); mp 185-188° C.; Anal. calcd. for C16H17NO2HBr: C, 57.16; H, 5.4; N, 4.17. Found: C, 56.53; H, 5.48; N, 4.01.
- Treatment of (±)-{7-[4-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate (3.3 g, 7.34 mmol) with sodium azide (1.91 g, 29.38 mmol) generally according to the procedure described for Intermediate 98 gave (±)-2-(azidomethyl)-7-[4-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.205 g, 10 wt. %) generally according to the procedure described for Example 1 provided 1.82 g (75%) of (±)-1-{7-[4-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine as a white solid, hydrochloride salt. mp >250° C.; Anal. calcd. for C16H14F3NOHCl: C, 58.28; H, 4.59; N, 4.25. Found: C, 57.47; H, 4.82; N, 3.65.
- Treatment of (±)-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (4.2 g, 9.34 mmol) with sodium azide (2.4 g, 37.38 mmol) generally according to the procedure described for Intermediate 98 gave (±)-2-(azidomethyl)-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with sulfided platinum on carbon (0.32 g, 5 wt. %) generally according to the procedure described for Example 1 provided 2.16 g (72%) of (±)-1-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 198-200° C.; Anal. calcd. for C15H13Cl2NOHCl: C, 54.49; H, 4.27; N, 4.24. Found: C, 54.5; H, 4.39; N, 4.16.
- Treatment of (±)-(5-chloro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.55 g, 1.33 mmol) with sodium azide (0.345 g, 5.31 mmol) generally according to the procedure described for Intermediate 98 provided 0.35 g of (±)-2-(azidomethyl)-5-chloro-7-phenyl-2,3-dihydro-1-benzofuran as a colorless oil. Treatment of the azide with sulfided platinum on carbon (90 mg, 5 wt. %) generally according to the procedure described for Example 1 provided 0.14 g (40%) of (±)-1-(5-chloro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. mp 258° C. (dec); Anal. calcd. for C15H14ClNOHCl: C, 60.83; H, 5.1; N, 4.73. Found: C, 60.13; H, 4.95; N, 4.6.
- Treatment of (±)-1-(5-chloro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine (0.8 g, 2.70 mmol) with diisopropylethylamine (1.05 g, 8.10) and benzyl chloroformate (0.83 g, 4.86 mmol) generally according to the procedure described for Intermediate 12 afforded (±)-benzyl (5-chloro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate. Chiral HPLC separation of (±)-benzyl (5-chloro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralpak AD, ethanol) provided two fractions. Fraction 1 (Rt=10.875 min, (Chiralpak AD, ethanol); Fraction 2 (Rt=15.590 min, (Chiralpak AD, ethanol). Treatment of 0.40 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl (5-chloro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralpak AD, ethanol) with hydrogen bromide (5 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 gave 0.27 g (77%) of (+)-1-(5-chloro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrobromide salt. [α]D 25=+0.7 (c 10.0 in methanol); mp 201-203° C.; Anal. calcd. for C15H14ClNOHBr: C, 52.89; H, 4.44; N, 4.11. Found: C, 52.96; H, 4.25; N, 3.88.
- Treatment of 0.23 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl (5-chloro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralpak AD, ethanol) with hydrogen bromide (3 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 gave 0.14 g (70%) of (−)-1-(5-chloro-7-phenyl-2,3-dihydro-1-12 benzofuran-2-yl)methanamine as a white solid, hydrobromide salt. [α]D 25=−0.6 (c 10.0 in methanol); mp 201-203° C.; Anal. calcd. for C15H14ClNOHBr: C, 52.89; H, 4.44; N, 4.11. Found: C, 52.76; H, 4.38; N, 4.06.
- Treatment of (±)-(5-chloro-7-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.40 g, 2.88 mmol) with 2-chlorophenylboronic acid (0.67 g, 1.49 mmol), dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II) dichloromethane adduct (0.25 g, 0.30 mmol), and potassium carbonate (0.83 g, 6.0 mmol) generally according to the procedure described for Intermediate 35 provided (±)-[5-chloro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate. Treatment of the tosylate with sodium azide (1.5 g, 23.1 mmol) generally according to the procedure described for Intermediate 98 provided (±)-2-(azidomethyl)-5-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with sulfided platinum on carbon (120 mg, 5 wt. %) generally according to the procedure described for Example 1 gave 0.70 g (80%) of (±)-1-[5-chloro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a yellow solid, hydrochloride salt. mp 231-234° C.; Anal. calcd. for C15H13Cl2NOHCl: C, 54.49; H, 4.27; N, 4.24. Found: C, 46.01; H, 4.17; N, 3.25.
- Treatment of (±)-2-(azidomethyl)-5-chloro-7-(3-methylphenyl)-2,3-dihydro-1-benzofuran (0.26 g, 0.87 mmol) with sulfided platinum on carbon (85 mg, 5 wt. %) generally according to the procedure described for Example 1 afforded 0.14 g (59%) of (±)-1-[5-chloro-7-(3-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 268-271° C.; Anal. calcd. for C16H16ClNOHCl: C, 61.95; H, 5.52; N, 4.52. Found: C, 61.01; H, 5.44; N, 4.35.
- Treatment of (±)-[5-chloro-7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (1.00 g, 2.24 mmol) with sodium azide (0.93 g, 14.3 mmol) generally according to the procedure described for Intermediate 98 provided 0.41 g of (±)-2-(azidomethyl)-5-chloro-7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with sulfided platinum on carbon (100 mg, 5 wt. %) generally according to the procedure described for Example 1 provided 0.31 g (50%) of (±)-1-[5-chloro-7-(3-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 195° C. (dec); Anal. calcd for C15H13Cl2NOHCl: C, 54.49; H, 4.27; N, 4.24. Found: C, 51.59; H, 4.21; N, 4.02.
- Treatment of (±)-(5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.18 g, 0.43 mmol) with sodium azide (0.11 g, 1.72 mmol) generally according to the procedure described for Intermediate 98 provided 0.13 g of (±)-2-(azidomethyl)-5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran. Treatment of the azide with sulfided platinum on carbon (120 mg, 5 wt. %) generally according to the procedure described for Example 1 gave 0.11 g (85%) of (±)-(5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylamine as a light yellow solid, hydrochloride salt. mp 230° C. (dec); Anal. calcd. for C13H12ClNOSHCl: C, 51.66; H, 4.34; N, 4.63. Found: C, 45.27; H, 4.19; N, 3.93.
- Treatment of 0.44 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl (5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralpak AD, hexane:ethanol 1:1) with hydrogen bromide (5 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 gave 0.20 g (52%) of (−)-(5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylamine as a white solid, hydrobromide salt. [α]D 25=−6.00 (c 10.0 in dimethylsulfoxide); mp 277-280° C.; Anal. calcd. for C13H12ClNOSHBr: C, 45.04; H, 3.78; N, 4.04. Found: C, 44.67; H, 3.64; N, 3.84.
- Treatment of 0.40 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl (5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Chiralpak AD, hexane:ethanol 1:1) with hydrogen bromide (5 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 gave 0.31 g (89%) of (+)-(5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylamine as a white solid, hydrobromide salt. [α]D 25=+5.01 (c 10.0 in dimethylsulfoxide); mp 277-280° C.; Anal. calcd. for C13H12ClNOSHBr: C, 45.04; H, 3.78; N, 4.04. Found: C, 44.88; H, 3.69; N, 3.86.
- To a solution of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl (5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (0.50 g, 1.25 mmol) in tetrahydrofuran (20 mL) was added lithium aluminum hydride (0.30 g, 7.5 mmol, 95 wt. %) and the reaction mixture was allowed to stir at room temperature for 5 h. The reaction mixture was quenched with ethyl acetate (5 mL) and partitioned between tetrahydrofuran (50 mL) and water (20 mL). The organic layer was separated and washed with saturated aqueous sodium bicarbonate (50 mL) and saturated aqueous sodium chloride (50 mL), was dried (magnesium sulfate), and the solvent was removed in vacuo to provide a crude oil. Purification by flash column chromatography (silica, dichloromethane:methanol 39:1) provided a light brown oil. The oil was re-dissolved in THF (50 mL), aqueous hydrogen chloride (1.0 N, 1.5 mL) was added, and the resulting precipitate was filtered and washed with diethyl ether (15 mL) to afford 0.14 g (35%) of (+)-N-[(5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]-N-methylamine as a white solid, hydrochloride salt. [α]D 25=+6.6 (c 10.0 in methanol); mp 263-266° C.; Anal. calcd. for C14H14ClNOSHCl: C, 53.17; H, 4.78; N, 4.43. Found: C, 52.5; H, 4.88; N, 4.26.
- Treatment of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl (5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (0.57 g, 1.43 mmol) with lithium aluminum hydride (0.30 g, 7.5 mmol, 95 wt. %) generally according to the procedure described for Example 93 afforded 0.26 g (58%) of (−)-N-[(5-chloro-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl]-N-methylamine as a white solid, hydrochloride salt. [α]D 25=−8.2 (c 10.0 in methanol); mp 263-266° C.; Anal. calcd. for C14H14ClNOSHCl: C, 53.17; H, 4.78; N, 4.43. Found: C, 53.8; H, 4.85; N, 4.25.
- Treatment of (±)-(5-chloro-7-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.37 g, 2.81 mmol) with 2-methylphenylboronic acid (0.65 g, 4.60 mmol), dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II) dichloromethane adduct (0.25 g, 0.30 mmol), and potassium carbonate (0.83 g, 6.0 mmol) generally according to the procedure described for Intermediate 35 provided (±)-[5-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate. Treatment of the tosylate with sodium azide (1.04 g, 16.1 mmol) generally according to the procedure described for Intermediate 98 provided (±)-2-(azidomethyl)-5-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with sulfided platinum on carbon (200 mg, 5 wt. %) generally according to the procedure described for Example 1 gave 0.70 g (80%) of (±)-1-[5-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a light yellow solid, hydrochloric salt. mp 160-163° C.; Anal. calcd. for C16H16ClNOHCl: C, 61.95; H, 5.52; N, 4.52. Found: C, 57.75; H, 5.4; N, 3.95.
- Treatment of (±)-1-[5-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine (0.65 g, 2.10 mmol) with diisopropylethylamine (0.813 g, 6.29) and benzyl chloroformate (0.71 g, 4.19 mmol) generally according to the procedure described for Intermediate 12 afforded (±)-benzyl[5-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate. Chiral HPLC separation of (±)-benzyl[5-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate. (Chiralpak AD, ethanol) provided two fractions. Fraction 1 (Rt=9.114 min, (Chiralpak AD, ethanol); Fraction 2 (Rt=11.426 min, (Chiralpak AD, ethanol). Treatment of 0.27 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl [5-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralpak AD, ethanol) with hydrogen bromide (5 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 gave 0.22 g (94%) of (+)-1-[5-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrobromide salt.
- [α]D 25=+1.5 (c 10.0 in methanol); mp 170-172° C.; Anal. calcd. for C16H16ClNOHBr: C, 54.18; H, 4.83; N, 3.95. Found: C, 53.28; H, 4.77; N, 3.66.
- Treatment of 0.25 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl[5-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralpak AD, ethanol) with hydrogen bromide (4 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 gave 0.17 g (78%) of (−)-1-[5-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrobromide salt. [α]D 25=−1.6 (c 10.0 in methanol); mp 170-172° C.; Anal. calcd. for C16H16ClNOHBr: C, 54.18; H, 4.83; N, 3.95. Found: C, 53.01; H, 4.76; N, 3.78.
- Treatment of (±)-(4-fluoro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (2.03 g, 5.09 mmol) with sodium azide (1.32 g, 20.38 mmol) generally according to the procedure described for Intermediate 98 provided (+)-2-(azidomethyl)-4-fluoro-7-phenyl-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.137 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.610 g (43%) of (±)-1-(4-fluoro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. mp 254-257° C.; Anal. calcd. for C15H14FNOHCl: C, 64.4; H, 5.40; N, 5.01. Found: C, 64.98; H, 5.48; N, 4.79.
- Treatment of (±)-[4-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (1.38 g, 3.35 mmol) with sodium azide (0.87 g, 13.38 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-4-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.083 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.561 g (57%) of (±)-1-[4-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 228-231° C.; Anal. calcd. for C16H16FNOHCl: C, 65.42; H, 5.83; N, 4.77. Found: C, 66.01; H, 5.88; N, 4.51.
- Treatment of (±)-[7-(2-chlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (6.65 g, 0.015 mol) with sodium azide (3.99 g, 0.061 mol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-7-(2-chlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran. Treatment of the azide with triphenylphosphine (4.18 g, 0.16 mol) generally according to the procedure described for Example 21 provided 3.37 g (70%) of (±)-1-[7-(2-chlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp >250° C. (dec); Anal. calcd. for C15H13ClFNOHCl: C, 57.34; H, 4.49; N, 4.46. Found: C, 57.45; H, 4.75; N, 4.22.
- Treatment of 1.22 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl[7-(2-chlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OJ, hexane:ethanol 1:1) with hydrogen bromide (20 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 22, afforded 0.319 (34%) of (+)-1-[7-(2-chlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=+1.18 (c 10.0, methanol); mp 206-209° C.; Anal. calcd. for C15H13ClFNOHCl: C, 57.34; H, 4.49; N, 4.46. Found: C, 57.52; H, 4.67; N, 4.44.
- Treatment of 1.19 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl[7-(2-chlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OJ, hexane:ethanol 1:1) with hydrogen bromide (20 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 22 provided 0.108 (12%) of (−)-1-[7-(2-chlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 206-209° C.; FAB HRMS calcd. for C15H14ClFNO [M+H]+: 278.0748. Found m/z 278.0730.
- Treatment of (±)-(5-fluoro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.50 g, 3.76 mmol) with sodium azide (0.979 g, 15.06 mmol) generally according to the procedure described for Intermediate 98 provided (±)-2-(azidomethyl)-5-fluoro-7-phenyl-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.101 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.719 g (68%) of (±)-1-(5-fluoro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. mp 255-260° C.; Anal. calcd. for C15H14FNOHCl: C, 64.4; H, 5.4; N, 5.01. Found: C, 64.16; H, 5.54; N, 4.73.
- Treatment of (±)-[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (1.48 g, 3.59 mmol) with sodium azide (0.933 g, 14.35 mmol) generally according to the procedure described for Intermediate 98 gave (±)-2-(azidomethyl)-5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.101 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.555 g (53%) of (±)-1-[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 229-234° C.; Anal. calcd. for C16H16FNOHCl.0.1H2O: C, 65.02; H, 5.87; N, 4.74. Found: C, 64.99; H, 5.83; N, 4.77.
- Treatment of 1.51 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OD, hexane:isopropanol 8:2) with palladium on carbon (0.151 g, 10 wt. %) generally according to the procedure described for Example 1 afforded 0.981 g (87%) of (+)-1-[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=+12.18 (c 10.0, methanol); mp 227-230° C.; Anal. calcd. for C16H16FNOHCl: C, 65.42; H, 5.83; N, 4.77. Found: C, 65.11; H, 5.78; N, 4.62.
- Treatment of 1.65 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OD, hexane:isopropanol 4:1) with palladium on carbon (0.133 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.966 g (78%) of (−)-1-[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=−11.4 (c 10.0, methanol); mp 227-230° C.; Anal. calcd. for C16H16FNOHCl: C, 65.42; H, 5.83; N, 4.77. Found: C, 65.28; H, 5.78; N, 4.66.
- Treatment of (±)-[5-fluoro-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (1.84 g, 4.42 mmol) with sodium azide (1.15 g, 17.67 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-5-fluoro-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.111 g, 10 wt. %) generally according to the procedure described for Example 1 provided 1.02 g (77%) of (±)-1-[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 240-247° C. (dec); Anal. calcd. for C15H13F2NOHCl: C, 60.51; H, 4.74; N, 4.7. Found: C, 60.33; H, 4.69; N, 4.4.
- Treatment of (±)-{5-fluoro-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate (5.34 g, 0.011 mol) with sodium azide (2.60 g, 0.04 mol) generally according to the procedure described for Intermediate 98 provided (±)-2-(azidomethyl)-5-fluoro-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran. Treatment of the azide with triphenylphosphine (2.89 g, 0.011 mol) generally according to the procedure described for Example 21 afforded 3.25 g (89%) of (±)-1-{5-fluoro-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine as a white solid, hydrochloride salt. mp 196-198° C. (dec); Anal. calcd. for C16H13F4NOHCl: C, 55.26; H, 4.06; N, 4.03. Found: C, 55.88; H, 4.26; N, 3.77.
- Treatment of (±)-(4,5-difluoro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl azide (0.60 g, 2.09 mmol) in methanol (40 mL) with sulfided platinum on carbon (0.15 g, 5 wt. %) generally according to the procedure described for Example 1 provided 0.60 g (96%) of (±)-(4,5-difluoro-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methylamine as a pink solid, hydrochloride salt. mp >240° C.; Anal. calcd. for C15H13F2NOHCl0.5H2O: C, 58.74; H, 4.93; N, 4.57. Found: C, 58.6; H, 4.56; N, 4.33.
- Treatment of (±)-[4,5-difluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl azide (0.85 g, 2.82 mmol) with sulfided platinum on carbon (0.30 g, 5 wt. %) generally according to the procedure described for Example 1 gave 0.78 g (67%) of (±)-1-[4,5-difluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a grey solid, hydrochloride salt. mp >224-227° C.; Anal. calcd. for C16H15F2NOHCl.0.4H2O: C, 60.25; H, 5.31; N, 4.39. Found: C, 59.98; H, 5.33; N, 4.39.
- Treatment of (±)-(5-chloro-7-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.10 g, 2.98 mmol) with sodium azide (1.5 g, 23.1 mmol) generally according to the procedure described for Intermediate 98 provided (±)-2-(azidomethyl)-5-chloro-7-methoxy-2,3-dihydro-1-benzofuran. Treatment of the azide with sulfided platinum on carbon (0.080 g, 5 wt. %) generally according to the procedure described for Example 1 afforded 0.415 g (56%) of (±)-1-(5-chloro-7-methoxy-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. mp 195-198° C.; Anal. calcd. for C10H12ClNO2HCl: C, 48.02; H, 5.24; N, 5.6. Found: C, 46.41; H, 5.09; N, 5.31.
- Treatment of (±)-(5-chloro-2-methyl-7-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (5.00 g, 10.0 mmol) with phenylboronic acid (1.83 g, 15.0 mmol), dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II) dichloromethane adduct (0.82 g, 1.0 mmol), and potassium carbonate (2.76 g, 20.0 mmol) generally according to the procedure described for Intermediate 35 gave (±)-(5-chloro-2-methyl-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. Treatment of (±)-(5-chloro-2-methyl-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (4.1 g, 9.5 mmol) with sodium azide (3.9 g, 60.0 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-5-chloro-2-methyl-7-phenyl-2,3-dihydro-1-benzofuran. Treatment of the azide with sulfided platinum on carbon (0.350 g, 5 wt. %) generally according to the procedure described for Example 1 provided 2.0 g (64%) of (±)-1-(5-chloro-2-methyl-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. mp 222-225° C.; Anal. calcd. for C16H16ClNOHCl: C, 61.95; H, 5.52; N, 4.52. Found: C, 60.82; H, 5.67; N, 4.37.
- Treatment of (±)-(5-chloro-2-methyl-7-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (5.00 g, 10.0 mmol), thiophene-3-boronic acid (1.92 g, 15.0 mmol), dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II) dichloromethane adduct (0.82 g, 1.0 mmol), and potassium carbonate (2.76 g, 20.0 mmol) generally according to the procedure described for Intermediate 35 provided (±)-(5-chloro-2-methyl-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. Treatment of the tosylate with sodium azide (2.00 g, 30.7 mmol) generally according to the procedure described for Intermediate 98 gave (±)-2-(azidomethyl)-5-chloro-2-methyl-7-thien-3-yl-2,3-dihydro-1-benzofuran. Treatment of the azide with sulfided platinum on carbon (0.250 g, 5 wt. %) generally according to the procedure described for Example 1 afforded 0.7 g (22%0 of (±)-(5-chloro-2-methyl-7-thien-3-yl-2,3-dihydro-1-benzofuran-2-yl)methylamine as a white solid, hydrochloride salt. mp 295-298° C. (dec); Anal. calcd. for C14H14ClNOSHCl: C, 53.17; H, 4.78; N, 4.43. Found: C, 52.80; H, 4.74; N, 4.24.
- Treatment of (±)-(5-chloro-2-methyl-7-{[(trifluoromethyl)sulfonyl]oxy}-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (2.90 g, 5.8 mmol), thiophene-2-boronic acid (1.11 g, 8.7 mmol), dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II) dichloromethane adduct (0.47 g, 0.58 mmol), and potassium carbonate (1.6 g, 11.6 mmol) generally according to the procedure described for Intermediate 35 gave (±)-(5-chloro-2-methyl-7-thien-2-yl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. Treatment of the tosylate with sodium azide (2.00 g, 30.7 mmol) generally according to the procedure described for Intermediate 98 provided (±)-2-(azidomethyl)-5-chloro-2-methyl-7-thien-2-yl-2,3-dihydro-1-benzofuran. Treatment of the azide with sulfided platinum on carbon (0.250 g, 5 wt. %) generally according to the procedure described for Example 1 afforded 0.58 g of (±)-(5-chloro-2-methyl-7-thien-2-yl-2,3-dihydro-1-benzofuran-2-yl)methylamine as a white solid, hydrochloride salt. mp 251-252° C.; Anal. calcd. for C14H14ClNOSHCl: C, 53.17; H, 4.78; N, 4.43. Found: C, 51.17; H, 4.48; N, 4.32.
- Treatment of 0.211 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl (7-tert-butyl-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methylcarbamate (Rt=4.39 min, Chiralpak OD, 2-butanol:carbon dioxide 2:8) with palladium on carbon (0.021 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.098 g (63%) of (−)-1-(7-tert-butyl-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. mp 157-159° C.; [α]D 25=−32.46 (c 10.0 in methanol); Anal. calcd. for C14H21NO2HCl: C, 61.87; H, 8.16; N, 5.15. Found: C, 59.03; H, 7.86; N, 4.77.
- Treatment of 0.264 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl [(7-tert-butyl-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl]carbamate (Rt=5.07 min, Chiralpak OD, 2-butanol:carbon dioxide 2:8) with palladium on carbon (0.026 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.098 g (50%) of (±)-1-(7-tert-butyl-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methanamine as a white solid, hydrochloride salt. [α]D 25=+31.9 (c 10.0 in methanol); mp 157-159° C.; Anal. calcd. for C14H21NO2HCl: C, 61.87; H, 8.16; N, 5.15. Found: C, 60.04; H, 8.09; N, 4.78.
- Treatment of (±)-{7-[(1E)-3,3-dimethylbut-1-enyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate (6.54 g, 16.92 mmol) with sodium azide (4.37 g, 67.68 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-{7-[(1E)-3,3-dimethylbut-1-enyl]-2,3-dihydro-1-benzofuran-2-yl}methyl azide. Treatment of the azide (1.78 g, 6.92 mmol) with triphenylphosphine (1.81 g, 6.92 mmol) generally according to the procedure described for Example 21 afforded 0.454 g (28%) of (±)-1-{7-[(1E)-3,3-dimethylbut-1-enyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine as a white solid, hydrochloride salt. mp 216-218° C.; Anal. calcd. for C15H21NOHCl: C, 67.28; H, 8.28; N, 5.23. Found: C, 66.19; H, 8.27; N, 5.14.
- Treatment of (±)-{7-[(1E)-3,3-dimethylbut-1-enyl]-2,3-dihydro-1-benzofuran-2-yl}methyl azide (1.82 g, 7.07 mmol) with palladium on carbon (0.18 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.642 g (34%) of (±)-1-[7-(3,3-dimethylbutyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 158-160° C.; Anal. calcd. for C15H23NOHCl: C, 66.77; H, 8.97; N, 5.19. Found: C, 66.31; H, 8.56; N, 5.09.
- Treatment of (±)-{7-[(E)-2-phenylvinyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate (6.53 g, 16.06 mmol) with sodium azide (4.17 g, 64.25 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-{7-[(E)-2-phenylvinyl]-2,3-dihydro-1-benzofuran-2-yl}methyl azide. Treatment of (±)-{7-[(E)-2-phenylvinyl]-2,3-dihydro-1-benzofuran-2-yl}methyl azide (2.2 g, 7.9 mmol) with triphenylphosphine (2.08 g, 7.9 mmol) generally according to the procedure described for Example 21 afforded 0.675 g (34%) of (±)-1-{7-[(E)-2-phenylvinyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine as a white solid, hydrochloride salt. mp 209-211° C.; Anal. calcd. for C17H17NOHCl: C, 70.95; H, 6.3; N, 4.87. Found: C, 69.63; H, 6.46; N, 4.72.
- Treatment of (±)-{7-[(E)-2-phenylvinyl]-2,3-dihydro-1-benzofuran-2-yl}methyl azide (2.2 g, 7.9 mmol) with palladium on carbon (0.22 g, 10 wt. %) generally according to the procedure described for Example 1 provided 1.1 g (48%) of (±)-1-[7-(2-phenylethyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 155-157° C.; Anal. calcd. for C17H19NOHCl: C, 70.46; H, 6.96; N, 4.83. Found: C, 70.11; H, 7.08; N, 4.62.
- Treatment of (±)-(4-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (5.0 g, 13.0 mmol), o-tolylboronic acid (2.66 g, 19.57 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.512 g, 0.651 mmol), and potassium carbonate (4.51 g, 32.63 mmol) generally according to the procedure described for Intermediate 37 provided 4.0 g (77%) of (±)-1-[4-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a yellow oil. Treatment of (±)-(4-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (3.8 g, 9.63 mmol) with sodium azide (2.5 g, 38.53 mmol) generally according to the procedure described for Intermediate 98 gave 2.39 g (94%) of [4-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl azide. Treatment of the azide with palladium on carbon (0.239 g, 10 wt. %) generally according to the procedure described for Example 1 provided 2.3 g (93%) of (±)-1-[4-(4-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 239-241° C.; Anal. calcd. for C16H17NOHCl: C, 69.69; H, 6.58; N, 5.08. Found: C, 69.36; H, 6.64; N, 4.93.
- Treatment of (±)-(4-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (5.0 g, 13.05 mmol) with 2-(trifluoromethyl)phenylboronic acid (3.72 g, 17.57 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.512 g, 0.652 mmol), and potassium carbonate (4.5 g, 32.62 mmol) generally according to the procedure described for Intermediate 37 provided 4.5 g (77%) of (±)-{4-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate as a yellow oil. Treatment of (±)-{4-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate (4.3 g, 9.59 mmol) with sodium azide (2.5 g, 38.46 mmol) generally according to the procedure described for Intermediate 98 gave 2.88 g (94%) of (±)-{4-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl azide. Treatment of the azide with palladium on carbon (0.28 g, 10 wt. %) generally according to the procedure described for Example 1 provided 2.46 g (83%) of (±)-1-{4-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine as a white solid, hydrochloride salt. mp 213-215° C.; Anal. calcd. for C16H14F3NOHCl: C, 58.28; H, 4.59; N, 4.25. Found: C, 58.13; H, 4.65; N, 4.13.
- Treatment of 0.825 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl({4-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)carbamate (Rt=5.701 min, Chiralcel OJ, ethanol:hexane 1:1) with palladium on carbon (0.082 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.480 g (76%) of (−)-1-{4-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine as a white solid, hydrochloride salt. [α]D 25=−81.36 (c 10.0 in methanol); mp 203-206° C.; Anal. calcd. for C16H14F3NOHCl: C, 58.28; H, 4.59; N, 4.25. Found: C, 58.12; H, 5.15; N, 3.92.
- Treatment of 0.800 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl({4-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)carbamate (Rt=7.122 min, Chiralcel OJ, ethanol:hexane 1:1) with palladium on carbon (0.080 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.334 g (54%) of (−)-1-{4-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine as a white solid, hydrochloride salt. [α]D 25=+79.42 (c 10.0 in methanol); mp 203-206° C.; Anal. calcd. for C16H14F3NOHCl: C, 58.28; H, 4.59; N, 4.25. Found: C, 57.98; H, 5.36; N, 3.85.
- Treatment of (±)-[4-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (2.27 g, 5.55 mmol) with sodium azide (1.44 g, 22.23 mmol) generally according to the procedure described for Intermediate 98 gave 1.41 g (91%) of (±)-[4-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl azide. Treatment of the azide with palladium on carbon (0.141 g, 10 wt. %) generally according to the procedure described for Example 1 provided 1.36 g (93%) of (±)-1-[4-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 254-256° C.; Anal. calcd. for C17H19NOHCl: C, 70.46; H, 6.96; N, 4.83. Found: C, 69.03; H, 7.05; N, 4.66.
- Treatment of 0.564 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[4-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Rt=4.818 min, Chiralcel OD, ethanol) with palladium on carbon (0.056 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.321 g (76%) of (+)-1-[4-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=+89.54 (c 10.0 in methanol); mp >250° C.; Anal. calcd. for C17H19NOHCl: C, 70.46; H, 6.96; N, 4.83. Found: C, 68.75; H, 7.1; N, 4.32.
- Treatment of 0.372 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[4-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Rt=6.985 min, Chiralcel OD, ethanol) with palladium on carbon (0.037 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.275 g (99%) of (−)-1-[4-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=−91.76 (c 10.0 in methanol); mp >250° C.; Anal. calcd. for C17H19NOHCl: C, 70.46; H, 6.96; N, 4.83. Found: C, 68.59; H, 6.85; N, 4.48.
- Treatment of 0.928 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl[7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methylcarbamate (Chiralcel OD, hexane:isopropanol 9:1) with palladium on carbon (0.092 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.549 g (75%) of (+)-1-[7-(2-methoxyphenyl) 2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=+9.90 (c 10.0 in methanol); mp 180-184° C.; Anal. calcd. for C16H17NO2HCl: C, 65.86; H, 6.22; N, 4.8. Found: C, 64.46; H, 6.24; N, 4.63.
- To a solution of (+)-benzyl {[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (0.530 g, 1.34 mmol) in acetonitrile (25 mL) cooled to 0° C. was added iodotrimethylsilane (1.07 g, 5.38 mmol) and the reaction mixture was allowed to stir for 90 min. The reaction mixture was quenched by the addition of aqueous hydrogen chloride (25 mL, 2.0 N) and washed with diethyl ether (50 mL). The aqueous layer was neutralized with aqueous sodium hydroxide (50 mL, 2.5 N) and extracted with dichloromethane (2×100 mL). The combined organic fractions were washed with water (75 mL), saturated aqueous sodium chloride (50 mL), dried (magnesium sulfate), and the solvent removed in vacuo to provide a crude oil. The oil was re-dissolved in isopropanol (2 mL) and hydrogen chloride (5.0 mL, 1.0 M in diethyl ether) was added. The resulting precipitate was filtered, washed (diethyl ether), and dried to afford 0.229 g (58%) of (−)-1-[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=−11.06 (c 10.0 in dimethylsulfoxide); mp 186-188° C.; Anal. calcd. for C15H14ClNOHCl: C, 60.83; H, 5.1; N, 4.73. Found C, 59.59; H, 5.13; N, 4.48.
- Treatment of (−)-benzyl {[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (0.480 g, 1.22 mmol) with iodotrimethylsilane (0.975 g, 4.87 mmol) generally according to the procedure described for Example 129 afforded 0.272 g (75%) of (+)-1-[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=+9.90 (c 10.0 in dimethylsulfoxide); mp 186-188° C.; Anal. calcd. for C15H14ClNOHCl: C, 60.83; H, 5.1; N, 4.73. Found C, 60.53; H, 5.39; N, 4.62.
- Treatment of (+)-benzyl {[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (0.326 g, 0.864 mmol) with palladium on carbon (0.033 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.195 g (81%) of (+)-1-[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=+18.32 (c 10.0 in methanol); mp 186-188° C.; Anal. calcd. for C15H14FNOHCl: C, 64.4; H, 5.4; N, 5.01. Found: C, 63.32; H, 5.1; N, 4.86.
- Treatment of (−)-benzyl {[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (0.330 g, 0.874 mmol) with palladium on carbon (0.033 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.135 g (55%) of (−)-1-[7-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=−19.00 (c 10.0 in methanol); mp 186-188° C.; Anal. calcd. for C15H14FNOHCl: C, 64.4; H, 5.4; N, 5.01. Found: C, 63.52; H, 5.16; N, 4.91.
- Treatment of (+)-benzyl {[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (1.36 g, 3.49 mmol) with palladium on carbon (0.136 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.70 g (79%) of (+)-1-[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 5=+32.44 (c 10.0 in methanol); mp 156-158° C.; Anal. calcd. for C16H17NO2HCl: C, 65.86; H, 6.22; N, 4.8. Found: C, 65.25; H, 6.18; N, 4.69.
- Treatment of (−)-benzyl {[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (1.38 g, 3.54 mmol) with palladium on carbon (0.138 g, 10 wt. %) generally according to the procedure described for Example 1 provided 0.558 g (62%) of (−)-1-[7-(3-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=−32.14 (c 10.0 in methanol); mp 156-158° C.; Anal. calcd. for C16H17NO2HCl: C, 65.86; H, 6.22; N, 4.8. Found: C, 65.03; H, 6.22; N, 4.7.
- Treatment of 0.680 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl({7-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)carbamate (Chiralpak OJ, isopropanol:carbon dioxide 15:85) with palladium on carbon (0.068 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.301 g (67%) of (−)-1-{7-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine as a white solid, hydrochloride salt. [α]D 25=−31.74 (c 10.0 in methanol); mp 184-186° C.; Anal. calcd. for C16H14F3NOHCl: C, 58.28; H, 4.59; N, 4.25. Found: C, 58.15; H, 4.57; N, 4.21.
- Treatment of 0.700 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl({7-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)carbamate (Chiralpak OJ, isopropanol:carbon dioxide 15:85) with palladium on carbon (0.070 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.328 g (61%) of (+)-1-{7-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine as a white solid, hydrochloride salt. [α]D 25=+31.66 (c 10.0 in methanol); mp 184-186° C.; Anal. calcd. for C16H14F3NOHCl: C, 58.28; H, 4.59; N, 4.25. Found: C, 57.96; H, 4.44; N, 4.16.
- Treatment of 0.720 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl({7-[4-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)carbamate
- (Chiralpak AD, methanol:water 95:5) with palladium on carbon (0.072 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.411 g (74%) of (+)-1-{7-[4-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine as a white solid, hydrochloride salt. [α]D 25=+15.90 (c 10.0 in methanol); mp 226-229° C.; Anal. calcd. for C16H14F3NOHCl: C, 58.28; H, 4.59; N, 4.25. Found: C, 57.31; H, 4.84; N, 4.09.
- Treatment of 0.740 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl({7-[4-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)carbamate (Chiralpak AD, methanol:water 95:5) with palladium on carbon (0.074 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.425 g (74%) of (−)-1-{7-[4-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine as a white solid, hydrochloride salt. [α]D 25=−14.98 (c 10.0 in methanol); mp 226-229° C.; Anal. calcd. for C16H14F3NOHCl: C, 58.28; H, 4.59; N, 4.25. Found: C, 57.48; H, 4.51; N, 4.09.
- Treatment of (±)-[7-(2,6-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanol (3.5 g, 13.35 mmol) with p-toluenesulfonyl chloride (3.05 g, 16.01 mol) generally according to the procedure described for Intermediate 10 gave 3.5 g (64%) of (±)-[7-(2,6-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate. Treatment of (±)-[7-(2,6-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (3.0 g, 7.20 mmol) with sodium azide (1.87 g, 28.8 mmol) generally according to the procedure described for Intermediate 98 gave (±)-[7-(2,6-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl azide. Treatment of the azide with palladium on carbon (0.20 g, 10 wt. %) generally according to the procedure described for Example 1 provided 1.69 g (90%) of (±)-1-[7-(2,6-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 219-222° C.; Anal. calcd. for C15H13F2NOHCl: C, 60.51; H, 4.74; N, 4.7. Found: C, 60.34; H, 4.87; N, 4.58.
- Treatment of (±)-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.75 g, 1.67 mmol) with sodium azide (0.43 g, 6.67 mmol) generally according to the procedure described for Intermediate 98 afforded 0.48 g (90%) of (±)-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl azide. Treatment of the azide with triphenylphosphine (0.393 g, 1.49 mmol) generally according to the procedure described for Example 21 afforded 0.348 g (71%) of (±)-1-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 206-208° C.; Anal. calcd. for C15H13Cl2NOHCl: C, 54.49; H, 4.27; N, 4.24. Found: C, 54.38; H, 4.36; N, 4.12.
- Treatment of 0.081 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Chiralpak AD, ethanol:hexane 1:1) with iodotrimethylsilane (0.153 g, 0.766 mmol) generally according to the procedure described for Example 129 gave 0.039 g (58%) of (−)-1-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=−29.8 (c 10.0 in dimethylsulfoxide); mp 207-209° C.; Anal. calcd. for C15H13Cl2NOHCl: C, 54.49; H, 4.27; N, 4.24. Found: C, 54.74; H, 3.97; N, 4.23.
- Treatment of 0.132 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Chiralpak AD, ethanol:hexane 1:1) with iodotrimethylsilane (0.247 g, 1.23 mmol) generally according to the procedure described for Example 129 gave 0.036 g (56%) of (+)-1-[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=+30.0 (c 10.0 in dimethylsulfoxide); mp 207-209° C.; Anal. calcd. for C15H13Cl2NOHCl: C, 54.49; H, 4.27; N, 4.24. Found: C, 54.43; H, 4.017; N, 4.19.
- Treatment of (±)-[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (3.0 g, 6.81 mmol) with sodium azide (1.77 g, 27.26 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran. Treatment of the azide with palladium on carbon (0.215 g, 10 wt. %) generally according to the procedure described for Example 1 provided 1.57 g (72%) of (±)-1-[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 175-178° C.; Anal. calcd. for C17H19NO3HCl: C, 63.45; H, 6.26; N, 4.35. Found: C, 62.59; H, 6.25; N, 4.01.
- Treatment of (+)-benzyl {[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (0.660 g, 1.57 mmol) with palladium on carbon (0.066 g, 10 wt. %) generally according to the procedure described for Example 1 afforded 0.242 g (48%) of (−)-1-[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a pale yellow solid, hydrochloride salt. [α]D 25=−4.7 (c 10.0 in methanol); mp 166-168° C.; Anal. calcd. for C17H19NO3HCl: C, 63.45; H, 6.26; N, 4.35. Found: C, 60.84; H, 6.51; N, 3.98.
- Treatment of (−)-benzyl {[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (0.638 g, 1.52 mmol) with palladium on carbon (0.066 g, 10 wt. %) generally according to the procedure described for Example 1 afforded 0.357 g (73%) of (+)-1-[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a pale yellow solid, hydrochloride salt. [α]D 25=+1.16 (c 10.0 in methanol); mp 166-168° C.; Anal. calcd. for C17H19NO3HCl: C, 63.45; H, 6.26; N, 4.35. Found: C, 61.94; H, 6.85; N, 3.76.
- Treatment of (±)-[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (4.3 g, 10.37 mmol) with sodium azide (3.03 g, 46.68 mmol) generally according to the procedure described for Intermediate 98 gave 2.91 g (98%) of (±)-[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl azide. Treatment of the azide with palladium on carbon (0.29 g, 10 wt. %) generally according to the procedure described for Example 1 afforded 2.3 g (76%) of (±)-1-[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp 222-224° C.; Anal calcd. for C15H13F2NOHCl: C, 60.51; H, 4.74; N, 4.7. Found C, 60.65; H, 4.76; N, 4.51.
- Treatment of (+)-benzyl {[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (1.1 g, 2.78 mmol) with palladium on carbon (0.135 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.312 g (43%) of (+)-1-[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=+3.58 (c 10.0 in dimethylsulfoxide); mp 222-224° C.; Anal. calcd. for C15H13F2NOHCl: C, 60.51; H, 4.74; N, 4.7. Found: C, 59.98; H, 4.7; N, 4.64.
- Treatment of (−)-benzyl {[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (0.612 g, 1.55 mmol) with palladium on carbon (0.061 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.268 g (66%) of (−)-1-[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=−4.66 (c 10.0 in dimethylsulfoxide); mp 222-224° C.; Anal. calcd. for C15H13F2NOHCl: C, 60.51; H, 4.74; N, 4.7. Found: C, 60.34; H, 4.58; N, 4.48.
- Treatment of (+)-benzyl {[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (2.06 g, 4.81 mmol) with iodotrimethylsilane (3.85 g, 19.24 mmol) generally according to the procedure described for Example 129 gave 0.933 g (85%) of (−)-1-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=−3.34 (c 10.0 in dimethylsulfoxide); mp 203-206° C.; Anal. calcd. for C15H13Cl2NOHCl: C, 54.59; H, 4.27; N, 4.24. Found: C, 53.69; H, 3.96; N, 3.99.
- Treatment of (−)-benzyl {[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (1.85 g, 4.32 mmol) with iodotrimethylsilane (3.45 g, 17.28 mmol) generally according to the procedure described for Example 129 gave 1.04 g (82%) of (+)-1-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=+2.7 (c 10.0 in dimethylsulfoxide); mp 201-204° C.; Anal. calcd. for C15H13Cl2NOHCl: C, 54.59; H, 4.27; N, 4.24. Found: C, 54.25; H, 4.12; N, 4.16.
- Treatment of 0.837 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl({5-fluoro-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)carbamate (Rt=4.965 min, Chiralcel AD, methanol) with iodotrimethylsilane (1.50 g, 7.51 mmol) generally according to the procedure described for Example 129 gave 0.301 g (51%) of (−)-1-{5-fluoro-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine as a white solid, hydrochloride salt. [α]D 25=−20.00 (c 10.0 in methanol); mp 183-188° C.; Anal. calcd. for C16H13F4NOHCl: C, 55.26; H, 4.06; N, 4.03. Found: C, 53.42; H, 4.1; N, 4.4.
- Treatment of 0.751 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl({5-fluoro-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl)carbamate (Rt=6.877 min, Chiralcel AD, methanol) with iodotrimethylsilane (0.675 g, 3.37 mmol) generally according to the procedure described for Example 129 gave 0.211 g (36%) of (+)-1-{5-fluoro-7-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methanamine as a white solid, hydrochloride salt. [α]D 25=+18.98 (c 10.0 in methanol); mp 193-197° C.; Anal. calcd. for C16H13F4NOHCl: C, 55.26; H, 4.06; N, 4.03. Found: C, 51.01; H, 3.76; N, 4.14.
- Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.305 mmol) with (2,3-dimethyl-phenyl)boronic acid (0.294 g, 1.96 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.041 g, 0.052 mmol), and potassium carbonate (0.41 g, 3.25 mmol) generally according to the procedure described for Intermediate 37 provided 0.335 g (62%) of (±)-[7-(2,3-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate. Treatment of (±)-[7-(2,3-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate with sodium azide (0.134 g, 2.06 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-7-(2,3-dichlorophenyl)-2,3-dihydro-1-benzofuran-7 amine. To a solution of (±)-2-(azidomethyl)-7-(2,3-dichlorophenyl)-2,3-dihydro-1-benzofuran-7 amine (0.135 g, 1.483 mmol) in tetrahydrofuran (5 mL) was added polymer supported triphenyl phosphine (0.152 g, 0.58 mmol) and the reaction mixture was allowed to stir at room temperature for 12 h. The reaction mixture was filtered (celite) and the solvent removed in vacuo to provide a colorless oil. The oil was re-dissolved in isopropanol (3 mL) and hydrogen chloride (1.0 N in diethyl ether, 10.0 mL) was added. The resulting precipitate was filtered, washed (diethyl ether), and dried to afford 0.075 g (54%) of (±)-1-[7-(2,3-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. mp >225° C.
- The title compound was prepared following the general procedure of Example 154 as a light yellow solid (2.91 g, 58%) from (O)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (6.0 g, 15.65 mmol) and (2,3-dimethoxyphenyl)boronic acid (4.27 g, 23.49 mmol). mp 219-222° C.
- Treatment of 1.46 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate Chiralcel OD, 2-butanol:carbon dioxide 3:7 with palladium on carbon (0.146 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.767 g (69%) of (−)-{[(−7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a tan solid, hydrochloride salt. [α]D 25=−65.6 (c 10.0 in methanol); mp 146-148° C.
- Treatment of 1.45 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate Chiralcel OD, 2-butanol:carbon dioxide 3:7 with palladium on carbon (0.146 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.86 g (77%) of (+)-{[(7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=+61.6 (c 10.0 in methanol); mp 146-148° C.
- Treatment of fraction 1 (0.437 g) obtained from the chiral HPLC separation of (±)-benzyl {[7-(4-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (Chiralcel AD, ethanol:hexane 1:10) in acetonitrile (25 mL) was cooled to 0° C. and treated with iodotrimethylsilane (0.883 g, 4.413 mmol) and the reaction mixture was allowed to stir at for 1 h. The solvent was removed in vacuo and the residue quenched with aqueous hydrogen chloride (2.0 N) (300 mL) and washed with diethyl ether (300 mL). The aqueous layer was separated, treated with 10% potassium hydroxide and dichloromethane (600 mL). The combined organic layers were washed with water (200 mL) and saturated aqueous sodium chloride (200 mL), was dried (magnesium sulfate), and the solvent was removed in vacuo to provide 0.20 g (60%) of (+) {[7-(4-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine (0.437 g, 1.07 mmol) as a white solid, hydrochloride salt. [α]D 25=+10.2 (c 10.0 in methanol); mp 190-191° C.
- The title compound was prepared (0.224 g, 74%) following the general procedure of Example 158 as a white solid, hydrochloride salt from (−)-benzyl {[7-(4-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (0.40 g, 0.981 mmol) and iodotrimethylsilane (0.785 g, 3.92 mmol). [α]D 25=−13.0 (c 10.0 in methanol); mp 190-191° C.
- The title compound was prepared (0.051 g, 26%) following the general procedure of Example 154 as a light yellow solid, hydrochloride salt from (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.31 mmol) and (2,3-difluorophenyl)boronic acid (0.618 g, 3.91 mmol). mp 219-222° C.
- The title compound was prepared (0.075 g, 40%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.31 mmol) and (2,5-dimethylphenyl)boronic acid (0.618 g, 3.91 mmol). mp >225° C.
- The title compound was prepared (0.043 g, 35%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.31 mmol) and (2,5-dimethoxyphenyl)boronic acid (0.356 g, 1.96 mmol). mp 128-132° C.
- The title compound was prepared (0.56 g, 45%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.43 g, 1.31 mmol) and (2,5-dichlorophenyl)boronic acid (1.07 g, 5.59 mmol). mp 203-205° C.
- Treatment of 0.771 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with trimethylsilyl iodide (1.44 g, 7.20 mmol) generally according to the procedure described for Example 158 gave 0.202 g (59%) of (+)-{[(7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt [α]D 25=+16.0 (c 10.0 in methanol); mp 181-183° C.
- Treatment of 0.710 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with trimethylsilyl iodide (1.33 g, 6.63 mmol) generally according to the procedure described for Example 158 gave 0.202 g (45%) of (−)-{[(−7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=−14.4 (c 10.0 in methanol); mp 184-186° C.
- Treatment of 2,4,6-trichlorobromobenzene (14.5 g, 55.69 mmol) with 2-methoxybenzeneboronic acid (12.69 g, 83.54 mol), dichlorobis(tri-o-tolylphosphine)palladium(II) (0.656 g, 0.835 mmol), and potassium carbonate (19.21 g, 139.22 mmol) generally according to the procedure described for Intermediate 37 provided 9.8 g (61%) of 2′,4′,6′-trichloro-1,1′-biphenyl-2-yl methyl ether. To a solution of 2′,4′,6′-trichloro-1,1′-biphenyl-2-yl methyl ether (9.8 g, 34.08 mmol) in dichloromethane (100 mL) cooled to −78° C. was added boron tribromide (9.38 g, 1.0 M in dichloromethane) generally according to the procedure described for Intermediate 163 provided 9.2 g of 2′,4′,6′-trichlorobiphenyl-2-ol as a yellow solid. Treatment of 2′,4′,6′-trichloro-1,1′-biphenyl-2-ol (9.17 g, 33.52 mmol) with potassium carbonate (18.53 g, 134.1 mmol) and allyl bromide (4.46 g, 36.87 mol), followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 provided 3-allyl-2′,4′,6′-trichloro-1,1′-biphenyl-2-ol. Treatment of 3-allyl-2′,4′,6′-trichloro-1,1′-biphenyl-2-ol. (10.35 g, 33.00 mmol) with 3-chloroperoxybenzoic acid (17.08 g, 99.00 mmol, 77%) followed by potassium carbonate (11.40 g, 82.51 mmol) generally according to the procedure described for Intermediate 9 afforded 10.4 g (95%) of (±)-[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanol. Treatment of (±)-[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanol (10.38 g, 31.49 mmol) with p-toluenesulfonyl chloride (7.20 g, 37.79 mol) generally according to the procedure described for Intermediate 10 gave 10.5 g (68%) of (±)-[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Treatment of (±)-[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (1.38 g, 2.85 mmol) with sodium azide (0.74 g, 11.4 mmol) generally according to the procedure described for Intermediate 98 afforded 0.93 g, (92%) of (±)-2-(azidomethyl)-7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran. To a solution of (±)-2-(azidomethyl)-7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran in tetrahydrofuran (75 mL) was added polymer-supported triphenylphosphine (1.36 g, 5.24 mmol) and the reaction was allowed to stir at room temperature 12 h. The reaction mixture was filtered (celite) and the solvent removed in vacuo to provide a crude oil. Purification by flash column chromatography (silica, 10% aqueous ammonium hydroxide in methanol:ethyl acetate 1:9) provided a colorless oil. The oil was re-dissolved in isopropanol (2 mL) and hydrogen chloride (6 mL, 1.0 M in diethyl ether) was added. The resulting precipitate was filtered, washed (diethyl ether), and dried to give 0.53 g (56%) of (±)-{[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. mp >225° C.
- The title compound was prepared (1.01 g, 13%) following the general procedure of Example 154 as a white solid, hydrochloride salt from 1-bromo-4-chloro-2-methyl-benzene (5.0 g, 24.33 mmol) and (2-methoxyphenyl)boronic acid (4.8 g, 31.63 mmol). mp 175-177° C.
- The title compound was prepared (0.68 g, 31%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.31 mmol) and (5-chloro-2-methylphenyl)boronic acid (0.334 g, 1.96 mmol). mp 146-150° C.
- The title compound was prepared (0.68 g, 35%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.31 mmol) and (5-chloro-2-methyoxlphenyl)boronic acid (0.365 g, 1.96 mmol). mp 149-152° C.
- The title compound was prepared (0.770 g, 69%) following the general procedure of Example 154 as a light brown solid, hydrochloride salt from (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (4.0 g, 10.44 mmol) and pyridine-3-ylboronic acid (3.85 g, 31.31 mmol). mp 158-162° C.
- The title compound was prepared (0.17 g, 78%) following the general procedure of Example 129 as a yellow solid, hydrochloride salt from (+)-benzyl {[7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (0.30 g, 0.832 mmol) and trimethylsilyl iodide (0.66 g, 3.33 mmol). [α]D 25=+27.2 (c 10.0 in methanol); mp 168-171° C.
- The title compound was prepared (0.172 g, 78%) following the general procedure of Example 129 as a light yellow solid, hydrochloride salt from (+)-benzyl {[7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate (0.33 g, 0.91 mmol) and trimethylsilyl iodide (0.73 g, 3.64 mmol). [α]D 25=−20.4 (c 10.0 in methanol); mp 168-171° C.
- To a solution of (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.5 g, 1.5 mmol) in toluene (20 mL) was added bromobenzene (0.23 g, 1.5 mmol), dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium(II) dichloromethane adduct (0.061 g, 0.075 mmol), 1,1′-bis(diphenylphosphino)ferrocene (0.125 g, 0.225 mmol), and sodium tert-butoxide (0.18 g, 1.875 mmol) and the reaction mixture was allowed to reflux 3 h. The solvent was removed in vacuo. The residue was washed with water (100 mL) and ethyl acetate (50 mL). The combined organic layers were washed with saturated aqueous sodium chloride, dried (magnesium sulfate), and the solvent removed in vacuo to provide a crude oil. Purification by flash column chromatography (silica, ethyl acetate:hexanes 3:10) afforded (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. Treatment of (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate with sodium azide (0.18 g, 2.78 mmol) generally according to the procedure described for Intermediate 98 afforded (±)-2-(azidomethyl)-N-phenyl-2,3-dihydro-1-benzofuran-7-amine. Treatment of the azide with polymer-supported triphenylphosphine (1.09 g, 4.17 mmol) generally according to the procedure described for Example 21 provided 0.042 g, (46%) of (±)-2-(aminomethyl)-N-phenyl-2,3-dihydro-1-benzofuran-7-amine as a white solid, fumarate salt. mp 216-218° C.
- The title compound was prepared (0.171 g, 15%) following the general procedure of Example 173 as a white solid, fumarate salt from (+)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) and 4-bromotoluene (0.51 g, 3.0 mmol). mp 226-228° C.
- The title compound was prepared (0.158 g, 18%) following the general procedure of Example 173 as a white solid, fumarate salt from (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mol) and 1-bromo-4-chlorobenzene (0.57 g, 3.0 mmol). mp 223-224° C.
- The title compound was prepared (0.048 g, 5%) following the general procedure of Example 173 as a yellow solid, fumarate salt from (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) and 1-bromo-4-methoxybenzene (0.896 g, 3.0 mmol). mp 178-180° C.
- The title compound was prepared (0.227 g, 18%) following the general procedure of Example 173 as a white solid, fumarate salt from (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) and 1-bromo-4-(trifluoromethyl)benzene (0.675 g, 3.0 mmol). mp 218-220° C.
- The title compound was prepared (0.066 g, 7%) following the general procedure of Example 173 as a white solid, fumarate salt from (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) and 1-bromo-4-fluorobenzene (0.52 g, 3.0 mmol). mp 234-236° C.
- The title compound was prepared (0.171 g, 15%) following the general procedure of Example 173 as a white solid, fumarate salt from (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) and 1-bromo-3,4-dichlorobenzene (0.68 g, 3.0 mmol). mp 229-231° C.
- The title compound was prepared (0.234 g, 24%) following the general procedure of Example 173 as a white solid, fumarate salt from (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) and 1-bromo-2,4-dimethylbenzene (0.55 g, 3.0 mmol). mp 232-234° C.
- The title compound was prepared (0.115 g, 12%) following the general procedure of Example 173 as a white solid, fumarate salt from (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) and 1-bromo-3,4-dimethylbenzene (0.55 g, 3.0 mmol). mp 232-234° C.
- The title compound was prepared (0.16 g, 17%) following the general procedure of Example 173 as a white solid, fumarate salt from (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) and 3-bromotoluene (0.51 g, 3.0 mmol). mp 217-218° C.
- The title compound was prepared (0.266 g, 28%) following the general procedure of Example 173 as a white solid, fumarate salt from (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) and 4-bromo-3-fluorobenzene (0.525 g, 3.0 mmol). mp 219-221° C.
- The title compound was prepared (0.195 g, 18%) following the general procedure of Example 173 as a white solid, fumarate salt from (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) and 1-bromo-3-(trifluoromethyl)benzene (0.675 g, 3.0 mmol). mp 212-214° C.
- The title compound was prepared (0.03 g, 3%) following the general procedure of Example 173 as a white solid, fumarate salt from (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) and 5-bromo-2-methoxytoluene (0.603 g, 3.0 mmol). mp 205-207° C.
- The title compound was prepared (0.185 g, 19%) following the general procedure of Example 173 as a white solid, fumarate salt from (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) and 1-bromo-3,5-difluorobenzene (0.57 g, 3.0 mmol). mp 229-231° C.
- The title compound was prepared (0.144 g, 11%) following the general procedure of Example 173 as a white solid, fumarate salt from (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) and 1-bromo-3-(trifluoromethoxy)benzene (0.723 g, 3.0 mmol). mp 199-201° C.
- The title compound was prepare (0.282 g, 27%) d following the general procedure of Example 173 as a white solid, fumarate salt from (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) and 4-bromo-2-chlorotoluene (0.63 g, 3.0 mmol). mp 225-227° C.
- The title compound was prepared (0.065 g, 6%) following the general procedure of Example 173 as a white solid, fumarate salt from (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) and 1-bromo-3,5-dichlorophenylbenzene (0.678 g, 3.0 mmol). mp >250° C.
- The title compound was prepared (0.284 g, 28%) following the general procedure of Example 173 as a white solid, fumarate salt from (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) and 4-bromo-3-chlorophenylbenzene (0.57 g, 3.0 mmol). mp 220-222° C.
- The title compound was prepared (0.298 g, 28%) following the general procedure of Example 173 as a white solid, fumarate salt from (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) and 5-bromo-3-chlorotoluene (0.629 g, 3.0 mmol). mp 225-227° C.
- The title compound was prepared (0.178 g, 18%) following the general procedure of Example 173 as a white solid, fumarate salt from (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) and 1-bromo-3,5-dimethylbenzene (0.57 g, 3.0 mmol). mp >250° C.
- The title compound was prepared (0.167 g, 16%) following the general procedure of Example 173 as a white solid, fumarate salt from (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) and 1-bromo-3-chloro-4-fluorobenzene (0.63 g, 3.0 mmol). mp 244-245° C.
- The title compound was prepared (0.070 g, 7%) following the general procedure of Example 173 as a white solid, fumarate salt from (±)-(7-anilino-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.96 g, 3.0 mmol) and 1-bromo-2-fluorobenzene (0.52 g, 3.0 mmol). mp 203-205° C.
- The title compound was prepared (0.16 g, 88%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate 1.0 g, 2.5 mmol) and (2-methoxyphenyl)boronic acid (0.57 g, 3.7 mmol). mp 219-220° C.
- The title compound was prepared (0.136 g, 46%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate 0.40 g, 1.0 mmol) and (3-fluorophenyl)boronic acid (0.22 g, 1.50 mmol). mp 193-194° C.
- The title compound was prepared (0.175 g, 64%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate 0.4 g, 0.996 mmol) and (3-methoxyphenyl)boronic acid (0.23 g, 1.51 mmol). mp 172-175° C.
- The title compound was prepared (0.178 g, 68%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.4 g, 0.996 mmol) and (3-methylphenyl)boronic acid (0.21 g, 1.51 mmol). mp 228-230° C.
- The title compound was prepared (0.160 g, 54%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 1.0 mmol) and (4-fluorophenyl)boronic acid (0.22 g, 1.50 mmol). mp 241-243° C.
- The title compound was prepared (0.173 g, 55%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 1.0 mmol) and (4-chlorophenyl)boronic acid (0.25 g, 1.50 mmol). mp 221-225° C.
- The title compound was prepared (0.211 g, 72%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.4 g, 0.996 mmol) and (4-methylphenyl)boronic acid (0.20 g, 1.51 mmol). mp 180-183° C.
- The title compound was prepared (0.209 g, 68%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate 0.4 g, 0.996 mmol) and (4-methoxyphenyl)boronic acid (0.23 g, 1.51 mmol). mp 175-176° C.
- The title compound was prepared (0.233 g, 82%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.4 g, 0.996 mmol) and 3-thienylboronic acid (0.19 g, 1.51 mmol). mp 272-274° C.
- The title compound was prepared (0.076 g, 33%) following the general procedure of Example 154 as a yellow solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.4 g, 0.996 mmol) and 3-furylboronic acid (0.18 g, 1.51 mmol). mp 236-239° C.
- The title compound was prepared (0.060 g, 11%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.60 g, 1.49 mmol) and 2-(tri-tert-butylstannyl)pyridine (2.6 g, 7.0 mmol 85%). mp 196-198° C.
- The title compound was prepared (0.072 g, 13%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.60 g, 1.49 mmol) and pyridin-3-ylboronic acid (0.55 g, 4.5 mmol). mp 173-175° C.
- Treatment of 0.58 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with hydrogen bromide (6 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 gave 0.181 g (15%) of (−)-{[5-fluoro-7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=−16.74 (c 10.0 in methanol); mp 88-90° C.
- Treatment of 0.59 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with hydrogen bromide (6 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 gave 0.181 g (15%) of (+)-{[5-fluoro-7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=+13.71 (c 10.0 in methanol); mp 86-89° C.
- The title compound was prepared (0.029 g, 5%) following the general procedure of Example 154 as a off-white solid, fumarate salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 0.996 mmol) and pyridin-4-ylboronic acid (0.18 g, 1.5 mmol). mp 170-171° C.
- The title compound was prepared (0.010 g, 5%) following the general procedure of Example 154 as a white solid, fumarate salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 0.996 mmol) and pyrimidin-5-ylboronic acid (0.52 g, 4.0 mmol). mp 65° C. (dec).
- The title compound was prepared (0.076 g, 35%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 0.996 mmol) and 2,3-dichlorophenylboronic acid (0.856 g, 4.5 mmol). mp 185-187° C.
- The title compound was prepared (0.143 g, 40%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.25 mmol) and 2,3-dimethoxyphenylboronic acid (0.68 g, 3.0 mmol). mp 90-93° C.
- Treatment of 0.60 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with trimethylsilyl iodide (1.10 g, 5.6 mmol) generally according to the procedure described for Example 129 gave 0.341 g (73%) of (−)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=−54.27 (c 10.0 in methanol); mp 173-175° C.
- Treatment of 0.80 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with trimethylsilyl iodide (1.44 g, 7.2 mmol) generally according to the procedure described for Example 129 gave 0.253 g (41%) of (+)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=+53.38 (c 10.0 in methanol); mp 166-167° C.
- The title compound was prepared (0.163 g, 52%) following the general procedure of Example 154 as a off-white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 0.996 mmol) and 2,4-difluorophenylboronic acid (0.708 g, 4.5 mmol). mp 218-220° C.
- The title compound was prepared (0.049 g, 14%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 0.996 mmol) and 2,4-dichlorophenylboronic acid (0.856 g, 4.5 mmol). mp 107-109° C.
- Treatment of 0.50 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with trimethylsilyl iodide (1.12 g, 4.40 mmol) generally according to the procedure described for Example 129 gave 0.234 g (60%) of (−)-{[5-chloro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=−2.07 (c 10.0 in methanol); mp 175-178° C.
- Treatment of 0.50 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with trimethylsilyl iodide (1.12 g, 4.40 mmol) generally according to the procedure described for Example 129 gave 0.220 g (56%) of (+)-{[5-chloro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [ ]D 25=+1.80 (c 10.0 in methanol); mp 203-205° C.
- The title compound was prepared (0.068 g, 20%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 0.996 mmol) and 2,4-dimethoxyphenylboronic acid (0.819 g, 4.5 mmol). mp 141-143° C.
- The title compound was prepared (0.068 g, 20%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 0.996 mmol) and 2,5-difluorophenylboronic acid (0.473 g, 3.0 mmol). mp 203-205° C.
- The title compound was prepared (0.098 g, 28%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 0.996 mmol) and 2,5-dichlorophenylboronic acid (0.57 g, 3.0 mmol). mp 165-166° C.
- The title compound was prepared (0.026 g, 9%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 0.996 mmol) and 2,5-dimethylphenylboronic acid (0.45 g, 3.0 mmol). mp 153-155° C.
- The title compound was prepared (0.064 g, 19%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 0.996 mmol) and 2,5-dimethoxyphenylboronic acid (0.54 g, 3.0 mmol). mp 120-122° C.
- The title compound was prepared (0.083 g, 26%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.41 g, 1.0 mmol) (5-methoxy-2-methylphenyl)boronic acid (0.5 g, 3.0 mmol). mp 233-235° C.
- The title compound was prepared (0.017 g, 5%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-fluoro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 1.0 mmol) (2-methoxy-5-methylphenyl)boronic acid (0.51 g, 3.0 mmol). mp 110-111° C.
- The title compound was prepared (0.140 g, 9%) following the general procedure of Example 166 as a white solid, hydrochloride salt from (2,6-difluorophenyl)boronic acid (4.0 g, 23.5 mmol) and (2-bromo-1,3-difluorobenzene (3.1 g, 15.7 mmol). mp 235-237° C.
- The title compound was prepared (0.109 g, 3%) following the general procedure of Example 166 as a white solid, hydrochloride salt from (2,6-dimethylphenyl)boronic acid (4.0 g, 23.0 mmol) and 2-bromo-1,3-dimethylbenzene (2.9 g, 15.6 mmol). mp 241-243° C.
- Treatment of 0.50 g of fraction 1 obtained from the chiral HPLC separation of (±)-[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate with sodium azide (0.38 g, 58.5 mmol) generally according to the procedure described for Example 1 gave 0.28 g (80%) of (+)-2-(azidomethyl)-7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran as a colorless oil. Treatment of the azide with triphenyl phosphine (0.74 g, 2.82 mmol) generally according to the procedure described for Example 154 afforded a white solid, hydrochloride salt; [α]D 25=+10.83 (c 10.0 in methanol); mp 192-194° C.
- Treatment of 0.50 g of fraction 2 obtained from the chiral HPLC separation of (±)-[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate with sodium azide (0.38 g, 58.5 mmol) generally according to the procedure described for Example 1 gave 0.22 g (63%) of (−)-2-(azidomethyl)-7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran as a colorless oil. Treatment of the azide with triphenyl phosphine (0.58 g, 2.22 mmol) generally according to the procedure described for Example 154 afforded a white solid, hydrochloride salt; [α]D 25=−6.6 (c 10.0 in methanol); mp 180-183° C.
- The title compound was prepared (0.21 g, 5%) following the general procedure of Example 166 as a white solid, hydrochloride salt from (5-fluoro-2-methoxyphenyl)boronic acid (3.0 g, 17.6 mmol) and 2-bromo-1,3-dichlorobenzene (2.65 g, 12.0 mmol). mp 204-205° C.
- The title compound was prepared (0.035 g, 30%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-fluoro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.14 g, 0.30 mmol) and cyclopropylamine (0.17 g, 3.0 mmol). mp 112-113° C.
- The title compound was prepared (0.066 g, 54%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-fluoro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.14 g, 0.30 mmol) and (aminomethyl)cyclopropane (0.21 g, 3.0 mmol). mp 130-133° C.
- The title compound was prepared (0.074 g, 61%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-fluoro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.14 g, 0.30 mmol) and cyclobutylamine (0.21 g, 3.0 mmol). mp 128-130° C.
- The title compound was prepared (0.068 g, 56%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-fluoro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.15 g, 0.32 mmol) and ethylamine (0.138 g, 3.2 mmol). mp 138.140° C.
- The title compound was prepared (0.092 g, 84%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-fluoro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.13 g, 0.28 mmol) and propylamine (0.165 g, 2.80 mmol). mp >250° C.
- The title compound was prepared (0.065 g, 66%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-fluoro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.14 g, 0.3 mmol) and isopropylamine (0.18 g, 3.0 mmol). mp 134-135° C.
- The title compound was prepared (0.069 g, 61%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-fluoro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.14 g, 0.3 mmol) and dimethylamine (0.14 g, 3.0 mmol). mp 199-201° C.
- The title compound was prepared (0.074 g, 69%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-fluoro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.12 g, 0.26 mmol) and piperidine (0.22 g, 2.6 mmol). mp 184-186° C.
- The title compound was prepared (0.069 g, 61%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-fluoro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.14 g, 0.30 mmol) and morpholine (0.26 g, 3.0 mmol). mp 196-199° C.
- The title compound was prepared (0.069 g, 61%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-fluoro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.13 g, 0.28 mmol) and pyrrolidine (0.20 g, 2.8 mmol). mp 65-67° C.
- The title compound was prepared (0.017 g, 39%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.505 g, 1.21 mmol) and (2-fluorophenyl)boronic acid (0.6 g, 4.3 mmol). mp 235-237° C.
- The title compound was prepared (0.017 g, 10%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.1 g, 2.42 mmol) and (2-methoxyphenyl)boronic acid (1.55 g, 9.68 mmol). mp 240-242° C.
- The title compound was prepared (0.017 g, 9%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.505 g, 1.21 mmol) and 3-furylboronic acid (0.54 g, 4.82 mmol). mp >250° C.
- The title compound was prepared (0.131 g, 56%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.505 g, 1.21 mmol) and 2,3-difluorophenylboronic acid (0.76 g, 4.81 mmol). mp 216-218° C.
- Treatment of 0.66 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[5-chloro-7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with hydrogen bromide (15 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 2 gave a crude salt. The salt was washed with saturated sodium bicarbonate (200 mL) and extracted with ethyl acetate (2×200 mL). The combined organic layers were washed with saturated aqueous sodium chloride (100 mL), dried (sodium sulfate), and the solvent was removed in vacuo to provide a colorless oil. The oil was re-dissolved in isopropanol (3 mL) and hydrogen chloride (1.0 N in diethyl ether, 10.0 mL) was added. The resulting precipitate was filtered, washed (diethyl ether), and dried to afford 0.391 g (76%) of (−)-{[5-chloro-7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=−13.8 (c 10.0 in methanol); mp 225-227° C.
- Treatment of 0.63 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[5-chloro-7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with hydrogen bromide (15 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 245 gave 0.387 g (66%) of (+)-{[5-chloro-7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=+10.6 (c 10.0 in methanol); mp 225-227° C.
- The title compound was prepared (0.160 g, 55%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.505 g, 1.21 mmol) and 2,3-dichlorophenylboronic acid (0.92 g, 4.81 mmol). mp 245-246° C.
- The title compound was prepared (0.072 g, 31%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.505 g, 1.21 mmol) and 2,3-dimethylphenylboronic acid (0.70 g, 4.81 mmol). mp 223-225° C.
- The title compound was prepared (0.137 g, 47%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.505 g, 1.21 mmol) and 2,3-dimethoxyphenylboronic acid (0.88 g, 4.81 mmol). mp 120-122° C.
- The title compound was prepared (0.134 g, 57%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.505 g, 1.21 mmol) and 2,4-difluorophenylboronic acid (0.76 g, 4.81 mmol). mp 216-218° C.
- The title compound was prepared (0.10 g, 42%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.505 g, 1.21 mmol) and 2,4-dichlorophenylboronic acid (0.92 g, 4.81 mmol). mp 202-204° C.
- Treatment of 0.67 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[5-chloro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with hydrogen bromide (15 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 245 gave 0.465 g (88%) of (−)-{[5-chloro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=−8.5 (c 10.0 in methanol); mp 237-239° C.
- Treatment of 0.42 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[5-chloro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with hydrogen bromide (15 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 245 gave 0.275 g (83%) of (±)-{[5-chloro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt; [α]D 25=+10.1 (c 10.0 in methanol); mp 240-242° C.
- The title compound was prepared (0.075 g, 45%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.505 g, 1.21 mmol) and 2,4-dimethoxyphenylboronic acid (0.88 g, 4.81 mmol). mp 220-222° C.
- The title compound was prepared (0.118 g, 42%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.505 g, 1.21 mmol) and 2,5-difluorophenylboronic acid (0.76 g, 4.81 mmol). mp 242-244° C.
- The title compound was prepared (0.137 g, 52%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.505 g, 1.21 mmol) and 2,5-dichlorophenylboronic acid (0.92 g, 4.81 mmol). mp 160-162° C.
- The title compound was prepared (0.159 g, 56%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.505 g, 1.21 mmol) and (5-chloro-2-methoxyphenyl)boronic acid (0.90 g, 4.81 mmol). mp 174-176° C.
- The title compound was prepared (0.121 g, 44%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.505 g, 1.21 mmol) and 3,4-difluorophenylboronic acid (0.76 g, 4.81 mmol). mp >250° C.
- The title compound was prepared (0.068 g, 47%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.505 g, 1.21 mmol) and 3-chloro-4-fluorophenylboronic acid (0.84 g, 4.81 mmol). mp 214-243° C.
- The title compound was prepared (0.246 g, 53%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.505 g, 1.21 mmol) and 2,6-dimethylphenylboronic acid (2.8 g, 18.66 mmol). mp 173-175° C.
- Treatment of 0.67 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with hydrogen bromide (15 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 245 provided 0.226 g (44%) of (−)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=−16.9 (c 10.0 in methanol); mp 200-202° C.
- Treatment of 0.66 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with hydrogen bromide (15 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 245 afforded 0.339 g (67%) of (+)-{[5-chloro-7-(2,6-dimethylphenyl) 2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=+14.9 (c 10.0 in methanol); mp 204-206° C.
- The title compound was prepared (0.072 g, 8%) following the general procedure of Example 166 as a white solid, hydrochloride salt from (5-chloro-2-methoxyphenyl)boronic acid (5.0 g, 26.88 mmol) and 2-bromo-1,3-dichlorobenzene (12.14 g, 53.76 mmol). mp 234-236° C.
- Treatment of 0.80 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[5-chloro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with trimethylsilyl iodide (1.46 g, 7.20 mmol) generally according to the procedure described for Example 158 afforded 0.341 g (56%) of (+)-{[5-chloro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=+33.61 (c 10.0 in methanol); mp >250° C.
- Treatment of 0.60 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl-{[5-chloro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with trimethylsilyl iodide (1.09 g, 5.60 mmol) generally according to the procedure described for Example 158 gave 0.253 g (55%) of (−)-{[5-chloro-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=−31.76 (c 10.0 in methanol); mp >250° C.
- The title compound was prepared (0.162 g, 45%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-chloro-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.20 mmol) and pyridin-3-ylboronic acid (0.50 g, 3.86 mmol). mp >250° C.
- The title compound was prepared (0.056 g, 34%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.15 g, 0.338 mmol) and cyclopropylamine (0.39 g, 6.77 mmol). mp 214-216° C.
- The title compound was prepared (0.058 g, 45%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.15 g, 0.338 mmol) and (aminomethyl)cyclopropane (0.50 g, 6.77 mmol). mp 203-205° C.
- The title compound was prepared (0.027 g, 21%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.15 g, 0.338 mmol) and cyclobutylamine (0.49 g, 6.77 mmol). mp 203-205° C.
- The title compound was prepared (0.079 g, 66%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.15 g, 0.338 mmol) and ethylamine (0.14 g, 3.38 mmol). mp 230-232° C.
- The title compound was prepared (0.064 g, 52%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.15 g, 0.338 mmol) and isopropylamine (0.40 g, 6.76 mmol). mp 213-215° C.
- The title compound was prepared (0.068 g, 57%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.15 g, 0.338 mmol) and dimethylamine (0.18 g, 6.76 mmol). mp 220-222° C.
- The title compound was prepared (0.095 g, 72%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.15 g, 0.338 mmol) and piperidine (0.58 g, 6.76 mmol). mp >235° C.
- The title compound was prepared (0.09 g, 68%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.15 g, 0.338 mmol) and morpholine (0.58 g, 6.76 mmol). mp 228-230° C.
- The title compound was prepared (0.55 g, 39%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.15 g, 0.338 mmol) and thiomorpholine (0.72 g, 6.76 mmol). mp 224-226° C.
- The title compound was prepared (0.094 g, 76%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.15 g, 0.338 mmol) and propylamine (0.40 g, 6.76 mmol) mp 200-202° C.
- The title compound was prepared (0.118 g, 81%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.15 g, 0.338 mmol) and piperazine (0.58 g, 6.76 mmol). mp 190-192° C.
- The title compound was prepared (0.094 g, 73%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-([5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.15 g, 0.338 mmol) and pyrrolidine (0.48 g, 6.76 mmol). mp 245-247° C.
- Treatment of 2-bromo-4-methylphenol (19.09 g, 102 mmol) with potassium carbonate (56.0 g, 400 mmol) and allyl bromide (15.96 g, 130 mmol), followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 provided 2-allyl-6-bromo-4-methylphenol. Treatment of 2-allyl-6-bromo-4-methylphenol (5.21 g, 23.0 mmol) with 3-chloroperoxybenzoic acid (9.13 g, 34.50 mmol, 77%) followed by potassium carbonate (7.9 g, 57.5 mmol) generally according to the procedure described for Intermediate 9 afforded 2.14 g (43%) of (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methanol. Treatment of (+)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methanol (2.41 g, 10.0 mmol) with p-toluenesulfonyl chloride (2.1 g, 11.0 mol) generally according to the procedure described for Intermediate 10 gave 3.31 g (84%) of (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a yellow oil. Treatment of (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.25 g, 0.63 mmol) and phenylboronic acid (0.23 g, 1.89 mmol) generally according to the procedure described for Intermediate 154 afforded 0.23 g, (93%) of (±)-(5-methyl-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. Treatment of the tosylate with sodium azide (0.19 g, 3.0 mmol) generally according to the procedure described for Intermediate 98 afforded 0.15 g (97%) of (±)-2-(azidomethyl)-5-methyl-7-phenyl-2,3-dihydro-1-benzofuran. Treatment of (±)-2-(azidomethyl)-5-methyl-7-phenyl-2,3-dihydro-1-benzofuran with polymer-supported triphenylphosphine (0.297 g, 1.13 mmol) according to the procedure described in Example 21 afforded 0.106 g (61%) of (±)-[(5-methyl-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine as a white solid, hydrochloride salt. mp 227-228° C.
- The title compound was prepared (0.111 g, 49%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.76 mmol) and 2-methylphenylboronic acid (0.32 g, 3.00 mmol). mp 260-263° C.
- The title compound was prepared (0.136 g, 46%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 1.00 mmol) and 2-fluorophenylboronic acid (0.42 g, 3.00 mmol). mp 232-234° C.
- The title compound was prepared (0.136 g, 44%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 1.00 mmol) and 2-methoxyphenylboronic acid (0.46 g, 3.00 mmol). mp 194-195° C.
- The title compound was prepared (0.135 g, 58%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.76 mmol) and 2-chlorophenylboronic acid (0.35 g, 2.28 mmol). mp 260-263° C.
- The title compound was prepared (0.135 g, 58%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.31 g, 0.76 mmol) and 2-(trifluoromethyl)phenylboronic acid (0.36 g, 2.28 mmol). mp 211-213° C.
- The title compound was prepared (0.028 g, 9%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 1.00 mmol) and 3-chlorophenylboronic acid (0.47 g, 3.00 mmol). mp 90-93° C.
- The title compound was prepared (0.107 g, 37%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 1.00 mmol) and 3-methylphenylboronic acid (0.41 g, 3.00 mmol). mp 235-237° C.
- The title compound was prepared (0.116 g, 38%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 1.00 mmol) and 4-methylphenylboronic acid (0.46 g, 3.00 mmol). mp 172-173° C.
- The title compound was prepared (0.112 g, 39%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 1.00 mmol) and 4-fluorophenylboronic acid (0.42 g, 3.00 mmol). mp 225-227° C.
- The title compound was prepared (0.097 g, 31%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 1.00 mmol) and 4-chlorophenylboronic acid (0.47 g, 3.00 mmol). mp 250-252° C.
- The title compound was prepared (0.116 g, 38%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.40 g, 1.00 mmol) and 4-methoxyphenylboronic acid (0.49 g, 3.00 mmol). mp 207-209° C.
- The title compound was prepared (0.164 g, 44%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.26 mmol) and 2,3-dimethoxyphenylboronic acid (0.69 g, 3.75 mmol). mp 97-99° C.
- Treatment of 0.59 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with trimethylsilyl iodide (1.08 g, 5.44 mmol) generally according to the procedure described for Example 158 gave 0.316 g (69%) of (−)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=−73.6 (c 10.0 in methanol); mp 120-123° C.
- Treatment of 0.52 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with trimethylsilyl iodide (0.956 g, 4.80 mmol) generally according to the procedure described for Example 158 afforded 0.127 g (32%) of (+)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=+74.51 (c 10.0 in methanol); mp 98-100° C.
- The title compound was prepared (0.124 g, 29%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.26 mmol) and 2,4-dichlorophenylboronic acid (0.72 g, 3.8 mmol). mp 172-173° C.
- Treatment of 0.50 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,4-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with trimethylsilyl iodide (0.905 g, 4.52 mmol) generally according to the procedure described for Example 129 provided 0.275 g (71%) of (−)-{[7-(2,4-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=−8.0 (c 10.0 in methanol); mp 173-176° C.
- Treatment of 0.48 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,4-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with trimethylsilyl iodide (0.868 g, 4.34 mmol) generally according to the procedure described for Example 129 afforded 0.254 g (68%) of (+)-{[7-(2,4-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=+7.25 (c 10.0 in methanol); mp 173-176° C.
- The title compound was prepared (0.121 g, 28%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.26 mmol) and 2,5-dichlorophenylboronic acid (0.72 g, 3.8 mmol). mp 155-156° C.
- The title compound was prepared (0.030 g, 11%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.26 mmol) and 2,6-dimethylphenylboronic acid (0.76 g, 4.00 mmol). mp 234-235° C.
- The title compound was prepared (0.030 g, 21%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.56 g, 1.41 mmol) and 2,6-dichlorophenylboronic acid (2.17 g, 14.10 mmol). mp 193-195° C.
- Treatment of 0.72 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,6-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with trimethylsilyl iodide (1.28 g, 7.20 mmol) generally according to the procedure described for Example 158 gave 0.227 g (41%) of (−)-{[7-(2,6-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=−28.9 (c 10.0 in methanol); mp 222-224° C.
- Treatment of 0.65 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,6-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with trimethylsilyl iodide (1.18 g, 6.00 mmol) generally according to the procedure described for Example 158 gave 0.259 g (51%) of (+)-{[7-(2,6-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride; [α]D 25=+33.82 (c 10.0 in methanol); salt. mp 222-224° C.
- To a solution of 4-ethylphenol (10.0 g, 82.0 mmol) in acetonitrile (250 mL) cooled to 0° C. was slowly added N-bromosuccinimide (16.0 g, 90 mmol) and the reaction mixture was allowed to stir at 0° C. for 1 h. The solvent was removed in vacuo and the reaction mixture was diluted with ice water (500 mL) and diethyl ether (500 mL). A solid precipitate was removed via filtration and the aqueous phase was separated and extracted with ethyl ether (2×200 mL). The combined organic extracts were washed with saturated aqueous sodium chloride (400 mL), dried (magnesium sulfate) and the solvent was removed in vacuo to give a crude oil. Purification by flash column chromatography (silica, ethyl acetate:hexanes 1:9) gave 8.35 g (51%). Treatment of 2-bromo-4-ethylphenol (8.35 g, 41.0 mmol) with potassium carbonate (14.3 g, 100 mmol) and allyl bromide (6.57 g, 130 mmol), followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 provided 2-allyl-6-bromo-4-ethylphenol. Treatment of 2-allyl-6-bromo-4-ethylphenol (5.18 g, 22.0 mmol) with 3-chloroperoxybenzoic acid (8.60 g, 33.0 mmol, 77%) followed by potassium carbonate (7.4 g, 55.0 mmol) generally according to the procedure described for Intermediate 9 afforded 3.94 g (70%) of (±)-(7-bromo-5-ethyl-2,3-dihydro-1-benzofuran-2-yl)methanol. Treatment of (±)-(7-bromo-5-ethyl-2,3-dihydro-1-benzofuran-2-yl)methanol (3.94 g, 15.0 mmol) with p-toluenesulfonyl chloride (3.5 g, 18.0 mol) generally according to the procedure described for Intermediate 10 gave 5.78 g (92%) of (±)-(7-bromo-5-ethyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a colorless oil. Treatment of (±)-(7-bromo-5-ethyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.73 mmol) and 2-methylphenylboronic acid (0.30 g, 2.19 mmol) generally according to the procedure described for Intermediate 35 afforded 0.30 g, (97%) of (±)-(5-ethyl-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. Treatment of the tosylate with sodium azide (0.23 g, 3.55 mmol) generally according to the procedure described for Intermediate 98 afforded 0.16 g (77%) of (±)-2-(azidomethyl)-5-ethyl-7-phenyl-2,3-dihydro-1-benzofuran. Treatment of (±)-2-(azidomethyl)-5-ethyl-7-phenyl-2,3-dihydro-1-benzofuran with polymer-supported triphenylphosphine (0.786 g, 0.869 mmol) according to the procedure described in Example 154 afforded 0.009 g (4%) of (±)-[(5-ethyl-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine as a white solid, hydrochloride salt. mp 198° C. (dec).
- The title compound was prepared (0.174 g, 74%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-ethyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.3 g, 0.73 mmol) and 2-chlorophenylboronic acid (0.34 g, 2.19 mmol). mp 268-271° C.
- To a solution of 4-isopropylphenol (13.38 g, 98.0 mmol) with N-bromosuccinimide (17.5 g, 98 mmol) generally according to the procedure described for Example 305 afforded 13.78 g (65%) of 2-bromo-4-isopropylphenol. Treatment of 2-bromo-4-isopropylphenol (13.74 g, 41.0 mmol) with potassium carbonate (22.0 g, 160 mmol) and allyl bromide (9.23 g, 76.8 mmol), followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 provided 2-allyl-6-bromo-4-isopropylphenol. Treatment of 2-allyl-6-bromo-4-isopropylphenol (6.85 g, 27.0 mmol) with 3-chloroperoxybenzoic acid (7.72 g, 27.0 mmol, 77%) followed by potassium carbonate (9.3 g, 67.5.0 mmol) generally according to the procedure described for Intermediate 9 afforded 1.12 g, (17%) of (±)-(7-bromo-5-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methanol. Treatment of (+)(7-bromo-5-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methanol (1.12 g, 4.6 mmol) with p-toluenesulfonyl chloride (1.32 g, 6.9 mmol) generally according to the procedure described for Intermediate 10 gave 1.90 g (97%) of (±)-(7-bromo-5-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a colorless oil. Treatment of (±)-(7-bromo-5-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.4 g, 0.94 mmol) and 2-methylphenylboronic acid (0.38 g, 2.82 mmol) generally according to the procedure described for Intermediate 35 afforded 0.19 g, (46%) of (5-isopropyl-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. Treatment of the tosylate with sodium azide (0.141 g, 2.17 mmol) generally according to the procedure described for Intermediate 98 afforded 0.11 g (83%) of (±)-2-(azidomethyl)-5-isopropyl-7-phenyl-2,3-dihydro-1-benzofuran. Treatment of (±)-2-(azidomethyl)-5-isopropyl-7-phenyl-2,3-dihydro-1-benzofuran with polymer-supported triphenylphosphine (0.188 g, 0.716 mmol) according to the procedure described in Example 154 afforded 0.055 g (48%) of (±)-[(5-isopropyl-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine as a white solid, hydrochloride salt. mp 221-222° C. (dec).
- The title compound was prepared (0.096 g, 30%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-isopropyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.4 g, 0.94 mmol) and 2-chlorophenylboronic acid (0.44 g, 2.81 mmol). mp 257-260° C.
- To a solution of 4-cyclopentylphenol (3.0 g, 18.0 mmol) in acetonitrile (30 mL) cooled to 0° C. was slowly added N-bromosuccinimide (3.29 g, 18 mmol) generally according to the procedure described for Example 309 afforded 3.75 g (84%) of 2-bromo-4-cyclopentylphenol Treatment of 2-bromo-4-cyclopentylphenol (3.75 g, 16.0 mmol) with potassium carbonate (5.4.0 g, 40 mmol) and allyl bromide (2.38 g, 20.8 mmol), followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 provided 2-allyl-6-bromo-4-cyclopentylphenol. Treatment of 2-allyl-6-bromo-4-cyclopentylphenol (3.0 g, 10.0 mmol) with 3-chloroperoxybenzoic acid (3.49 g, 12.0 mmol, 77%) followed by potassium carbonate (3.7 g, 25.0 mmol) generally according to the procedure described for Intermediate 9 afforded 1.68 g, (53%) of (±)-(7-bromo-5-cyclopentyl-2,3-dihydro-1-benzofuran-2-yl)methanol. Treatment of (±)-(7-bromo-5-cyclopentyl-2,3-dihydro-1-benzofuran-2-yl)methanol (1.68 g, 4.6 mmol) with p-toluenesulfonyl chloride (0.96 g, 5.0 mmol) generally according to the procedure described for Intermediate 10 gave 1.78 g (70%) of (±)-(7-bromo-5-cyclopentyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a colorless oil. Treatment of (±)-(7-bromo-5-cyclopentyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.5 g, 1.1 mmol) and 2-methylphenylboronic acid (0.45 g, 3.3 mmol) generally according to the procedure described for Intermediate 35 afforded 0.51 g, (99%) of (5-cyclopentyl-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. Treatment of the tosylate with sodium azide (0.239 g, 3.67 mmol) generally according to the procedure described for Intermediate 98 afforded 0.16 g (65%) of (±)-2-(azidomethyl)-5-isopropyl-7-phenyl-2,3-dihydro-1-benzofuran. Treatment of (±)-2-(azidomethyl)-5-cyclopentyl-7-phenyl-2,3-dihydro-1-benzofuran with polymer-supported triphenylphosphine (0.24 g, 0.48 mmol) according to the procedure described in Example 154 afforded 0.126 g (50%) of (±)-[(5-cyclopentyl-7-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl]amine as a white solid, hydrochloride salt. mp 190-193° C. (dec).
- The title compound was prepared (0.171 g, 42%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-cyclopentyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.10 mmol) and 2-chlorophenylboronic acid (0.52 g, 3.30 mmol). mp 268-271° C.
- Treatment of 3-bromo-4-hydroxybenzonitrile (10.0 g, 50.0 mmol) with potassium carbonate (27.9 g, 200 mmol) and allyl bromide (7.96 g, 66.0 mmol), followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 provided 3-allyl-5-bromo-4-hydroxybenzonitrile. Treatment of 3-allyl-5-bromo-4-hydroxybenzonitrile (4.63 g, 19.0 mmol) with 3-chloroperoxybenzoic acid (6.2 g, 35.93 mmol, 77%) followed by potassium carbonate (6.56 g, 47.5 mmol) generally according to the procedure described for Intermediate 9 afforded 1.30 g (426) of (±)-7-bromo-2-(hydroxymethyl)-2,3-dihydro-1-benzofuran-5-carbonitrile. Treatment of (±)-7-bromo-2-(hydroxymethyl)-2,3-dihydro-1-benzofuran-5-carbonitrile (1.3 g, 5.0 mmol) with p-toluenesulfonyl chloride (1.02 g, 5.4 mol) generally according to the procedure described for Intermediate 10 gave 1.5 g (72%) of (±)-(7-bromo-5-cyano-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. Treatment of (±)-(7-bromo-5-cyano-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.73 mmol) and 2-methylphenylboronic acid (0.3 g, 2.20 mmol) generally according to the procedure described for Intermediate 35 afforded 0.33 g, (99%) of (±)-[5-cyano-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate. Treatment of the tosylate with sodium azide (0.26 g, 4.0 mmol) generally according to the procedure described for Intermediate 98 afforded 0.17 g (74%) of (±)-2-(azidomethyl)-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-5-carbonitrile. Treatment of the azide with polymer-supported triphenylphosphine (0.24 g, 0.67 mmol) according to the procedure described in Example 154 afforded 0.118 g (53%) of (±)-2-(aminomethyl)-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-5-carbonitrile as a white solid, hydrochloride salt. mp 127-129° C.
- The title compound was prepared (0.27 g, 57%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-cyano-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.60 g, 1.50 mmol) and 2-chlorophenylboronic acid (0.69 g, 4.50 mmol). mp 173-175° C.
- To a solution of 4-(trifluoromethyl)phenol (5.0 g, 30.86 mmol) in carbon tetrachloride (100 mL) cooled to 0° C. was added dropwise over 4 hours bromine (4.94 g, 30.86 mmol) in carbon tetrachloride (25 mL) and the reaction mixture was allowed to stir at 0° C. for 24 h. The reaction mixture was washed with 10% aqueous sodium bisulfite (100 mL) and dichloromethane (300 mL). The aqueous phase was separated and extracted with dichloromethane (2×100 mL). The combined organic extracts were washed with saturated aqueous sodium chloride (400 mL), dried (magnesium sulfate) and the solvent was removed in vacuo to give a crude oil. Purification by flash column chromatography (silica, ethyl acetate:hexanes 2:8) gave 4.69 g (63%). Treatment of 2-bromo-4-(trifluoromethyl)phenol (4.69 g, 19.5 mmol) with sodium hydride (0.86 g, 21.0 mmol 60%) and allyl bromide (2.5 g, 21.0 mmol), followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 provided 2-allyl-6-bromo-4-(trifluoromethyl)phenol. Treatment of 2-allyl-6-bromo-4-(trifluoromethyl)phenol (3.66 g, 13.0 mmol) with 3-chloroperoxybenzoic acid (5.84 g, 26.0 mmol, 77%) followed by potassium carbonate (2.5 g, 19.5 mmol) generally according to the procedure described for Intermediate 9 afforded 3.50 g (91%) of (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methanol. Treatment of (±)-(7-bromo-5-(trifluoromethyl-2,3-dihydro-1-benzofuran-2-yl)methanol (3.5 g, 11.78 mmol) with p-toluenesulfonyl chloride (3.6 g, 17.67 mol) generally according to the procedure described for Intermediate 10 gave 5.0 g (94%) of (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. Treatment of (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 2-fluorophenylboronic acid (0.26 g, 2.13 mmol) generally according to the procedure described for Intermediate 35 afforded 0.11 g, (81%) of (±)-[7-(2-fluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate. Treatment of the tosylate with sodium azide (0.21 g, 3.2 mmol) generally according to the procedure described for Intermediate 98 afforded 0.16 g (88%) of (±)-2-(azidomethyl)-5-(trifluoromethyl)-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran. Treatment of (±)-2-(azidomethyl)-5-(trifluoromethyl)-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran with polymer-supported triphenylphosphine (0.20 g, 0.76 mmol) according to the procedure described in Example 154 afforded 0.053 g (24%) of (+)-[(5-(trifluoromethyl)-7-(phenyl)-1-2,3-dihydro-1-benzofuran-2-yl)methyl]amine as a white solid, hydrochloride salt. mp >250° C.
- The title compound was prepared (0.148 g, 65%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 2-methylphenylboronic acid (0.36 g, 2.64 mmol). mp 253-255° C.
- The title compound was prepared (0.27 g, 57%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.325 g, 0.72 mmol) and 2-chlorophenylboronic acid (0.169 g, 2.88 mmol). mp 192-194° C.
- The title compound was prepared (0.21 g, 87%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 2-methoxyphenylboronic acid (0.40 g, 2.64 mmol). mp 203-205° C.
- The title compound was prepared (0.088 g, 33%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 2-(trifluoromethyl)phenylboronic acid (0.50 g, 2.64 mmol). mp 195-197° C.
- The title compound was prepared (0.092 g, 40%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 3-methylphenylboronic acid (0.50 g, 2.64 mmol). mp >250° C.
- The title compound was prepared (0.068 g, 30%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 3-fluorophenylboronic acid (0.50 g, 2.64 mmol). mp >250° C.
- The title compound was prepared (0.102 g, 42%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 3-chlorophenylboronic acid (0.41 g, 2.64 mmol). mp 238-240° C.
- The title compound was prepared (0.125 g, 52%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 3-methoxyphenylboronic acid (0.40 g, 2.64 mmol). mp 202-204° C.
- The title compound was prepared (0.038 g, 14%) following the general procedure of Example 154 as a off-white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 3-(trifluoromethyl)phenylboronic acid (0.50 g, 2.64 mmol). mp 225-227° C.
- The title compound was prepared (0.102 g, 46%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 4-methylphenylboronic acid (0.36 g, 2.64 mmol). mp 248-250° C.
- The title compound was prepared (0.119 g, 52%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 4-fluorophenylboronic acid (0.37 g, 2.64 mmol). mp >250° C.
- The title compound was prepared (0.036 g, 15%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 4-chlorophenylboronic acid (0.42 g, 2.64 mmol). mp >250° C.
- The title compound was prepared (0.130 g, 54%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 4-methoxyphenylboronic acid (0.40 g, 2.64 mmol). mp 248-250° C.
- The title compound was prepared (0.105 g, 40%) following the general procedure of Example 154 as white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 4-(trifluoromethyl)phenylboronic acid (0.50 g, 2.64 mmol). mp >250° C.
- The title compound was prepared (0.124 g, 58%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 2,3-dimethylphenylboronic acid (0.40 g, 2.64 mmol). mp 198-200° C.
- The title compound was prepared (0.059 g, 25%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 2,3-difluorophenylboronic acid (0.30 g, 1.90 mmol). mp. 217-218° C.
- The title compound was prepared (0.045 g, 17%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 2,3-dichlorophenylboronic acid (0.50 g, 2.64 mmol). mp 152-155° C.
- The title compound was prepared (0.080 g, 31%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 2,3-dimethoxyphenylboronic acid (0.48 g, 2.64 mmol). mp 178-180° C.
- The title compound was prepared (0.163 g, 67%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 2,4-difluorophenylboronic acid (0.30 g, 1.90 mmol). mp 237-239° C.
- The title compound was prepared (0.098 g, 38%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 2,4-dimethoxyphenylboronic acid (0.48 g, 2.64 mmol). mp 210-212° C.
- The title compound was prepared (0.063 g, 26%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 3,4-difluorophenylboronic acid (0.42 g, 2.64 mmol). mp 237-239° C.
- The title compound was prepared (0.044 g, 19%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 3-chloro-4-fluorophenylboronic acid (0.465 g, 2.64 mmol). mp >250° C.
- The title compound was prepared (0.063 g, 26%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 2,5-difluorophenylboronic acid (0.42 g, 2.64 mmol). mp >250° C.
- The title compound was prepared (0.128 g, 48%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 2,5-dichlorophenylboronic acid (0.503 g, 2.64 mmol). mp 203-205° C.
- The title compound was prepared (0.012 g, 4%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 2,6-dimethylphenylboronic acid (0.40 g, 2.64 mmol). mp 198-200° C.
- The title compound was prepared (0.122 g, 48%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 4-butylphenylboronic acid (0.28 g, 1.57 mmol). mp 190-192° C.
- The title compound was prepared (0.102 g, 35%) following the general procedure of Example 154 as a white solid from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 4-cyanophenylboronic acid (0.23 g, 1.57 mmol). mp 238-239° C.
- The title compound was prepared (0.053 g, 25%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66° mmol) and 3-furylphenylboronic acid (0.22 g, 1.96 mmol). mp >250° C.
- The title compound was prepared (0.164 g, 73%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and 3-thienylboronic acid (0.34 g, 2.64 mmol). mp >250° C.
- The title compound was prepared (0.081 g, 30%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.30 g, 0.66 mmol) and pyridine-3-ylboronic acid (0.24 g, 1.95 mmol). mp 200-202° C.
- Treatment of 3-bromo-4-hydroxybiphenyl (15.7 g, 63.0 mmol) with potassium carbonate (34.84 g, 252.0 mmol) and allyl bromide (9.15 g, 75.63 mmol), followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 provided 3-allyl-5-bromobiphenyl-4-ol. Treatment of 3-allyl-5-bromobiphenyl-4-ol (17.8 g, 61.5 mmol) with 3-chloroperoxybenzoic acid (31.87 g, 184.67 mmol, 77%) followed by potassium carbonate (21.27 g, 153.89 mmol) generally according to the procedure described for Intermediate 9 afforded 15.8 g (84%) of (±)-(7-bromo-5-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanol. Treatment of (±)-(7-bromo-5-phenyl-2,3-dihydro-1-benzofuran-2-yl)methanol (15.8 g, 51.77 mmol) with p-toluenesulfonyl chloride (14.79 g, 77.65 mmol) generally according to the procedure described for Intermediate 10 gave 18.8 g (79%) of (±)-(7-bromo-5-phenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. Treatment of (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.5 g, 3.26 mmol) and phenylboronic acid (0.59 g, 4.89 mmol) generally according to the procedure described for Intermediate 35 afforded 1.17 g, (78%) of (±)-(5,7-diphenyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. Treatment of the tosylate with sodium azide (0.342 g, 5.26 mmol) generally according to the procedure described for Intermediate 98 afforded 0.39 g (91%) of (±)-2-(azidomethyl)-5,7-diphenyl-2,3-dihydro-1-benzofuran. Treatment of (±)-2-(azidomethyl)-5,7-diphenyl-2,3-dihydro-1-benzofuran with polymer-supported triphenylphosphine (0.314 g, 1.21 mmol) according to the procedure described in Example 154 afforded 0.34 g (99%) of (±)-(5,7-diphenyl-2,3-dihydro-1-benzofuran-2-yl)methylamine as a white solid, hydrochloride salt. mp >250° C.
- The title compound was prepared (0.157 g, 39%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.09 mmol) and 2-chlorophenylboronic acid (0.255 g, 1.63 mmol). mp >250° C.
- The title compound was prepared (0.166 g, 41%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.09 mmol) and 3-chlorophenylboronic acid (0.255 g, 1.63 mmol). mp 240-242° C.
- The title compound was prepared (0.092 g, 22%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.09 mmol) and 4-chlorophenylboronic acid (0.255 g, 1.63 mmol). mp 200-203° C.
- The title compound was prepared (0.153 g, 39%) following the general procedure of Example 154 as a light yellow solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.09 mmol) and 2-fluorophenylboronic acid (0.228 g, 1.63 mmol). mp >250° C.
- The title compound was prepared following the general procedure of Example 154 as a light yellow solid, hydrochloride salt (0.107 g, 28%) from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.09 mmol) and 3-fluorophenylboronic acid (0.228 g, 1.63 mmol). mp >250° C.
- The title compound was prepared (0.106 g, 27%) following the general procedure of Example 154 as a light yellow solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.09 mmol) and 4-fluorophenylboronic acid (0.228 g, 1.63 mmol). mp >250° C.
- The title compound was prepared (0.148 g, 39%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.09 mmol) and 2-methylphenylboronic acid (0.222 g, 1.63 mmol). mp 225-227° C.
- The title compound was prepared (0.080 g, 21%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.09 mmol) and 3-methylphenylboronic acid (0.222 g, 1.63 mmol). mp 246-249° C.
- The title compound was prepared (0.094 g, 25%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.09 mmol) and 4-methylphenylboronic acid (0.222 g, 1.63 mmol). mp 159-162° C.
- The title compound was prepared (0.157 g, 38%) following the general procedure of Example 154 as white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.09 mmol) and (2,4-difluorophenyl)boronic acid (0.258 g, 1.63 mmol). mp 159-162° C.
- The title compound was prepared (0.168 g, 38%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methyl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.09 mmol) and (2,5-dichlorophenyl)boronic acid (0.312 g, 1.63 mmol). mp 159-162° C.
- The title compound was prepared (0.121 g, 49%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.21 mmol) and 2-fluorophenylboronic acid (0.68 g, 4.84 mmol). mp >250° C.
- The title compound was prepared (0.121 g, 46%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.21 mmol) and 2-chlorophenylboronic acid (0.75 g, 4.84 mmol). mp 179-181° C.
- The title compound was prepared (0.118 g, 48%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.21 mmol) and 2-methylphenylboronic acid (0.66 g, 4.84 mmol). mp 187-189° C.
- The title compound was prepared (0.181 g, 33%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (1.0 g, 2.42 mmol) and 2-methoxyphenylboronic acid (1.55 g, 9.68 mmol). mp 190-192° C.
- The title compound was prepared (0.110 g, 46%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.21 mmol) and 3-thienylboronic acid (0.62 g, 4.84 mmol). mp 230-232° C.
- The title compound was prepared (0.141 g, 54%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.26 mmol) and 2,3-difluorophenylboronic acid (0.76 g, 4.84 mmol). mp 224-226° C.
- The title compound was prepared (0.087 g, 30%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.26 mmol) and 2,3-dichlorophenylboronic acid (0.92 g, 4.84 mmol). mp 159-161° C.
- The title compound was prepared (0.132 g, 52%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.26 mmol) and 2,3-dimethylphenylboronic acid (0.70 g, 4.84 mmol). mp 129-130° C.
- The title compound was prepared (0.164 g, 63%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.26 mmol) and 2,4-difluorophenylboronic acid (0.76 g, 4.84 mmol). mp 226-228° C.
- The title compound was prepared (0.091 g, 32%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.26 mmol) and 2,4-dichlorophenylboronic acid (0.92 g, 4.84 mmol). mp 180-182° C.
- The title compound was prepared (0.148 g, 56%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.26 mmol) and 2,5-difluorophenylboronic acid (0.76 g, 4.84 mmol). mp 118-120° C.
- The title compound was prepared (0.048 g, 16%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.26 mmol) and 2,5-dichlorophenylboronic acid (0.92 g, 4.84 mmol). mp 140-142° C.
- Treatment of 0.50 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,5-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with hydrogen bromide (14 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 245 gave 0.297 g (75%) of (+)-{[7-(2,5-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=+6.62 (c 10.0 in methanol); mp 148-150° C.
- Treatment of 0.135 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,5-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with hydrogen bromide (3 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 245 gave 0.047 g (44%) of (−)-{[7-(2,5-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=−6.73 (c 10.0 in methanol); mp 148-150° C.
- The title compound was prepared (0.134 g, 53%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.26 mmol) and 2,5-dimethylphenylboronic acid (0.70 g, 4.84 mmol). mp 214-216° C.
- The title compound was prepared (0.070 g, 24%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.26 mmol) and 2,5-dimethoxyphenylboronic acid (0.88 g, 4.84 mmol). mp 128-130° C.
- The title compound was prepared (0.169 g, 60%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.26 mmol) and 5-chloro-2-methoxyphenylboronic acid (0.90 g, 4.84 mmol). mp 172-174° C.
- The title compound was prepared (0.178 g, 65%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.26 mmol) and 3-chloro-4-fluorophenylboronic acid (0.84 g, 4.84 mmol). mp 220-222° C.
- The title compound was prepared (0.170 g, 67%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-(7-bromo-5-methoxy-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.50 g, 1.26 mmol) and 2,6-dimethylphenylboronic acid (0.92 g, 4.84 mmol). mp 212-214° C.
- Treatment of 4-bromo-2-fluorophenol (25.0 g, 130.9 mmol) with potassium carbonate (72.35 g, 523.53 mmol) and allyl bromide (19.00 g, 157.06 mmol), followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 provided 2-allyl-4-bromo-6-fluorophenol. Treatment of 2-allyl-4-bromo-6-fluorophenol (25.6 g, 110.8 mmol) with 3-chloroperoxybenzoic acid (57.36 g, 332.38 mmol, 77%) followed by potassium carbonate (38.28 g, 277.0 mmol) generally according to the procedure described for Intermediate 9 afforded 19.1 g (70%) of (±)-(7-fluoro-5-bromo-2,3-dihydro-1-benzofuran-2-yl)methanol. Treatment of (±)-(7-fluoro-5-bromo-2,3-dihydro-1-benzofuran-2-yl)methanol (18.61 g, 75.3 mmol) with p-toluenesulfonyl chloride (17.22 g, 90.34 mmol) generally according to the procedure described for Intermediate 10 gave 22.6 g (75%) of (±)-(7-fluoro-5-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. Treatment of (±)-(7-fluoro-5-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.5 g, 1.25 mmol) and 2-methylphenylboronic acid (0.254 g, 1.87 mmol) generally according to the procedure described for Intermediate 35 afforded 0.282 g, (55%) of (±)-([7-fluoro-5-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate. Treatment of the tosylate with sodium azide (0.19 g, 3.0 mmol) generally according to the procedure described for Intermediate 98 afforded 0.17 g (99%) of (±)-2-(azidomethyl)-7-fluoro-5-(2-methylphen yl)-2,3-dihydro-1-benzofuran. Treatment of (±)-2-(azidomethyl)-7-fluoro-5-(2-methylphenyl)-2,3-dihydro-1-benzofuran with polymer-supported triphenylphosphine (0.30 g, 3.0 mmol) according to the procedure described in Example 154 afforded 0.038 g (22%) of (±)-([7-fluoro-5-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl]amine as a white solid, hydrochloride salt. mp >250° C.
- The title compound was prepared (0.026 g, 24%) following the general procedure of Example 154 as a white solid, hydrochloride salt from of (±)-(7-fluoro-5-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. (0.50 g, 1.25 mmol) and 2-chlorophenylboronic acid (0.292 g, 1.89 mmol). mp >250° C.
- The title compound was prepared (0.055 g, 38%) following the general procedure of Example 154 as a white solid, hydrochloride salt from of (±)-(7-fluoro-5-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. (0.50 g, 1.25 mmol) and 2-fluorophenylboronic acid (0.292 g, 1.89 mmol). mp >250° C.
- The title compound was prepared (0.059 g, 38%) following the general procedure of Example 154 as a white solid, hydrochloride salt from of (±)-(7-fluoro-5-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. (0.50 g, 1.25 mmol) and [2-(trifluoromethyl)phenyl]boronic acid (0.355 g, 1.89 mmol). mp 189-194° C. (dec).
- The title compound was prepared (0.050 g, 38%) following the general procedure of Example 154 as a white solid, hydrochloride salt from of (±)-(7-fluoro-5-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. (0.50 g, 1.25 mmol) and 2-methoxyphenylboronic acid (0.284 g, 1.89 mmol). mp 203-207° C. (dec).
- The title compound was prepared (0.057 g, 40%) following the general procedure of Example 154 as a white solid, hydrochloride salt from of (±)-(7-fluoro-5-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. (0.50 g, 1.25 mmol) and 3-methylphenylboronic acid (0.254 g, 1.89 mmol). mp >250° C.
- The title compound was prepared (0.071 g, 52%) following the general procedure of Example 154 as a white solid, hydrochloride salt from of (±)-(7-fluoro-5-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. (0.50 g, 1.25 mmol) and 3-fluorophenylboronic acid (0.292 g, 1.89 mmol). mp >250° C.
- The title compound was prepared (0.065 g, 44%) following the general procedure of Example 154 as a white solid, hydrochloride salt from of (±)-(7-fluoro-5-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. (0.50 g, 1.25 mmol) and 3-chlorophenylboronic acid (0.292 g, 1.89 mmol). mp >250° C.
- The title compound was prepared (0.055 g, 37%) following the general procedure of Example 154 as a white solid, hydrochloride salt from of (±)-(7-fluoro-5-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. (0.50 g, 1.25 mmol) and 3-(trifluoromethyl)phenylboronic acid (0.355 g, 1.89 mmol). mp >250° C.
- The title compound was prepared (0.042 g, 32%) following the general procedure of Example 154 as a white solid, hydrochloride salt from of (±)-(7-fluoro-5-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. (0.50 g, 1.25 mmol) and 3-methoxyphenylboronic acid (0.284 g, 1.89 mmol). mp >250° C.
- The title compound was prepared (0.061 g, 50%) following the general procedure of Example 154 as a white solid, hydrochloride salt from of (±)-(7-fluoro-5-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. (0.50 g, 1.25 mmol) and 4-methylphenylboronic acid (0.254 g, 1.89 mmol). mp >250° C.
- The title compound was prepared (0.085 g, 55%) following the general procedure of Example 154 as a white solid, hydrochloride salt from of (±)-(7-fluoro-5-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. (0.50 g, 1.25 mmol) and 4-chlorophenylboronic acid (0.292 g, 1.89 mmol). mp >250° C.
- The title compound was prepared (0.060 g, 47%) following the general procedure of Example 154 as a white solid, hydrochloride salt from of (±)-(7-fluoro-5-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. (0.50 g, 1.25 mmol) and 4-fluorophenylboronic acid (0.292 g, 1.89 mmol). mp >250° C.
- The title compound was prepared (0.041 g, 26%) following the general procedure of Example 154 as a white solid, hydrochloride salt from of (±)-(7-fluoro-5-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. (0.50 g, 1.25 mmol) and [4-(trifluoromethyl)phenyl]boronic acid (0.355 g, 1.89 mmol). mp >250° C.
- The title compound was prepared (0.66 g, 51%) following the general procedure of Example 154 as a white solid, hydrochloride salt from of (±)-(7-fluoro-5-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate. (0.50 g, 1.25 mmol) and 4-methoxyphenylboronic acid (0.284 g, 1.89 mmol). mp >250° C.
- To a solution of (±)-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl 4-methylbenzenesulfonate (0.2 g, 0.46 mmol) in dimethylsulfoxide (5 mL) was added ethylamine (0.20 g, 4.4 mmol) and the reaction mixture was allowed to stir at 60° C. for 12 h. The reaction was diluted with water (10 mL) and ethyl acetate (2×10 mL). The combined organic layers were washed with water (3×20 mL) and saturated aqueous sodium chloride (20 mL), dried (magnesium sulfate) and the solvent was removed in vacuo to give an oil. The oil was re-dissolved in isopropanol (0.5 mL) and hydrogen chloride (0.5 mL, 1.0 M in diethyl ether) was added. The resulting precipitate was filtered, washed (diethyl ether), to give 0.084 g (57%) of (±)-N-{[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}ethanamine as a white solid, hydrochloride salt. mp 195-197° C.
- The title compound was prepared (0.057 g, 39%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl 4-methylbenzenesulfonate (0.2 g, 0.46 mmol) and cyclopropylamine (0.254 g, 4.40 mmol). mp 182-184° C.
- The title compound was prepared (0.077 g, 39%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl 4-methylbenzenesulfonate (0.2 g, 0.46 mmol) and cyclobutylamine (0.317 g, 4.40 mmol). mp 185-188° C.
- The title compound was prepared (0.054 g, 35%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl 4-methylbenzenesulfonate (0.2 g, 0.46 mmol) and isopropylamine (0.258 g, 4.40 mmol). mp 182-184° C.
- Treatment of 1-bromo-2-methylbenzene (10.06 g, 58.84 mmol) with (2-fluoro-6-methyoxyphenyl)boronic acid (5.0 g, 29.42 mol tetrakis(triphenylphosphine)palladium(0) (2.5 g, 2.16 mmol), and sodium carbonate (6.2 g, 58.84 mmol) generally according to the procedure described for Intermediate 37 provided 2.35 g (37%) of 6-fluoro-2′-methylbiphenyl-2-yl methyl ether. A solution of 6-fluoro-2′-methylbiphenyl-2-yl methyl ether (2.35 g, 10.86 mmol) in hydrogen bromide (40 mL, 30 wt. % in acetic acid) was heated to 55° C. for 12 h. The reaction mixture was concentrated under in vacuo and the crude residue diluted with ethyl acetate (200 mL). The organic layer was carefully extracted with saturated bicarbonate solution (3×200 mL) was dried (magnesium sulfate), and the solvent was removed in vacuo to provide a crude oil. Treatment of 6-fluoro-2′-methybiphenyl-2-ol (2.17 g, 10.84 mmol) with sodium hydride (0.65 g, 16.26 mmol, 60 wt. %) and allyl bromide (0.96 g, 16.26 mmol), followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 provided 3-allyl-6-fluoro-2′-methylbiphenyl-2-ol. Treatment of 3-allyl-6-fluoro-2′-methylbiphenyl-2-ol (1.77 g, 7.3 mmol) with 3-chloroperoxybenzoic acid (3.2 g, 10.96 mmol, 77%) followed by potassium carbonate (1.2 g, 8.76 mmol) generally according to the procedure described for Intermediate 9 afforded 1.5 g (80%) of (±)-[6-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanol. Treatment of (±)-[6-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanol (1.5 g, 5.81 mmol) with p-toluenesulfonyl chloride (1.66 g, 8.71 mol) generally according to the procedure described for Intermediate 10 gave 2.17 g (90%) of (±)-[6-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Treatment of (±)-[6-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.23 g, 0.56 mmol) with sodium azide (0.23 g, 3.54 mmol) generally according to the procedure described for Intermediate 98 afforded 0.135 g, (86%) of (±)-2-(azidomethyl)-6-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran. Treatment of (±)-2-(azidomethyl)-6-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran (0.135 g, 0.4 mmol) in tetrahydrofuran (10 mL) with polymer-supported triphenylphosphine (0.30 g, 0.9 mmol) generally according to the procedure described for Example 154 provided 0.11 g (67%) of (±)-{[6-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. mp 216-218° C.
- Treatment of 0.66 g of fraction 1 obtained from the chiral HPLC separation of (+)-benzyl {[6-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with hydrogen bromide (5 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 245 gave 0.276 g (76%) of (+)-{[6-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. mp 216-218° C.
- Treatment of 0.66 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[(6-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with hydrogen bromide (5 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 245 gave 0.192 g (52%) of (−)-{[6-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. mp 216-218° C.
- Treatment of 1-bromo-2-chlorobenzene (5.63 g, 29.4 mmol) with (2-fluoro-6-methyoxyphenyl)boronic acid (5.0 g, 29.42 mol) generally according to the procedure described for Intermediate 37 afforded 2.0 g (29%) of 6-fluoro-2′-chlorobiphenyl-2-yl methyl ether. Treatment of 6-fluoro-2′-chlorobiphenyl-2-yl methyl ether with hydrogen bromide (50 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 395 afforded a brown oil. The oil was reacted with sodium hydride (0.34 g, 14.35 mmol) and allyl bromide (1.74 g, 14.35 mmol) followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 to provide 3-allyl-6-chloro-2′-chlorobiphenyl-2-ol. Treatment of 3-allyl-6-fluoro-2′-methylbiphenyl-2-ol (1.2 g, 4.56 mmol) with m-chloroperoxybenzoic acid (2.36 g, 13.68 mmol, 77%) and potassium carbonate (1.575 g, 11.4 mmol) generally according to the procedure described for Intermediate 9 afforded 0.7 g (55%) of (±)-[7-(2-chlorophenyl)-6-fluoro-2,3-dihydro-1-benzofuran-2-yl]methanol. Treatment (±)-[7-(2-chlorophenyl)-6-fluoro-2,3-dihydro-1-benzofuran-2-yl]methanol (1.5 g, 5.81 mmol) with p-toluenesulfonyl chloride (1.66 g, 8.71 mol) generally according to the procedure described for Intermediate 10 gave 0.9 g (82%) of (±)-[6-fluoro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a white solid. Treatment of (±)-[6-fluoro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.50 g, 1.15 mmol) with sodium azide (0.4 g, 6.15 mmol) generally according to the procedure described for Intermediate 98 afforded 0.35 g, (99%) of (±)-2-(azidomethyl)-7-(2-chlorophenyl)-6-fluoro-2,3-dihydro-1-benzofuran. Treatment of (±)-2-(azidomethyl)-7-(2-chlorophenyl)-6-fluoro-2,3-dihydro-1-benzofuran (0.35 g, 1.15 mmol) in tetrahydrofuran (10 mL) with polymer-supported triphenylphosphine (0.60 g, 2.3 mmol) generally according to the procedure described for Example 154 provided 0.170 g (47%) of (±)-{[6-fluoro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. mp 248-250° C.
- Treatment of 1-bromo-2-methylbenzene (5.0 g, 26.88 mmol) with (2-chloro-6-methyoxyphenyl)boronic acid (13.8 g, 80.6 mol) generally according to the procedure described for Intermediate 37 afforded 3.85 g (62%) of 6-chloro-2′-methylbiphenyl-2-yl methyl ether. Treatment of 6-chloro-2′-methylbiphenyl-2-yl methyl ether with hydrogen bromide (100 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 395 afforded brown oil. The oil was reacted with sodium hydride (0.61 g, 25.38 mmol) and allyl bromide (3.07 g, 25.38 mmol) followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 provided 3-allyl-6-chloro-2′-methylbiphenyl-2-ol. Treatment of 3-allyl-6-chloro-2′-methylbiphenyl-2-ol (4.38 g, 16.92 mmol) with m-chloroperoxybenzoic acid (4.38 g, 25.38 mmol, 77%) and potassium carbonate (2.81 g, 20.30 mmol) generally according to the procedure described for Intermediate 9 afforded 2.4 g (52%) of (±)-[7-(2-methylphenyl)-6-chloro-2,3-dihydro-1-benzofuran-2-yl]methanol. Treatment (±)-[7-(2-methylphenyl)-6-chloro-2,3-dihydro-1-benzofuran-2-yl]methanol (2.4 g, 8.73 mmol) with p-toluenesulfonyl chloride (2.50 g, 13.1 mmol) generally according to the procedure described for Intermediate 10 gave 3.2 g (85%) of (±)-[6-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a colorless oil. Treatment of (±)-[6-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.21 g, 0.49 mmol) with sodium azide (0.35 g, 5.38 mmol) generally according to the procedure described for Intermediate 98 afforded 0.14 g, (99%) of (±)-2-(azidomethyl)-7-(2-methylphenyl)-6-chloro-2,3-dihydro-1-benzofuran. Treatment of (±)-2-(azidomethyl)-7-(2-methylphenyl)-6-chloro-2,3-dihydro-1-benzofuran (0.14 g, 0.468 mmol) in tetrahydrofuran (10 mL) with polymer-supported triphenylphosphine (0.24 g, 0.936 mmol) generally according to the procedure described for Example 154 provided 0.028 g (18%) of (±)-{[6-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. mp 204-206° C.
- Treatment of 1-bromo-2-chlorobenzene (5.0 g, 26.88 mmol) with (2-chloro-6-methyoxyphenyl) boronic acid (15.6 g, 80.64 mol) generally according to the procedure described for Intermediate 37 afforded 5.0 g (73%) of 6-chloro-2′-chlorobiphenyl-2-yl methyl ether. Treatment of 6-chloro-2′-methylbiphenyl-2-yl methyl ether with hydrogen bromide (60 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 395 afforded a brown oil. The oil was reacted with sodium hydride (1.05 g, 26.35 mmol) and allyl bromide (3.19 g, 26.35 mmol) followed by refluxing the resultant allyl ether in mesitylene generally according to the procedure described for Intermediate 8 provided 3-allyl-6-chloro-2′-chlorobiphenyl-2-ol. Treatment of 3-allyl-6-chloro-2′-chlorobiphenyl-2-ol (2.8 g, 10.03 mmol) with m-chloroperoxybenzoic acid (4.6 g, 15.0 mmol, 77%) and potassium carbonate (1.6 g, 12.0 mmol) generally according to the procedure described for Intermediate 9 afforded 2.2 g (74%) of (±)-[7-(2-chlorophenyl)-6-chloro-2,3-dihydro-1-benzofuran-2-yl]methanol. Treatment (±)-[7-(2-chlorophenyl)-6-chloro-2,3-dihydro-1-benzofuran-2-yl]methanol (1.6 g, 5.42 mmol) with p-toluenesulfonyl chloride (1.55 g, 8.13 mmol) generally according to the procedure described for Intermediate 10 gave 2.1 g (86%) of (±)-[6-chloro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a colorless oil. Treatment of (±)-[6-chloro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.2 g, 0.44 mmol) with sodium azide (0.2 g, 3.08 mmol) generally according to the procedure described for Intermediate 98 afforded 0.14 g, (99%) of (±)-2-(azidomethyl)-7-(2-chlorophenyl)-6-chloro-2,3-dihydro-1-benzofuran. Treatment of (±)-2-(azidomethyl)-7-(2-chlorophenyl)-6-chloro-2,3-dihydro-1-benzofuran (0.14 g, 0.43 mmol) in tetrahydrofuran (10 mL) with polymer-supported triphenylphosphine (0.3 g, 1.14 mmol) generally according to the procedure described for Example 154 provided 0.036 g (24%) of (±)-{[6-chloro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. mp 221-223° C.
- The title compound was prepared (0.053 g, 72%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[6-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.1 g, 0.24 mmol) and methylamine (0.31 g, 10.0 mmol). mp 200-202° C.
- The title compound was prepared (0.12 g, 40%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[6-fluoro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.4 g, 0.92 mmol) and methylamine (0.55 g, 17.7 mmol). mp 170-173° C.
- The title compound was prepared (0.02 g, 27%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[6-chloro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.1 g, 0.23 mmol) and methylamine (0.24 g, 7.8 mmol). mp 158-160° C.
- The title compound was prepared (0.056 g, 73%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[6-chloro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.1 g, 0.23 mmol) and methylamine (0.24 g, 7.8 mmol). mp 155-157° C.
- The title compound was prepared (0.055 g, 24%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-[(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl]methylamine (0.20 g, 0.826 mmol) and 2-methylphenylboronic acid (0.168 g, 1.24 mmol). mp 166-169° C.
- Treatment of 0.325 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl methyl {[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with trimethylsilyl iodide (0.671 g, 3.3 mmol) generally according to the procedure described for Example 158 gave 0.193 g (80%) of (−)-N-methyl-1-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=−22.2 (c 10.0 in methanol); mp 182-185° C.
- Treatment of 0.32 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl methyl {[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with trimethylsilyl iodide (0.67 g, 3.3 mmol) generally according to the procedure described for Example 158 gave 0.192 g (80%) of (+)-N-methyl-1-[7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=+26.4 (c 10.0 in methanol); mp 182-185° C.
- The title compound was prepared (0.078 g, 40%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-[(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl]methylamine (0.20 g, 0.826 mmol) and 2-chlorophenylboronic acid (0.194 g, 1.24 mmol). mp 163-165° C.
- Treatment of 2.71 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl methyl {[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with trimethylsilyl iodide (5.32 g, 26.57 mmol) generally according to the procedure described for Example 158 gave 1.23 g (60%) of (+)-N-methyl-1-[7-(2-chlorolphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=+13.2 (c 10.0 in methanol); mp 154-157° C.
- Treatment of 3.01 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl methyl {[7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with trimethylsilyl iodide (5.91 g, 29.52 mmol) generally according to the procedure described for Example 158 gave 1.80 g (76%) of (+)-N-methyl-1-[7-(2-chlorolphenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=−13.2 (c 10.0 in methanol); mp 154-157° C.
- The title compound was prepared (0.147 g, 66%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.300 g, 0.753 mmol) and methylamine (0.92 g, 29.5 mmol). mp 148-150° C.
- The title compound was prepared (0.250 g, 76%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-[7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.501 g, 1.22 mmol) and methylamine (4.56 g, 150.0 mmol). mp 157-159° C.
- The title compound was prepared (0.059 g, 26%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-[(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl]methylamine (0.200 g, 0.826 mmol) and 3-methylphenylboronic acid (0.169 g, 1.24 mmol). mp 157-159° C.
- The title compound was prepared (0.38 g, 53%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-[(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl]methylamine (0.200 g, 0.826 mmol) and 3-fluorophenylboronic acid (0.173 g, 1.24 mmol). mp 160-163° C.
- The title compound was prepared (0.59 g, 53%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-[(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl]methylamine (0.200 g, 0.826 mmol) and 3-chlorophenylboronic acid (0.194 g, 1.24 mmol). mp 177-178° C.
- The title compound was prepared (0.41 g, 49%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-[(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl]methylamine (0.200 g, 0.826 mmol) and 3-methoxyphenylboronic acid (0.188 g, 1.24 mmol). mp 148-151° C.
- The title compound was prepared (0.071 g, 34%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-[(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl]methylamine (0.200 g, 0.826 mmol) and 4-methylphenylboronic acid (0.168 g, 1.24 mmol). mp 210-213° C.
- The title compound was prepared (0.049 g, 21%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-[(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl]methylamine (0.200 g, 0.826 mmol) and 4-fluorophenylboronic acid (0.173 g, 1.24 mmol). mp 209-211° C.
- The title compound was prepared (0.037 g, 16%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-[(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl]methylamine (0.200 g, 0.826 mmol) and 4-chlorophenylboronic acid (0.193 g, 1.24 mmol). mp 227-230° C.
- The title compound was prepared (0.052 g, 23%) following the general procedure of Example 154 as a white solid, hydrochloride salt from (±)-[(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl]methylamine (0.200 g, 0.826 mmol) and 4-methoxyphenylboronic acid (0.188 g, 1.24 mmol). mp 214-217° C.
- The title compound was prepared (0.046 g, 65%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,3-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.095 g, 0.23 mmol) and methylamine (0.072 g, 2.3 mmol). mp 197-199° C.
- The title compound was prepared (0.137 g, 63%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.283 g, 0.64 mmol) and methylamine (0.199 g, 6.42 mmol). mp 163-166° C.
- The title compound was prepared (0.137 g, 68%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.366 g, 0.88 mmol) and methylamine (0.273 g, 8.80 mmol). mp 156-160° C.
- The title compound was prepared (0.137 g, 47%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.125 g, 0.278 mmol) and methylamine (0.086 g, 2.78 mmol). mp 190-192° C.
- The title compound was prepared (0.272 g, 82%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.435 g, 0.987 mmol) and methylamine (0.306 g, 9.87 mmol). mp 185-188° C.
- The title compound was prepared (0.091 g, 65%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,5-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.091 g, 0.22 mmol) and methylamine (0.069 g, 2.22 mmol). mp 186-189° C.
- The title compound was prepared (0.027 g, 60%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,5-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.060 g, 0.14 mmol) and methylamine (0.045 g, 1.4 mmol). mp 172-174° C.
- The title compound was prepared (0.068 g, 83%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.120 g, 0.26 mmol) and methylamine (1.24 g, 40.0 mmol). mp 147-149° C.
- The title compound was prepared (0.058 g, 79%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(5-chloro-2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.095 g, 0.213 mmol) and methylamine (0.045 g, 2.1 mmol). mp 201-203° C.
- The title compound was prepared (0.051 g, 65%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(5-chloro-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.103 g, 0.24 mmol) and methylamine (0.074 g, 2.4 mmol). mp 178-182° C.
- The title compound was prepared (0.039 g, 63%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.084 g, 0.205 mmol) and methylamine (1.86 g, 60.0 mmol). mp >250° C.
- The title compound was prepared (0.351 g, 77%) following the general procedure of Example 390 as a white solid, hydrochloride salt from [7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.595 g, 1.324 mmol) and methylamine (1.86 g, 60.0 mmol). mp 190-192° C.
- Treatment of 0.607 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with trimethylsilyl iodide (1.09 g, 5.49 mmol) generally according to the procedure described for Example 158 gave 0.409 g (86%) of (−)-{[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine as a white solid, hydrochloride salt. [α]D 25=−11.6 (c 10.0 in methanol); mp 195-197° C.
- Treatment of 0.625 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with trimethylsilyl iodide (1.131 g, 5.65 mmol) generally according to the procedure described for Example 158 gave 0.369 g (76%) of (+)-{[7-(2,6-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine. [α]D 25=+11.2 (c 10.0 in methanol); mp 195-197° C.
- The title compound was prepared (0.367 g, 70%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.730 g, 1.91 mmol) and methylamine (1.14 g, 36.7 mmol). mp 212-215° C.
- The title compound was prepared (0.094 g, 84%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.095 g, 0.23 mmol) and methylamine (0.072 g, 2.3 mmol); mp 166-168° C.
- The title compound was prepared (0.060 g, 40%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-fluoro-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.2 g, 0.48 mmol) and methylamine (0.149 g, 4.80 mmol). mp 140-141° C.
- The title compound was prepared (0.075 g, 52%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-fluoro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.19 g, 0.44 mmol) and methylamine (0.136 g, 4.40 mmol). mp 141-143.
- The title compound was prepared (0.038 g, 34%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.15 g, 0.36 mmol) and methylamine (0.112 g, 3.60 mmol). mp 102-104° C.
- Treatment of 0.22 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with trimethylsilyl iodide (0.416 g, 2.08 mmol) generally according to the procedure described for Example 158 gave 0.125 g (79%) of (−)-{[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine as a white solid, hydrochloride salt. [α]D 25=−18.58 (c 10.0 in methanol); mp 123-124° C.
- Treatment of 0.28 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with trimethylsilyl iodide (0.528 g, 2.64 mmol) generally according to the procedure described for Example 158 gave 0.124 g (61%) of (+)-{[5-fluoro-7-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine as a white solid, hydrochloride salt. [α]D 25=+14.25 (c 10.0 in methanol); mp 123-124° C.
- The title compound was prepared (0.075 g, 37%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-fluoro-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.27 g, 0.6 mmol) and methylamine (0.198 g, 6.0 mmol). mp 175-176° C.
- The title compound was prepared (0.103 g, 74%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.18 g, 0.39 mmol) and methylamine (0.139 g, 3.9 mmol). mp 85-89° C.
- The title compound was prepared (0.041 g, 40%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,4-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.13 g, 0.278 mmol) and methylamine (0.086 g, 2.78 mmol). mp 146-148° C.
- Treatment of 0.48 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,4-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with trimethylsilyl iodide (0.834 g, 4.17 mmol) generally according to the procedure described for Example 158 gave 0.200 g (53%) of (−)-[7-(2,4-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine as a white solid, hydrochloride salt. [α]D 25=−8.87 (c 10.0 in methanol); mp 162-163° C.
- Treatment of 0.48 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,4-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with trimethylsilyl iodide (0.834 g, 4.17 mmol) generally according to the procedure described for Example 158 gave 0.200 g (53%) of (+)-[7-(2,4-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine as a white solid, hydrochloride salt. [α]D 25=+8.61 (c 10.0 in methanol); mp 161-163° C.
- The title compound was prepared (0.73 g, 44%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,5-difluorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.22 g, 0.51 mmol) and methylamine (0.155 g, 5.1 mmol). mp 185-187° C.
- The title compound was prepared (0.123 g, 80%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,5-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.2 g, 0.43 mmol) and methylamine (0.133 g, 4.3 mmol). mp 166-168° C.
- Treatment of 0.53 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,5-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with trimethylsilyl iodide (0.92 g, 4.60 mmol) generally according to the procedure described for Example 158 gave 0.204 g (49%) of (+)-{[5-fluoro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine as a white solid, hydrochloride salt. [α]D 25=+14.00 (c 10.0 in methanol); mp 118-120° C.
- Treatment of 0.54 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,5-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with trimethylsilyl iodide (0.96 g, 4.80 mmol) generally according to the procedure described for Example 158 gave 0.275 g (65%) of (−)-{[5-fluoro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine as a white solid, hydrochloride salt. [α]D 25=−22.30 (c 10.0 in methanol); mp 110-112° C.
- The title compound was prepared (0.76 g, 48%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,5-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.21 g, 0.49 mmol) and methylamine (0.152 g, 4.9 mmol). mp 186-188° C.
- The title compound was prepared (0.148 g, 65%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.3 g, 0.70 mmol) and methylamine (0.22 g, 7.0 mmol). mp 175-178° C.
- The title compound was prepared (0.081 g, 52%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.2 g, 0.43 mmol) and methylamine (0.133 g, 4.3 mmol). mp 196-198° C.
- The title compound was prepared (0.73 g, 50%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-fluoro-7-(5-methoxy-2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.19 g, 0.40 mmol) and methylamine (0.124 g, 4.0 mmol). mp 173-174° C.
- The title compound was prepared (0.77 g, 48%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-fluoro-7-(2-methoxy-5-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.21 g, 0.45 mmol) and methylamine (0.139 g, 4.5 mmol). mp 197-199° C.
- The title compound was prepared (0.62 g, 38%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(5-chloro-2-methoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.21 g, 0.45 mmol) and methylamine (0.139 g, 4.5 mmol). mp 189-190° C.
- The title compound was prepared (0.056 g, 34%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-fluoro-7-pyridin-3-yl-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.20 g, 0.50 mmol) and methylamine (0.155 g, 5.0 mmol). mp 255-257° C.
- The title compound was prepared (0.037 g, 29%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-chloro-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.39 g, 0.88 mmol) and methylamine (0.271 g, 8.8 mmol). mp 100-102° C.
- The title compound was prepared (0.155 g, 62%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.333 g, 0.74 mmol) and methylamine (0.231 g, 7.4 mmol). mp 229-231° C.
- The title compound was prepared (0.037 g, 34%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-chloro-7-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.142 g, 0.33 mmol) and methylamine (0.102 g, 3.3 mmol). mp 159-161° C.
- The title compound was prepared (0.068 g, 60%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-chloro-7-(2,3-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.148 g, 0.329 mmol) and methylamine (0.102 g, 3.29 mmol). mp 177-179° C.
- The title compound was prepared (0.051 g, 40%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-chloro-7-(2,3-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.165 g, 0.341 mmol) and methylamine (0.106 g, 3.41 mmol). mp 219-221° C.
- The title compound was prepared (0.054 g, 47%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-chloro-7-(2,3-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.149 g, 0.33 mmol) and methylamine (0.102 g, 3.3 mmol). mp 148-150° C.
- The title compound was prepared (0.046 g, 34%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-chloro-7-(2,3-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.172 g, 0.36 mmol) and methylamine (0.112 g, 3.6 mmol). mp 105-107° C.
- The title compound was prepared (0.059 g, 48%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-chloro-7-(2,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.162 g, 0.36 mmol) and methylamine (0.112 g, 3.6 mmol). mp 163-165° C.
- The title compound was prepared (0.059 g, 57%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-chloro-7-(2,4-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.135 g, 0.28 mmol) and methylamine (0.086 g, 2.8 mmol). mp 202-204° C.
- The title compound was prepared (0.052 g, 68%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-chloro-7-(2,4-dimethoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.099 g, 0.21 mmol) and methylamine (0.065 g, 2.1 mmol). mp 206-208° C.
- The title compound was prepared (0.090 g, 67%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-chloro-7-(2,5-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.175 g, 0.39 mmol) and methylamine (0.120 g, 3.9 mmol). mp 189-191° C.
- The title compound was prepared (0.027 g, 23%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-chloro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.152 g, 0.31 mmol) and methylamine (0.086 g, 3.1 mmol). mp 185-187° C.
- The title compound was prepared (0.027 g, 21%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-chloro-7-(5-chloro-2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.165 g, 0.34 mmol) and methylamine (0.107 g, 3.4 mmol). mp 193-195° C.
- The title compound was prepared (0.09 g, 79%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-chloro-7-(3,4-difluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.149 g, 0.33 mmol) and methylamine (0.102 g, 3.3 mmol). mp 235-237° C.
- The title compound was prepared (0.032 g, 48%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[5-chloro-7-(3-chloro-4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.086 g, 0.18 mmol) and methylamine (0.057 g, 1.8 mmol). mp 202-204° C.
- The title compound was prepared (0.03 g, 28%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2-fluorophenyl) 5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.14 g, 0.34 mmol) and methylamine (0.105 g, 3.4 mmol). mp 153-155° C.
- The title compound was prepared (0.060 g, 28%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2-chlorophenyl) 5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.22 g, 0.50 mmol) and methylamine (0.155 g, 5.0 mmol). mp 194-196° C.
- The title compound was prepared (0.041 g, 32%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2-methoxyphenyl) 5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.17 g, 0.40 mmol) and methylamine (0.124 g, 4.0 mmol). mp 165-166° C.
- The title compound was prepared (0.075 g, 60%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(3-methylphenyl) 5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.17 g, 0.42 mmol) and methylamine (0.129 g, 4.2 mmol). mp 165-167° C.
- The title compound was prepared (0.016 g, 13%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(3-chlorophenyl) 5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.16 g, 0.37 mmol) and methylamine (0.115 g, 3.7 mmol). mp 181-182° C.
- The title compound was prepared (0.049 g, 44%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(4-methylphenyl) 5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.15 g, 0.37 mmol) and methylamine (0.114 g, 3.7 mmol). mp 184-185° C.
- The title compound was prepared (0.026 g, 21%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(4-chlorophenyl) 5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.16 g, 0.37 mmol) and methylamine (0.115 g, 3.7 mmol). mp 210-213° C.
- The title compound was prepared (0.028 g, 25%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(4-fluorophenyl) 5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.15 g, 0.36 mmol) and methylamine (0.112 g, 3.6 mmol). mp 206-208° C.
- The title compound was prepared (0.075 g, 52%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (+)-[7-(4-methoxyphenyl) 5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.19 g, 0.45 mmol) and methylamine (0.112 g, 4.5 mmol). mp 235-238° C.
- The title compound was prepared (0.094 g, 44%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,3-dimethoxyphenyl) 5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.18 g, 0.40 mmol) and methylamine (0.123 g, 4.0 mmol). mp 85-89° C.
- The title compound was prepared (0.029 g, 14%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,4-dichlorophenyl) 5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.26 g, 0.56 mmol) and methylamine (0.174 g, 5.6 mmol). mp 169-171° C.
- The title compound was prepared (0.034 g, 27%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,5-dichlorophenyl) 5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.16 g, 0.34 mmol) and methylamine (0.107 g, 3.4 mmol). mp 158-160° C.
- Treatment of 0.51 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,5-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with trimethylsilyl iodide (0.88 g, 4.4 mmol) generally according to the procedure described for Example 158 gave 0.256 g (64%) of (+)-{[7-(2,5-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine as a white solid, hydrochloride salt. [α]D 25=+14.0 (c 10.0 in methanol); mp 192-194° C.
- Treatment of 0.50 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,5-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with trimethylsilyl iodide (0.88 g, 4.4 mmol) generally according to the procedure described for Example 158 gave 0.132 g (33%) of (−)-{[7-(2,5-dichlorophenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine as a white solid, hydrochloride salt. [α]D 25=−12.99 (c 10.0 in methanol); mp 192-194° C.
- The title compound was prepared (0.035 g, 46%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,6-dimethylphenyl) 5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.10 g, 0.24 mmol) and methylamine (0.073 g, 2.4 mmol). mp 204-205° C.
- The title compound was prepared (0.073 g, 78%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,6-dichlorophenyl)
- 5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.12 g, 0.26 mmol) and methylamine (0.080 g, 2.6 mmol). mp 192-195° C.
- The title compound was prepared (0.039 g, 51%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(2-fluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.102 g, 0.24 mmol) and methylamine (0.074 g, 2.4 mmol). mp 110-112° C.
- The title compound was prepared (0.040 g, 52%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(2-chlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.102 g, 0.23 mmol) and methylamine (0.071 g, 2.3 mmol). mp 185-186° C.
- The title compound was prepared (0.055 g, 54%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(2-methylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.135 g, 0.32 mmol) and methylamine (0.099 g, 3.2 mmol). mp 167-169° C.
- The title compound was prepared (0.017 g, 18%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(2,3-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.12 g, 0.27 mmol) and methylamine (0.082 g, 2.7 mmol). mp 148-150° C.
- The title compound was prepared (0.053 g, 68%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(2,3-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.135 g, 0.28 mmol) and methylamine (0.087 g, 2.8 mmol). mp 178-180° C.
- The title compound was prepared (0.064 g, 64%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(2,3-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.132 g, 0.30 mmol) and methylamine (0.093 g, 3.0 mmol). mp 177-179° C.
- The title compound was prepared (0.062 g, 61%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(2,4-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.132 g, 0.29 mmol) and methylamine (0.092 g, 2.9 mmol). mp 179-181° C.
- The title compound was prepared (0.027 g, 27%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(2,5-difluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.129 g, 0.29 mmol) and methylamine (0.090 g, 2.9 mmol). mp 163-165° C.
- The title compound was prepared (0.061 g, 56%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(2,5-dichlorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.139 g, 0.29 mmol) and methylamine (0.090 g, 2.9 mmol). mp 179-181° C.
- The title compound was prepared (0.064 g, 62%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(2,5-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.135 g, 0.31 mmol) and methylamine (0.096 g, 3.1 mmol). mp 202-204° C.
- The title compound was prepared (0.032 g, 27%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(2,5-dimethoxyphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.152 g, 0.32 mmol) and methylamine (0.100 g, 3.2 mmol). mp 144-145° C.
- The title compound was prepared (0.067 g, 58%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(5-chloro-2-methoxyphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.148 g, 0.31 mmol) and methylamine (0.097 g, 3.1 mmol). mp 169-171° C.
- The title compound was prepared (0.052 g, 46%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(3-chloro-4-fluorophenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.14 g, 0.31 mmol) and methylamine (0.097 g, 3.1 mmol). mp 197-199° C.
- The title compound was prepared (0.076 g, 57%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(2,6-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.175 g, 0.40 mmol) and methylamine (0.12 g, 4.0 mmol). mp 170-172° C.
- The title compound was prepared (0.066 g, 84%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(2-chlorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.10 g, 0.20 mmol) and methylamine (0.30 g, 9.8 mmol). mp 192-194° C.
- The title compound was prepared (0.055 g, 69%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(3-chlorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.10 g, 0.20 mmol) and methylamine (0.30 g, 9.8 mmol). mp 211-214° C.
- The title compound was prepared (0.056 g, 71%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(4-chlorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.10 g, 0.20 mmol) and methylamine (0.30 g, 9.8 mmol). mp >250° C.
- The title compound was prepared (0.065 g, 83%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(2-fluorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.10 g, 0.21 mmol) and methylamine (0.30 g, 9.8 mmol). mp 204-206° C.
- The title compound was prepared (0.058 g, 74%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(3-fluorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.10 g, 0.21 mmol) and methylamine (0.30 g, 9.8 mmol). mp >250° C.
- The title compound was prepared (0.040 g, 51%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(4-fluorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.10 g, 0.21 mmol) and methylamine (0.30 g, 9.8 mmol). mp >250° C.
- The title compound was prepared (0.055 g, 70%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(2-methylphenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.10 g, 0.21 mmol) and methylamine (0.30 g, 9.8 mmol). mp 232-235° C.
- The title compound was prepared (0.055 g, 70%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(3-methylphenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.10 g, 0.21 mmol) and methylamine (0.30 g, 9.8 mmol). mp 230-234° C.
- The title compound was prepared (0.051 g, 65%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(4-methylphenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.10 g, 0.213 mmol) and methylamine (0.30 g, 9.8 mmol). mp >250° C.
- The title compound was prepared (0.060 g, 76%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(2-methoxyphenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.10 g, 0.21 mmol) and methylamine (0.30 g, 9.8 mmol). mp 140-143° C.
- The title compound was prepared (0.053 g, 67%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(3-methoxyphenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.10 g, 0.21 mmol) and methylamine (0.30 g, 9.8 mmol). mp 206-209° C.
- The title compound was prepared (0.081 g, 99%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(4-methoxyphenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.10 g, 0.21 mmol) and methylamine (0.30 g, 9.8 mmol). mp >250° C.
- The title compound was prepared (0.047 g, 59%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-{[7-(2,4-difluorophenyl)-5-phenyl-2,3-dihydro-1-benzofuran-2-yl]methyl}-4-methylbenzenesulfonate (0.10 g, 0.20 mmol) and methylamine (0.30 g, 9.8 mmol). mp 188-191° C.
- The title compound was prepared (0.031 g, 67%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-phenyl-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.060 g, 0.13 mmol) and methylamine (0.12 g, 3.9 mmol). mp 189-190° C.
- The title compound was prepared (0.026 g, 67%) following the general procedure of Example 390 as a white solid, hydrochloride salt from [7-(3-methylphenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.050 g, 0.1 mmol) and methylamine (0.12 g, 3.9 mmol). mp 228-230° C.
- The title compound was prepared (0.026 g, 60%) following the general procedure of Example 390 as a white solid, hydrochloride salt from [7-(3-fluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.055 g, 0.18 mmol) and methylamine (0.12 g, 3.9 mmol). mp 238-240° C.
- The title compound was prepared (0.015 g, 19%) following the general procedure of Example 390 as a white solid, hydrochloride salt from [7-(2,3-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.10 g, 0.21 mmol) and methylamine (0.12 g, 3.9 mmol). mp 123-125° C.
- The title compound was prepared (0.035 g, 48%) following the general procedure of Example 390 as a white solid, hydrochloride salt from [7-(3,4-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.093 g, 0.19 mmol) and methylamine (0.12 g, 3.9 m-mol). mp 235-237° C.
- The title compound was prepared (0.045 g, 58%) following the general procedure of Example 390 as a white solid, hydrochloride salt from [7-(2,5-difluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.10 g, 0.21 mmol) and methylamine (0.12 g, 3.9 mmol). mp 138-140° C.
- The title compound was prepared (0.039 g, 49%) following the general procedure of Example 390 as a white solid, hydrochloride salt from [7-(2,3-dichlorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.10 g, 0.19 mmol) and methylamine (0.12 g, 3.9 mmol). mp 238-240° C.
- The title compound was prepared (0.014 g, 19%) following the general procedure of Example 390 as a white solid, hydrochloride salt from [7-(3-chloro-4-fluorophenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.095 g, 0.19 mmol) and methylamine (0.12 g, 3.9 mmol). mp 229-230° C.
- The title compound was prepared (0.048 g, 76%) following the general procedure of Example 390 as a white solid, hydrochloride salt from [7-(2,4-dimethoxyphenyl)-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.080 g, 0.16 mmol) and methylamine (0.12 g, 3.9 mmol). mp 234-236° C.
- The title compound was prepared (0.033 g, 58%) following the general procedure of Example 390 as a white solid, hydrochloride salt from [7-[3,5-bis(trifluoromethyl)phenyl]-5-(trifluoromethyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.070 g, 0.12 mmol) and methylamine (0.12 g, 3.9 mmol). mp 205-207° C.
- The title compound was prepared (0.075 g, 75%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-fluoro-5-(2-methylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.141 g, 0.32 mmol) and methylamine (0.20 g, 6.4 mmol). mp 212-217° C. (dec).
- The title compound was prepared (0.068 g, 47%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-fluoro-5-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.199 g, 0.46 mmol) and methylamine (0.28 g, 9.2 mmol). mp 217-222° C. (dec).
- The title compound was prepared (0.132 g, 92%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-fluoro-5-(2-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.20 g, 0.48 mmol) and methylamine (0.30 g, 9.6 mmol). mp >250° C. (dec).
- The title compound was prepared (0.02 g, 18%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[{7-fluoro-5-[2-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate (0.21 g, 0.45 mmol) and methylamine (0.28 g, 9.0 mmol). mp 196-200° C. (dec).
- The title compound was prepared (0.13 g, 92%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[{7-fluoro-5-[2-methoxyphenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate (0.18 g, 0.42 mmol) and methylamine (0.26 g, 8.4 mmol). mp 223-226° C. (dec).
- The title compound was prepared (0.14 g, 99%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[{7-fluoro-5-[3-methylphenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate (0.20 g, 0.48 mmol) and methylamine (0.30 g, 9.6 mmol). mp 245-250° C.
- The title compound was prepared (0.11 g, 81%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[{7-fluoro-5-[3-chlorophenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate (0.21 g, 0.49 mmol) and methylamine (0.30 g, 9.6 mmol). mp 225-232° C.
- The title compound was prepared (0.12 g, 88%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-fluoro-5-(3-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.19 g, 0.45 mmol) and methylamine (0.28 g, 9.1 mmol). mp >250° C.
- The title compound was prepared (0.034 g, 23%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[{7-fluoro-5-[3-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate (0.19 g, 0.42 mmol) and methylamine (0.26 g, 8.5 mmol). mp 215-219° C.
- The title compound was prepared (0.13 g, 99%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[{7-fluoro-5-[3-methoxyphenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate (0.18 g, 0.42 mmol) and methylamine (0.26 g, 8.3 mmol). mp 214-217° C.
- The title compound was prepared (0.11 g, 88%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[{7-fluoro-5-[4-methylphenyl]-2,3-dihydro-1-benzofuran-2-yl)}methyl 4-methylbenzenesulfonate (0.17 g, 0.41 mmol) and methylamine (0.26 g, 8.3 mmol). mp >250° C.
- The title compound was prepared (0.14 g, 91%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[{7-fluoro-5-[4-chlorophenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate (0.21 g, 0.49 mmol) and methylamine (0.30 g, 9.8 mmol). mp >250° C.
- The title compound was prepared (0.12 g, 96%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-fluoro-5-(4-fluorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.18 g, 0.43 mmol) and methylamine (0.27 g, 8.6 mmol). mp >250° C.
- The title compound was prepared (0.14 g, 87%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[{7-fluoro-5-[4-(trifluoromethyl)phenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate (0.21 g, 0.45 mmol) and methylamine (0.28 g, 9.0 mmol). mp >250° C.
- The title compound was prepared (0.12 g, 92%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[{7-fluoro-5-[4-methoxyphenyl]-2,3-dihydro-1-benzofuran-2-yl}methyl 4-methylbenzenesulfonate (0.18 g, 0.42 mmol) and methylamine (0.26 g, 8.4 mmol). mp >250° C.
- Treatment of 0.71 g of fraction 1 obtained from the chiral HPLC separation of (±)-[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate with methylamine (0.47 g, 15.0 mmol) generally according to the procedure described for Example 390 gave 0.42 g (76%) of (+)-{[(7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine as a white solid, hydrochloride salt. [α]D 25=+7.89 (c 10.0 in methanol); mp 140-142° C.
- Treatment of 0.79 g of fraction 2 obtained from the chiral HPLC separation of (±)-[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate with methylamine (0.52 g, 16.9 mmol) generally according to the procedure described for Example 390 gave 0.39 g (64%) of (−)-{[(7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine as a white solid, hydrochloride salt. [α]D 25=−9.02 (c 10.0 in methanol); mp 140-142° C.
- Treatment of (R)-2-bromomethyl-7-(2-chloro-phenyl)-5-fluoro-2,3-dihydrobenzofuran (0.55 g, 1.6 mmol) generally according to the procedure described for Example 390 gave 0.36 g (77%) of (R)-[7-(2-chloro-phenyl)-5-fluoro-2,3-dihydro-benzofuran-2-ylmethyl]-methyl-amine as a white foam, hydrochloride salt. [α]D 25=+11.57 (c 7.43 in methanol); Anal. calcd. for C16H15ClFNOHCl: C, 58.55; H, 4.91; N, 4.27. Found: C, 56.86; H, 5.27; N, 3.91.
- Treatment of (R)-2-bromomethyl-7-(2,6-dichloro-phenyl)-5-fluoro-2,3-dihydrobenzofuran (0.42 g, 1.1 mmol) generally according to the procedure described for Example 390 afforded 0.28 g (74%) of (R)-[7-(2,6-dichloro-phenyl)-5-fluoro-2,3-dihydrobenzofuran-2-ylmethyl]ethylamine as a white foam, hydrochloride salt. MS ES [M+H]+ 340.1; [α]D 5=−7.12 (c 7.86 in methanol); Anal. calcd. for C17H16Cl2FNOHCl: C, 54.21; H, 4.55; N, 3.72. Found: C, 51.85; H, 4.88; N, 3.50.
- Treatment of (R)-2-bromomethyl-7-(2,6-dichloro-phenyl)-5-fluoro-2,3-dihydrobenzofuran (0.41 g, 1.1 mmol) and N,N-dimethylamine (2.0 M in tetrahydrofuran, 5.4 ml) generally according to the procedure described for Example 390 afforded 0.29 g (80%) of (R)-[7-(2,6-dichloro-phenyl)-5-fluoro-2,3-dihydro-benzofuran-2-ylmethyl]-dimethyl-amine as a white solid, hydrochloride salt. mp 156-158° C.; [α]D 25=−21.04 (c 7.71 in methanol); Anal. calcd. for C17H16Cl2FNOHCl: C, 54.21; H, 4.55; N, 3.72. Found: C, 53.98; H, 4.62; N, 3.56.
- Treatment of (R)-2-azidomethyl-7-(5-chloro-2-methyl-phenyl)-5-fluoro-2,3-dihydro-benzofuran (0.40 g, 1.2 mmol) generally according to the procedure described for Example 21 gave {[(2R)-7-(5-chloro-2-methylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. mp 148-150° C.; [α]D 25=+1.45 (c 8.29 in methanol); Anal. calcd. for C16H15ClFNOHCl: C, 58.55; H, 4.91; N, 4.27. Found: C, 58.55; H, 4.78; N, 3.88.
- Treatment of (R)-2-azidomethyl-7-(4-chloro-2-methyl-phenyl)-5-fluoro-2,3-dihydrobenzo-furan (0.40 g, 1.2 mmol) generally according to the procedure described for Example 21 provided 0.29 g (80%) of {[(2R)-7-(4-chloro-2-methylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. mp 183-185° C.; [α]D 25=+7.22 (c 9.14 in methanol); Anal. calcd. for C16H15ClFNOHCl: C, 58.55; H, 4.91; N, 4.27. Found: C, 58.55; H, 4.87; N, 4.52.
- Treatment of 0.95 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate with hydrogen bromide (20 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 245 gave 0.38 g (57%) of (−)-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=−21.12 (c 10.0 in methanol); mp 228-230° C.
- Treatment of 1.3 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}carbamate trimethylsilyl iodide (2.33 g, 11.6 mmol) generally according to the procedure described for Example 158 gave 0.78 g (77%) of (+)-{[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a white solid, hydrochloride salt. [α]D 25=16.46 (c 10.0 in methanol); mp 217-220° C.
- To a solution of (±)-[6-chloro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanol (0.5 g, 1.69 mmol) in toluene (10 mL) was added triphenylphosphine (0.66 g, 2.54 mmol), diethyl azodicarboxylate (0.44 g, 2.54 mmol), and 2-hydroxy-2-methylpropanenitrile (0.21 g, 2.53 mmol) and the reaction mixture was allowed to stir at room temperature for 48 h. The solvent was removed in vacuo to provide a crude oil. Purification by flash column chromatography (silica, ethyl acetate:hexanes 1:9-3:7) provided 0.22 g (43%) of (±)-{2-[6-chloro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]propanenitrile. To a solution of the nitrile in tetrahydrofuran (10 mL) was added borane-tetrahydrofuran (8 mL) and the reaction mixture was heated to reflux for 3 h. The reaction mixture was quenched with 1.0 N aqueous hydrogen chloride (100 mL) and then neutralized with 1.0 N aqueous sodium hydroxide (100 mL). The aqueous layer was extracted with ethyl acetate (2×200 mL) and the combined organic extracts were washed with saturated aqueous sodium chloride (100 mL), dried (magnesium sulfate) and the solvent removed in vacuo. Purification by flash column chromatography (silica, 10% ammonium hydroxide in methanol:dichloromethane 1:9) provided 0.1 g (19%) of (±)-{2-[6-chloro-7-(2-chlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]ethyl}amine as a white solid, hydrochloride salt. mp 211-213° C.
- Treatment of (±)-[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methanol (0.5 g, 1.9 mmol) with triphenylphosphine (1.23 g, 4.67 mmol), diethyl azodicarboxylate (0.82 g, 4.68 mmol), and 2-hydroxy-2-methylpropanenitrile (0.40 g, 4.68 mmol) generally according to the procedure described for Example 552 afforded 0.106 g (15%) of (±)-{2-[7-(2,6-dichlorophenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]ethyl}amine as a white solid, hydrochloride salt. mp 212-213° C.
- To a solution of (±)-[5-methoxy-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.25 g, 0.57 mmol) in dimethylsulfoxide (20 mL) was added sodium cyanide (0.07 g, 1.43 mmol) and the reaction mixture was allowed to stir at 50° C. for 1 h. The reaction was quenched by the addition of water (10 mL) and extracted with ethyl acetate (2×10 mL). The combined organics were washed with water (3×20 mL), saturated aqueous sodium chloride (20 mL), dried (magnesium sulfate) and the solvent was removed in vacuo to give a crude oil. Purification by flash column chromatography (silica, ethyl acetate:hexanes 2:8) gave (±)-[5-methoxy-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]acetonitrile as a colorless oil. The oil was dissolved in ethanol (30 mL), 28% aqueous ammonium hydroxide (20 mL), and treated with rhodium on alumina (0.1 g, 5 wt. %) generally according to procedure described for Example 1 to afford 0.025 g (13%) of (±)-{2-[5-methoxy-7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]ethyl}amine as a yellow solid, hydrochloride salt. mp 240-242° C.
- The title compound was prepared (0.424 g, 80%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (±)-[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.68 g, 1.4 mmol) and methylamine (3.1 g, 50.0 mmol). mp 169-172° C.
- Treatment of 1.48 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with trimethylsilyl iodide (2.48 g, 12.4 mmol) generally according to the procedure described for Example 158 provided 0.125 g (11%) of (+)-{N-methyl-1-[(7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=+7.8 (c 10.0 in methanol); mp 93-98° C.
- Treatment of 1.41 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with trimethylsilyl iodide (2.36 g, 11.8 mmol) generally according to the procedure described for Example 158 gave 0.17 g (15%) of (−)-{N-methyl-1-[(7-(2,4,6-trichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methanamine as a white solid, hydrochloride salt. [α]D 25=−6.2 (c 10.0 in methanol); mp 93-98° C.
- The title compound was prepared (0.147 g, 65%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (+)-[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.50 g, 1.2 mmol) and methylamine (0.372 g, 12.0 mmol). [α]D 25=+1.6 (c 10.0 in methanol); mp 169-170° C.
- The title compound was prepared (0.298 g, 79%) following the general procedure of Example 390 as a white solid, hydrochloride salt from (−)-[7-(2,6-dimethylphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate (0.50 g, 1.2 mmol) and methylamine (0.372 g, 12.0 mmol). [α]D 25=−3.0 (c 10.0 in methanol); mp 171-173° C.
- Treatment of 0.56 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,6-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with palladium on carbon (0.1 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.323 g (74%) of (−)-{[7-(2,6-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine as a white solid, hydrochloride salt. [α]D 25=−5.9 (c 10.0 in methanol); mp 158-160° C.
- Treatment of 0.55 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,6-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with palladium on carbon (0.1 g, 10 wt. %) generally according to the procedure described for Example 1 gave 0.225 g (53%) of (+) {[7-(2,6-dimethylphenyl)-5-methoxy-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine as a white solid, hydrochloride salt. [α]D 25=+4.51 (c 10.0 in methanol); mp 158-160° C.
- Treatment of 0.9 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,5-dichlorophenyl)-5-chloro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with hydrogen bromide (20 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 245 gave 0.598 g (84%) of (+)-{[5-chloro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine as a white solid, hydrochloride salt. [α]D 25=+14.27 (c 10.0 in methanol); mp 181-183° C.
- Treatment of 0.9 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,5-dichlorophenyl)-5-chloro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with hydrogen bromide (20 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 245 gave 0.49 g (68%) of (−)-{[5-chloro-7-(2,5-dichlorophenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine as a white solid, hydrochloride salt. [α]D 25=−7.8 (c 10.0 in methanol); mp 187-189° C.
- Treatment of 0.65 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with hydrogen bromide (15 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 245 gave 0.395 g (78%) of (−)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine as a white solid, hydrochloride salt. [α]D 25=−8.4 (c 10.0 in methanol); mp 229-231° C.
- Treatment of 0.65 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with hydrogen bromide (15 mL, 30 wt. % in acetic acid) generally according to the procedure described for Example 245 gave 0.37 g (74%) of (+)-{[5-chloro-7-(2,6-dimethylphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine as a white solid, hydrochloride salt. [α]D 25=+11.6 (c 10.0 in methanol); mp 229-231° C.
- Treatment of 0.8 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with trimethylsilyl iodide (1.05 g, 5.2 mmol) generally according to the procedure described for Example 158 gave 0.16 g (28%) of (+)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}amine as a light yellow foam, hydrochloride salt. [α]D 25=+38.89 (c 10.0 in methanol).
- Treatment of 0.67 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with trimethylsilyl iodide (1.05 g, 5.2 mmol) generally according to the procedure described for Example 158 gave 0.14 g (29%) of (−)-{[7-(2,3-dimethoxyphenyl)-5-methyl-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine as a light yellow foam, hydrochloride salt. [α]D 25=−38.0 (c 10.0 in methanol).
- Treatment of 0.88 g of fraction 1 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with trimethylsilyl iodide (1.55 g, 7.7 mmol) generally according to the procedure described for Example 158 gave 0.37 g (54%) of (−)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine as a light yellow foam, hydrochloride salt; [α]D 25=−26.4 (c 10.0 in methanol).
- Treatment of 1.4 g of fraction 2 obtained from the chiral HPLC separation of (±)-benzyl {[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylcarbamate with trimethylsilyl iodide (2.53 g, 12.6 mmol) generally according to the procedure described for Example 158 gave 0.53 g (48%) of (+)-{[7-(2,3-dimethoxyphenyl)-5-fluoro-2,3-dihydro-1-benzofuran-2-yl]methyl}methylamine as a light yellow foam, hydrochloride salt; [α]D 25=25.2 (c 10.0 in methanol).
-
- To a solution of NaOH (54 g, 1.35 mol) in water (400 mL) heated to 60° C. was added dimethoxyethane (400 mL), then dichlorobromobenzene (Aldrich, 60 g, 0.267 mol) and boronic acid (50 g, 0.294 mol). To the resulting stirred emulsion, solid Pd(PPh3)4 (9.5 g, 8.2 mmol) was added and washed down with 100 mL of DME. The greenish mixture was heated at reflux (ca. 80° C.) while stirred mechanically. The course of reaction was monitored by HPLC. After 2 hr, 9.0 g (0.053 mol) of additional boronic acid and 2.0 g (1.7 mmol) of the catalyst were added to the reaction mixture and the heating was continued for 16 hr longer. More boronic acid (5.8 g, 0.034 mol) and the catalyst (0.5 g, 0.4 mmol) were added at that point and the mixture was kept at reflux for 7 hr longer (23 hr was total reaction time).
- The heating was stopped and 600 mL of heptane and 300 mL of water were added. The mixture was allowed to cool to room temperature and then was filtered through Celite. The layers were separated, the organic layer was washed with water, three times with brine, dried with MgSO4 and filtered through a pad of Magnesol. The clear colorless solution was concentrated on a rotary evaporator to a colorless oil (weight 72 g). The oil was triturated with 120 mL of heptane which caused crystallization of a white solid. The mixture was left in a refrigerator overnight, the separated crystals were filtered and dried in air. Yield 51 g, 93% pure. The major impurity was determined to be the homo-coupling product 13. Additional recrystallization of the material from heptane gave crystals of 98% purity. Yield 45 g (62%) as white crystals.
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- To a magnetically stirred solution of the arene (38.0 g, 0.140 mol) in 190 mL of dioxane placed into a 500-mL round-bottom flask equipped with a temperature probe, cone, sulfuric acid (38 mL) was added slowly (exothermic mixing, temperature rose to 37° C., the solution turned yellow). To the warm solution (the arene would crystallize out of the mixture if it was allowed to cool down), solid NBS (26.7 g, 0.150 mol) was added in one portion (no exothermic heating was observed here). The resulting solution was heated in a mantle at 50° C. The reaction progress monitored by HPLC. After 18 hr, only trace amount of the starting arene was detected.
- The reaction mixture was allowed to cool to room temperature (r.t.), then it was poured onto 400 g of ice (could use lesser amount as it did not melt completely). Heptane (100 mL) was added and the mixture was transferred to the separatory funnel. The aqueous layer was separated and extracted with additional portions of heptane (2×100 mL) (toluene could be used instead of heptane as the product started to crystallize; toluene was added to the organic solution to get the product back into the solution). Combined organic solutions were washed once with water (30 mL), then aq. Na2S2O3 solution (to remove unreacted NBS, reaction with KI-starch indicator paper), and, finally, with 1 M aq. NaOH solution (2×30 mL) (upon NaOH treatment the mixture turned from yellow to dark-brown but all the color went into the aqueous phase). Light-yellow clear organic solution was dried with MgSO4, filtered through a cotton plug and evaporated in vacuum (bath temp. 60° C.). The resulting yellow oil was re-dissolved in 55 mL of heptane.
- The first batch of crystals (25.5 g) slowly separated from the heptane solution at r.t. and was filtered and dried in air. Purity 98% (HPLC @ 215 nm), white crystals. M.p. 67-69° C.
- The second batch of the product (13.9 g) was isolated from the mother liquor by chilling it in a dry-ice-acetone bath, filtering off the precipitated solid and drying it in a vacuum desiccator over CaSO4. Purity 97% (HPLC area % at 215 nm), white amorphous powder. M.p. 47-56° C.
- Total yield 39.4 g (80%).
- 1H NMR (300 MHz, CDCl3) δ: 7.42 (m, J=8.1 Hz, 2H)10, 7.39 (dd, J=3.0, 7.7 Hz, 1H), 7.30 (dd, J=8.1 Hz, 1H), 6.86 (dd, J=3.0, 8.0 Hz, 1H), 3.56 (s, 3H). Protons at 7.42 and 7.30 ppm form a second-order A2B spin system with JAB=8.1 Hz (determined by NMR simulation).
- EI MS, m/z.
-
- Generation of the Grignard reagent. Aryl bromide (25.0 g, 71.4 mmol) was placed into a 500-mL flask equipped with a magnetic stirrer, nitrogen inlet, temperature probe and a rubber septum. The flask was purged excessively with nitrogen, then left under positive nitrogen pressure. Dry THF (100 mL) was transferred into the flask via a syringe. The solution was chilled in an ice bath to 2° C.
- A solution of i-PrMgCl in THF (1.9 M, Aldrich, 39.5 mL, 75 mmol) was added slowly to the solution in the flask via a syringe (20 min addition time, the temperature was maintained between 2 and 6° C.). The resulting yellowish solution was left in the bath for 18 hr allowing it to reach room temperature. (The reaction is monitored by HPLC analysis of an aliquote quenched by water. Care should be taken not to introduce oxygen into the reaction flask while sampling the solution.)
- Reaction with glycidyl tosylate. The solution of the Grignard reagent was chilled to −30° C. by placing the flask in a bath with partially frozen dichloroethane (M.p. −45° C.). CuCN (0.45 g, 5.0 mmol, 7 mol %; Aldrich) was added to the flask via syringe as a slurry in dry THF. The resulting mixture was stirred for 1 hr at −30° C., then (S)-(+)-glycidyl tosylate (15.5 g, 68 mmol, Aldrich) dissolved in 10 mL of dry THF was added to the solution (addition time 30 min, reaction mixture temperature was maintained between −22 and −29° C.). The reaction was left stirring at −31° C. for 2 hr, then the DCE bath was replaced with a partially frozen o-xylene bath (o-xylene M.p. −25° C.). Over the next 3 hr the temperature was allowed to reach −18° C. HPLC analysis of the quenched aliquot showed complete disappearance of glycidyl tosylate.
- To the cold reaction mixture, 100 mL of aq. NH4Cl solution (prepared by 1:1 dilution of the saturated solution with water) was added. The phases were separated. The aqueous layer was extracted with 50 mL of ME. Combined organic solutions were washed with 30 mL of brine.
- Closure of the epoxide. To the solution of the intermediate hydroxytosylate was added aq. solution of NaOH prepared by mixing 20 mL of 10 M stock solution (200 mmol) with 30 mL of water. The resulting bi-phasic mixture was stirred rapidly with a magnetic stirrer so that the mixture was broken into fine emulsion. After 18 hr at room temp, (checked by HPLC) the mixture was transferred to a separatory funnel and the phases were separated. The aqueous phase was extracted with 100 mL of MTBE, combined organic solutions were washed with brine and dried with MgSO4. After filtration through a paper filter, light-yellow solution was evaporated in vacuum to give a mixture the epoxide and des-bromo-arene as a light-yellow oil which solidified upon cooling to room temp. Weight 23.06 g. The mixture was used in the subsequent step without purification.
-
- The epoxide (22.6 g of the crude mixture from the previous step, ca. 67 mmol), phthalimide (10.3 g, 70 mmol) and its potassium salt (12.9 g, 70 mmol) were placed in a 250 round-bottom flask equipped with a magnetic stirrer, a nitrogen inlet, and a temperature probe. Dry DMF (100 mL) was added to the mixture. The reaction flask was briefly purged with nitrogen and then was being heated at 75° C. with stirring for 20 hr (the progress was monitored by HPLC). Once no starting epoxide was detected, the mixture was allowed to cool to room temp, and then mixed with 200 mL of ice-water slush. The product was extracted with MTBE (2×100 mL). The organic solution was washed with solution prepared from 2 parts of 1 M aq. NaOH, 3 parts brine, and 5 parts water (2×100 mL), then with brine until neutral pH (Note: The product may start crystallizing during the extractions and washes. In that case it was brought back into solution by adding THF to the mixture). The resulting organic solution was dried with MgSO4, filtered through a paper filter and evaporated in vacuum. The product started to crystallize during the evaporation. The volume of the solvent was reduced to ca. 40 mL, then the residue was triturated with 200 mL of hexanes. The white solid was filtered, washed with hexanes and dried in air.
- Yield 23.25 g (74% over 3 steps, based on the amount of glycidyl tosylate). M.p. 165-168° C.
- 1H NMR (300 MHz, CDCl3) δ: 7.86 (m, 2H), 7.72 (m, 2H), 7.43 (m, 1H), 7.41 (m, 1H), 7.27 (m, 1H), 7.08 (dd, J=3.0, 8.8 Hz, 1H), 6.79 (dd, J=3.0 Hz, 8.1 Hz, 1H), 4.23 (d5, J=3.3, 4.3, 5.7, 7.9, 8.5 Hz, 1H), 3.85 (dd, J=3.3, 14.1 Hz, 1H), 3.80 (dd, J=8.5, 14.1 Hz, 1H), 3.42 (s, 3H), 2.96 (dd, J=4.3, 13.9 Hz, 1H), 2.92 (dd, J=7.9, 13.9 Hz, 1H), 2.80 (d, J=5.7 Hz, 1H).
- ES MS, m/z: 474 (N+H)+, Cl2 isotope pattern. Analytical purity: 97% (HPLC area % at 215 nm).
-
- In a 500 mL Erlenmeyer flask equipped with a magnetic stirrer, temperature probe and an addition funnel (suspended over the flask without attaching) was placed the product of the preceding step, 2S-3-[5-Fluoro-3-(2,6-dichlorophenyl)-2-methoxyphenyl]-1-N-phthalimidopropan-2-ol, (22.0 g, 46.4 mmol), CH2Cl2 (200 mL) and triethylamine (9.7 mL, 70 mmol). Into the addition funnel was placed CH2Cl2 (20 mL) and methanesulfonyl chloride (5.4 mL, 70 mL). The solution of MsCl was added dropwise (addition time 10 min) to the stirred solution in the flask (exothermic reaction, temp, rose to 32° C. by the end of addition). The reaction mixture was allowed to stir at room temp, for 2 hr (checked by HPLC). White solid separated from the solution over that time.
- Water (100 mL) was added to the reaction mixture while stirring it rapidly. About 120 mL of DCM was distilled off on a rotary evaporator. The residue was triturated with 200 mL of hexanes. The solid was filtered and washed excessively with water and hexanes. The cake was dried on the filter for 1 hr then overnight in a vacuum desiccator oven.
- Yield 25.2 g (98%) as a white fluffy crystals. M.p. >200° C. (decomp.)
- 1H NMR (300 MHz, CDCl3) δ: 7.86 (m, 2H), 7.72 (m, 2H), 7.43 (m, 2H), 7.29 (m, 1H), 7.09 (dd, J=3.1, 8.5 Hz, 1H), 6.82 (dd, J=3.1, 8.3 Hz, 1H), 5.28 (m, 1H), 4.09 (dd, J=8.6, 14.6 Hz, 1H), 3.90 (dd, J=3.3, 14.6 Hz, H), 3.45 (s, 3H), 3.18 (dd, J=5.4, 14.0 Hz, 1H), 3.09 (dd, J=7.8, 14.0 Hz, 1H), 2.65 (s, 3H). 13C NMR (100 MHz, dmso-J6) δ: 167.6, 157.6 (d, J=242 Hz), 152.4 (d, J-2 Hz), 134.8, 134.4, 134.3 (d, J=16 Hz), 131.6, 131.4 (d, J=20 Hz), 131.4, 130.8, 128.3, 123.1, 118.7 (d, J=22 Hz), 116.7 (d, J=24 Hz), 78.5, 60.5, 40.8, 37.6, 33.2.
- ES MS, m/z: 552 (M+H)+, Cl2 isotope pattern. Analytical purity 99.6% (HPLC area % at 215 nm).
-
- The product of the preceding step, 2S-3-[5-Fluoro-3-(2,6-dichlorophenyl)-2-methoxyphenyl]-1-N-phthalimidopropan-2-yl methanesulfonate, (22.1 g, 40.0 mmol) and dichloromethane (200 mL) were placed into a 500-mL flask equipped with a magnetic stirrer, a temperature probe, a nitrogen inlet and a 50-mL addition runnel. The flask and the addition runnel were purged briefly with nitrogen (just in case). The slurry in the flask was chilled in an ice bath to 4° C. A 1M solution of BBr3 in CH2Cl2 (Aldrich, 42 mL, 42 mmol) was placed into the addition runnel and was added dropwise to the stirred contents of the flask (addition time 12 min, temp, drifted from 4 to 10° C.). The stirring was continued allowing the temperature of the reaction mixture to reach 16° C. over 2-hr period and then at room temp (19° C.) for 3 hr longer. The reaction progress was monitored by HPLC (1% of unreacted starting material remained, area % at 215 nm). 1M
- The reaction mixture was quenched by slowly pouring it into the solution prepared from NaHCO3 (11 g, 131 mmol) and 200 mL of water (the reaction went fairly slow, no exotherm was observed, no excessive foaming either). Precipitate formed initially in the organic layer but dissolved after ca. 20 min of rapid stirring. After 30 min of stirring, the layers were separated. Aqueous layer was extracted with dichloromethane (2×50 mL). Combined organic solutions were washed with 100 mL of water, then dried with MgSO4 The drying agent was filtered off and washed with ethyl acetate. The volume of the filtrate was reduced to about 50 mL on rotary evaporator. The product separated as white or light-yellow solid. The slurry was triturated with 40 mL of a 50:50 hexanes-MTBE mixture, the solid was filtered, washed with the above mixture of solvents and dried on the filter.
- Yield 14.4 g (82%) as a light-yellow solid. M.p. 222.5-224.5° C.
- 1H NMR (400 MHz, dmso-J6) δ: 7.85 (m, 4H), 7.53 (m, 2H), 7.41 (m, 1H), 7.19 (dd, J=2.7, 8.2 Hz, 1H), 6.86 (dd, 7=2.7, 9.3 Hz, 1H), 5.09 (m, 1H), 3.79 (m, 2H), 3.43 (dd, J=9.3, 16.6 Hz, 1H), 3.15 (dd, J=5.9, 16.6 Hz, 1H). 13C NMR (100 MHz, dmso-4) δ: 167.8, 156.4 (d, J=237 Hz), 152.2, 134.5, 134.4 (d, J=30 Hz), 133.5, 131.5, 130.6, 128.6 (d, J=9.4 Hz), 128.1 (d, J=3.6 Hz), 123.1, 118.2, 118.1, 114.9 (d, J=9.3 Hz), 112.9 (d, J=25 Hz), 80.0, 41.1, 33.2.
- ES MS, m/z: 442 MH+, Cl2 isotope pattern. Analytical purity: 99.9% (HPLC area % at 215 nm).
-
- The product of the preceding step, 2R-7-(2,6-Dichlorophenyl)-5-fluoro-2,3-dihydro-2-(N-phthalimidomethyl)benzofuran, (12.9 g, 29.2 mmol) was mixed with 70 mL of isopropanol and 15 mL of water. Hydrazine hydrate (55% hydrazine content, Aldrich, 5 mL, 90 mmol) was then added and the reaction mixture was magnetically stirred and heated at gentle reflux for 2 hr. (In case by-product phthalyl hydrazide crystallizes out and gets in a way of stirring it is re-dissolved by adding 3:1 mixture of isopropanol-water. It is very little soluble in isopropanol alone.) Dissolution of the staring material and formation of a clear solution was an indication that the reaction is done. It was confirmed by HPLC analysis before working up the reaction mixture.
- To the hot solution was added 40 mL of 1 M aqueous NaOH and 100 mL of water. The product was extracted with MTBE (3×50 mL). Combined extracts were washed with 60 mL of 0.2 M aq. NaOH, then with water (2×50 mL) and finally with brine (50 mL). Resulting clear solution was dried over Na2SO4 for 1 hr, filtered through a paper filter and evaporated in vacuum to afford a light-yellow oil (it was slightly opalescent).
- The oil was dissolved in 50 mL of EtOAc and to the solution was added rapidly 2 M solution of HCl in diethyl ether (Aldrich, 15 mL, 30 mmol). The salt precipitated rapidly (exothermic) and froze in a single chunk. It was broken up by shaking it with 100 mL of ether, then the slurry was stirred for 30 min in an ice bath. The salt was filtered, washed with 100 mL of ether, dried first on the filter in the stream of air until the filter reached room temp, and then overnight in a vacuum desiccator over CaSO4.
- Yield 9.4 g (92%) as white crystals. M.p. 231-233° C.
- 1H NMR (400 MHz, dmso-d6) δ: 8.25 (broad s, 3H), 7.57 (m, J=8.1 Hz, 2H), 7.45 (dd, J=8.1 Hz, 1H), 7.24 (dd, J=2.6, 8.1 Hz, 1H), 6.90 (dd, J=2.6, 9.6 Hz, 111), 5.05 (d4, J=9.2, 7.9, 7.0, 4.5 Hz, H), 3.45 (dd, J=9.2, 16.6 Hz, 1H), 3.17 (dd, J=7.0, 16.6 Hz), 3.10 (dd, J=13.4, 4.5 Hz, 1H), 3.04 (dd, J=13.4, 7.9 Hz, 1H). Protons at 7.57 and 7.45 ppm form a second-order A2B spin system with JAB=8.1 Hz (determined by NMR simulation).
- 13C NMR (400 MHz, dmso-J6) δ: 156.4 (d, J=257 Hz), 151.9, 134.5, 134.2, 133.5, 130.5, 128.7 (d, J=11 Hz), 128.2 (d, J=21 Hz), 118.3 (d, J=9 Hz), 115.0 (d, J=25 Hz), 112.9 (d, J=25 Hz), 80.0, 42.1, 32.8.
- ES MS, m/z: 312 (M+H), Cl2 isotope pattern.
- Enantiomeric purity: 99.4% ee (chiral HPLC on Chiracel OD-H 0.46×25 cm, 1 mL/min 90% heptane/DIEA, 10% ethanol, area % at 280 nm).
- Analytical purity: 99.8% (HPLC on Prodigy ODS3 0.46×15 cm, 1 mL/min water/TFA-MeCN/TFA 100 min gradient 0-100%, area % at 215 nm). Seventeen impurities in the range of 0.003-0.06 area % were detected totaling 0.19%.
- For C15H13C3FNO found C, 51.59%, H, 3.81%, N, 3.87%, anionic Cl 10.49%; calc'd C, 51.68%, H, 3.76%, N, 4.02%, anionic Cl 10.17%.
- The ability of the compounds of this invention to act as 5HT2C agonists and partial agonists was established using several standard pharmacological test procedures; the procedures used and results obtained are provided below. In the test procedures, 5-HT stands for 5-hydroxytryptamine, mCPP stands for meta-chlorophenylpiperazine, and DOI stands for 1-(2,5-dimethoxy-4-iodophenyl)isopropylamine.
- To evaluate the affinity of various compounds of Formula 1 for activity at the 5-HT2C receptor, a CHO (Chinese Hamster Ovary) cell line transfected with the cDNA expressing the human 5-hydroxytryptamine-2C (h5-HT2C) receptor was maintained in DMEM (Dulbecco's Modified Eagle Media) supplied with fetal calf serum, glutamine, and the markers: guaninephosphoribosyl transferase (GTP) and hypoxanthinethymidine (HT). The cells were allowed to grow to confluence in large culture dishes with intermediate changes of media and splitting. Upon reaching confluence, the cells were harvested by scraping. The harvested cells were suspended in half volume of fresh physiological phosphate buffered saline (PBS) solution and centrifuged at low speed (900×g). This operation was repeated once. The collected cells were then homogenized with a polytron at setting #7 for 15 sec in ten volumes of 50 mM Tris.HCl, pH 7.4 and 0.5 mM EDTA. The homogenate was centrifuged at 900×g for 15 min to remove nuclear particles and other cell debris. The pellet was discarded and the supernatant fluid recentrifuged at 40,000×g for 30 min. The resulting pellet was resuspended in a small volume of Tris.HCl buffer and the tissue protein content was determined in aliquots of 10-25 μL volumes. Bovine Serum Albumin (BSA) was used as the standard in the protein determination by the method of Lowry et al., (J. Biol. Chem., 193:265 (1951). The volume of the suspended cell membranes was adjusted with 50 mM Tris.HCl buffer containing: 0.1% ascorbic acid, 10 mM pargyline and 4 mM CaCl2 to give a tissue protein concentration of 1-2 mg per ml of suspension. The preparation membrane suspension (many times concentrated) was aliquoted in 1 ml volumes and stored at −70 C until used in subsequent binding experiments.
- Binding measurements were performed in a 96 well microtiter plate format, in a total volume of 200 μL. To each well was added: 60 μL of incubation buffer made in 50 mM Tris.HCl buffer, pH 7.4 and containing 4 mM CaCl2; 20 μL of [125I] DOI (S.A., 2200 Ci/mmol, NEN Life Science).
- The dissociation constant, KD of [125I] DOI at the human serotonin 5-HT2C receptor was 0.4 nM by saturation binding with increasing concentrations of [125I] DOI. The reaction was initiated by the final addition of 100 μL of tissue suspension containing 50 μg of receptor protein. Nonspecific binding is measured in the presence of 1 μM unlabeled DOI added in 20.0 μL volume. Test compounds were added in 20.0 μL. The mixture was incubated at room temperature for 60 min. The incubation was stopped by rapid filtration. The bound ligand-receptor complex was filtered off on a 96 well unifilter with a Packard® Filtermate 196 Harvester. The bound complex caught on the filter disk was dried in a vacuum oven heated to 60° C. and the radioactivity measured by liquid scintillation with 40 μL Microscint-20 scintillant in a Packard TopCount® equipped with six (6) photomultiplier detectors.
- Specific binding is defined as the total radioactivity bound less the amount bound in the presence of 1 μM unlabeled DOI. Binding in the presence of varying concentrations of test drugs is expressed as percent of specific binding in the absence of drug. These results are then plotted as log % bound vs log concentration of test drug. Non linear regression analysis of data points yields both the IC50 and the Ki values of test compounds with 95% confidence limits. Alternatively, a linear regression line of decline of data points is plotted, from which the IC50 value can be read off the curve and the Ki value determined by solving the following equation:
-
- where L is the concentration of the radioactive ligand used and the KD is the dissociation constant of the ligand for the receptor, both expressed in nM.
- The following Ki's (95% confidence interval) are provided for various reference compounds:
-
Compound Ki Ritanserin 2.0 (1.3-3.1) nM Ketanserin 94.8 (70.7-127.0) nM Mianserin 2.7 (1.9-3.8) nM Clozapine 23.2 (16.0-34.0) nM Methiothepin 4.6 (4.0-6.0) nM Methysergide 6.3 (4.6-8.6) nM Loxapine 33.0 (24.0-47.0) nM mCPP 6.5 (4.8-9.0) nM DOI 6.2 (4.9-8.0) nM - The ability of the compounds of Formula 1 to produce an agonist response at brain 5-HT2C was assessed by determining their effect on calcium mobilization using the following procedure: CHO cells stably expressing the human 5-HT2C receptor were cultured in Dulbecco's modified Eagle's medium (DMEM) supplemented with 10% fetal bovine serum and non-essential amino acids. Cells were plated at a density of 40K cells/well in 96-well clear-bottom black-wall plates 24 hours prior to the evaluation of 5-HT2C receptor-stimulated calcium mobilization. For calcium studies, cells were loaded with the calcium indicator dye Fluo-3-AM in Hank's buffered saline (HBS) for 60 minutes at 37° C. Cells were washed with HBS at room temperature and transferred to the fluorometric imaging plate reader (FLIPR, Molecular Devices, Sunnyvale, Calif.) for acquisition of calcium images. Excitation at 488 nm was achieved with an Argon ion laser and a 510-560 nm emission filter was used. Fluorescence images and relative intensities were captured at 1 second intervals and cells were stimulated by addition of agonist after 10 baseline measurements using the internal fluidics module of the FLIPR. An increase in fluorescence counts corresponds to an increase in intracellular calcium.
- For the evaluation of agonist pharmacology the calcium changes in response to different concentrations of agonist were determined using a maximum minus minimum calculation of the raw fluorescence count data. Calcium changes were then expressed as a percentage of the response observed with a maximally effective concentration of 5-HT. EC50 values were estimated by non-linear regression analysis of the log-concentration % maximum 5-HT response curves using the 4-parameter logistic function. Preferred compounds are those with an EC50 of ≦about 1000 nM, preferably ≦about 100 nM, more preferably ≦about 20 nM, still more preferably ≦about 5 nM, and most preferably ≦about 2 nM.
- The following EC50's are provided for various reference compounds:
-
Compound EC50 5-HT 0.5 nM DOI 0.5 nM mCPP 5.4 nM - The results of the standard experimental test procedures described in the preceding paragraphs were as follows:
-
5-HT2C Affinity 5-HT2C Function Compound Ki (nM) EC50 (nM) Emax (%) Example 1 43 926 90 Example 2 16 61 90 Example 3 204 Example 4 26 562 100 Example 5 9 208 90 Example 6 84 Example 7 160 Example 8 9 188 85 Example 9 10 194 85 Example 10 42 179 60 Example 11 106 Example 12 127 Example 13 133 Example 14 78 Example 15 222 Example 16 274 451 65 Example 17 66 100 70 Example 18 5 9.6 100 Example 19 2 66 100 Example 20 24 178 70 Example 21 9 86 85 Example 22 5 25 90 Example 23 9 73 80 Example 24 36 Example 25 18 10 90 Example 26 71 79 100 Example 27 39 2015 80 Example 28 16 77 90 Example 29 35 229 80 Example 30 191 Example 31 1372 Example 32 419 Example 33 32 Example 34 37 Example 35 141 Example 36 15 Example 37 1 1 100 Example 38 56 540 100 Example 39 43 Example 40 122 Example 41 25 Example 42 17 162 100 Example 43 100 748 80 Example 44 3 7 100 Example 45 2 5 90 Example 46 54 Example 47 0.4 5.4 100 Example 48 0.3 2.4 100 Example 49 10 132 80 Example 50 1 14 100 Example 51 1 Example 52 13 Example 53 1 45 80 Example 54 0.5 9 85 Example 55 3 48 70 Example 56 1 60 100 Example 57 1 12 80 Example 58 9 313 60 Example 59 2 127 100 Example 60 0.3 12 100 Example 61 37 1092 30 Example 62 40 130 70 Example 63 52 Example 64 13 70 100 Example 65 11 187 100 Example 66 5 250 100 Example 67 83 5763 70 Example 68 5 144 90 Example 69 96 Example 70 2 22 100 Example 71 1 1.4 100 Example 72 33 511 85 Example 73 5 41 100 Example 74 3 11 100 Example 75 103 Example 76 3 25 90 Example 77 2 8 100 Example 78 41 161 90 Example 79 2 24 95 Example 80 1 17 90 Example 81 24 294 50 Example 82 15 275 95 Example 83 1 7.9 100 Example 84 11 Example 85 5 557 100 Example 86 75 963 90 Example 87 0.8 20 90 Example 88 48 Example 89 40 Example 90 8 Example 91 5 45 100 Example 92 62 Example 93 13 874 80 Example 94 176 Example 95 1 65 100 Example 96 1 27 100 Example 97 4 577 60 Example 98 60 Example 99 21 838 60 Example 100 0.2 120 100 Example 101 0.2 0.32 100 Example 102 8 32 65 Example 103 7 996 80 Example 104 1 241 100 Example 105 1 4 95 Example 106 16 91 50 Example 107 1 93 100 Example 108 4 39 95 Example 109 25 3220 40 Example 110 9 1002 70 Example 111 26 Example 112 55 Example 113 130 Example 114 471 Example 115 79 Example 116 527 Example 117 263 Example 118 319 Example 119 78 Example 120 128 Example 121 44 681 60 Example 122 95 931 70 Example 123 207 Example 124 53 Example 125 276 Example 126 17 2715 40 Example 127 20 Example 128 41 24 70 Example 129 0.3 0.2 100 Example 130 4.8 54 80 Example 131 1.5 34 90 Example 132 20 1484 50 Example 133 3.6 66 80 Example 134 483 Example 135 131 Example 136 124 Example 137 1.2 473 90 Example 138 7.4 3802 60 Example 139 2.5 6 90 Example 140 0.3 0.72 90 Example 141 0.07 0.03 90 Example 142 1.6 101 80 Example 143 6.3 1 90 Example 144 6.1 4 90 Example 145 91 Example 146 2.4 5 90 Example 147 1.3 7 90 Example 148 12 290 70 Example 149 0.15 0.97 100 Example 150 4.1 74 100 Example 151 1.1 27 100 Example 152 6.6 202 70 Example 154 6.2 65 90 Example 155 9 43 90 Example 156 4.7 6 90 Example 157 58 Example 158 1.1 42 100 Example 159 12 636 80 Example 160 32 100 Example 161 8 32 90 Example 162 13 24 100 Example 163 0.23 2 90 Example 164 0.28 0.3 100 Example 165 18 80 70 Example 166 8 0.2 90 Example 167 3.1 21 90 Example 168 2 1 100 Example 169 14 50 100 Example 170 3.3 14 90 Example 171 0.88 0.7 100 Example 172 185 Example 173 326 Example 174 203 Example 175 384 Example 176 488 Example 177 353 Example 178 310 Example 179 435 Example 180 290 Example 181 146 Example 182 279 Example 183 178 Example 184 185 Example 185 159 Example 186 171 Example 187 247 Example 188 579 Example 189 363 Example 190 186 Example 191 270 Example 192 142 Example 193 246 Example 194 127 Example 195 0.48 9 80 Example 196 108 Example 197 63 Example 198 17 903 60 Example 199 19 416 80 Example 200 12 369 80 Example 201 8 396 80 Example 202 11 105 80 Example 203 8.5 187 80 Example 204 1.3 336 90 Example 205 3 280 80 Example 206 1.7 4 90 Example 207 128 112 80 Example 208 1.9 0.36 100 Example 209 2.3 57 90 Example 210 36 Example 211 19 672 70 Example 212 2.4 11 90 Example 213 9 100 Example 214 79 70 Example 215 5 80 80 Example 216 0.7 0.2 100 Example 217 0.4 143 70 Example 218 0.7 0.2 90 Example 219 7 79 90 Example 220 8 30 90 Example 221 1.4 2 90 Example 222 18 120 80 Example 223 10 30 80 Example 224 18 455 70 Example 225 1.2 3 90 Example 226 1.3 30 90 Example 227 1.5 3 95 Example 228 313 70 Example 229 0.4 6 100 Example 230 0.6 48 90 Example 231 0.4 80 Example 232 114 50 Example 233 614 20 Example 234 11 90 Example 235 49 50 Example 236 123 70 Example 237 0.57 3 80 Example 238 529 40 Example 239 1433 40 Example 240 89 70 Example 241 0.3 29 90 Example 242 3 48 90 Example 243 0.25 50 90 Example 244 0.74 52 90 Example 245 2 57 100 Example 246 23 1491 90 Example 247 15 164 90 Example 248 9 225 80 Example 249 4 21 90 Example 250 2.5 72 90 Example 251 0.38 8 90 Example 252 1.1 3 100 Example 253 8.6 251 90 Example 254 0.89 11 90 Example 255 5 79 90 Example 256 0.74 4 100 Example 257 28 194 80 Example 258 42 734 80 Example 259 69 Example 260 0.13 22 90 Example 261 0.5 67 90 Example 262 471 70 Example 263 1.8 0.8 100 Example 266 4.9 3 90 Example 267 730 80 Example 268 961 50 Example 269 5124 20 Example 271 594 90 Example 272 845 70 Example 274 330 70 Example 278 726 60 Example 279 155 70 Example 280 288 70 Example 281 3.8 35 90 Example 282 1.7 43 90 Example 283 1.2 6 100 Example 284 0.8 7 100 Example 286 0.76 6 100 Example 287 0.13 21 90 Example 288 7.1 38 100 Example 289 1 44 100 Example 290 1.7 58 80 Example 291 0.4 22 100 Example 292 4.9 66 100 Example 293 3.8 7 90 Example 294 0.11 8 90 Example 295 8 90 Example 296 50 80 Example 297 0.56 0.73 100 Example 298 11 30 90 Example 299 0.19 0.1 100 Example 300 0.1 3 90 Example 301 2 31 90 Example 302 0.3 2 100 Example 303 0.2 Example 304 1.7 Example 305 1.1 Example 306 0.58 0.64 100 Example 307 1 49 90 Example 308 0.9 24 90 Example 309 8 107 90 Example 310 13 137 90 Example 311 25 63 90 Example 312 15 25 90 Example 313 164 70 90 Example 314 18 42 90 Example 315 25 19 90 Example 316 64 Example 317 84 Example 318 98 Example 319 83 Example 320 107 Example 321 59 Example 322 427 Example 323 161 Example 324 60 Example 325 320 Example 326 34 228 80 Example 327 255 Example 328 61 Example 329 87 Example 330 88 Example 331 38 271 80 Example 332 37 111 80 Example 333 13 70 90 Example 334 324 Example 335 192 Example 336 45 123 90 Example 337 34 48 90 Example 338 14 44 90 Example 339 328 Example 340 88 Example 341 36 231 90 Example 342 28 590 80 Example 343 12 49 90 Example 344 275 2916 60 Example 345 98 Example 346 5000 Example 347 5000 Example 348 529 Example 349 760 Example 350 497 Example 351 87 Example 352 876 Example 353 845 Example 354 610 Example 355 385 Example 356 0.63 63 100 Example 357 18 2 100 Example 358 7 Example 359 10 8 90 Example 361 33 73 90 Example 362 36 343 70 Example 363 26 225 70 Example 364 0.9 62 85 Example 365 24 15 100 Example 366 13 394 80 Example 367 0.21 3 100 Example 368 1.4 4 90 Example 369 283 90 Example 370 30 190 80 Example 371 14 64 80 Example 372 23 224 80 Example 373 61 859 60 Example 374 0.6 19 100 Example 375 71 Example 376 88 Example 377 194 Example 378 201 Example 379 453 Example 380 424 Example 381 923 Example 382 801 Example 383 1758 Example 384 1255 Example 385 1354 Example 386 1025 Example 387 1549 Example 388 1580 Example 389 1620 Example 390 1.8 2 80 Example 391 0.2 80 Example 393 21.5 45 60 Example 395 0.3 0.4 90 Example 396 0.3 Example 397 1.6 Example 398 0.04 0.1 100 Example 400 0.5 Example 401 0.38 0.7 90 Example 402 0.24 0.1 90 Example 404 0.4 Example 406 0.51 9 100 Example 407 8.5 149 60 Example 408 0.46 6 90 Example 409 3 22 90 Example 410 0.08 0.05 90 Example 411 2.6 57 80 Example 412 5.3 34 90 Example 413 21 8 90 Example 414 3.4 781 60 Example 415 1.1 109 70 Example 416 1.6 467 70 Example 417 3.7 183 60 Example 418 1.1 59 80 Example 419 3.8 1359 80 Example 420 7.0 504 80 Example 421 1.5 93 70 Example 422 443 80 Example 423 6.1 28 70 Example 424 49 90 Example 425 9 100 Example 426 17 100 Example 427 298 80 Example 428 69 80 Example 429 2.8 16 92 Example 430 448 80 Example 431 63 90 Example 432 72 80 Example 433 3.5 1 100 Example 434 0.03 7 90 Example 435 82 80 Example 436 55 90 Example 437 30 80 Example 438 2.4 68 70 Example 439 0.45 6 90 Example 440 1.2 9 100 Example 441 10 531 70 Example 442 0.2 6 90 Example 443 4.8 5 90 Example 444 37 80 Example 445 0.48 1 90 Example 446 460 70 Example 447 3 90 Example 448 7 78 70 Example 449 1 2 90 Example 450 0.27 0.8 100 Example 451 0.31 137 80 Example 452 24 153 80 Example 453 24 80 Example 454 0.26 0.39 90 Example 456 4.1 50 100 Example 457 38 740 50 Example 458 17 212 80 Example 459 24 16 90 Example 460 215 90 Example 461 34 80 Example 462 79 80 Example 463 21 89 80 Example 464 462 70 Example 465 496 60 Example 466 55 70 Example 467 257 80 Example 468 73 80 Example 469 21 80 Example 470 289 70 Example 471 14 90 Example 472 353 80 Example 475 3.2 25 80 Example 476 0.2 5 100 Example 477 6.7 9 80 Example 478 11 225 70 Example 479 0.5 71 80 Example 480 4.4 251 70 Example 481 1.5 75 80 Example 482 7 143 80 Example 483 5 58 80 Example 484 0.51 43 70 Example 485 3 32 90 Example 486 0.2 5 90 Example 487 0.06 3 100 Example 488 0.34 132 90 Example 489 3 39 90 Example 490 1 6 100 Example 491 22 200 80 Example 492 3.1 7 80 Example 493 11 8 90 Example 494 35 475 60 Example 495 41 338 60 Example 496 46 510 60 Example 497 37 315 70 Example 498 35 326 70 Example 499 3.6 57 90 Example 500 86 256 80 Example 501 45 70 70 Example 502 60 Example 503 78 Example 504 1.2 27 90 Example 505 371 Example 506 1601 Example 507 2726 Example 508 1795 Example 509 5000 Example 510 5000 Example 511 248 Example 512 810 Example 513 1148 Example 514 242 Example 515 965 Example 516 1581 Example 517 2140 Example 518 40 384 80 Example 519 488 Example 520 372 Example 521 246 Example 522 474 Example 523 61 Example 524 136 Example 525 559 Example 526 25 50 90 Example 527 4744 Example 528 1093 Example 529 616 Example 530 915 Example 531 409 Example 532 3355 Example 533 1516 Example 534 1049 Example 535 1091 Example 536 1119 Example 537 1695 Example 538 380 Example 539 209 Example 540 486 Example 541 316 Example 542 372 Example 543 0.2 100 Example 544 73 70 Example 545 0.14 0.1 100 Example 546 2.3 Example 547 1.8 Example 548 2.3 Example 549 3.1 Example 550 0.37 0.4 100 Example 551 0.55 17 90 Example 552 0.3 Example 554 41 2 70 Example 555 0.6 4 80 Example 558 265 70 Example 559 0.3 7 90 Example 560 0.35 2 100 Example 561 2.7 21 80 Example 562 0.48 2 90 Example 563 135 70 Example 564 43 90 Example 565 287 70 Example 566 3 70 Example 567 9 60 Example 568 4 80 Example 569 6 60 - The compounds of this invention thus have affinity for and agonist or partial agonist activity at brain serotonin 5HT2C receptors. They are therefore of interest for the treatment of the central nervous system conditions described previously herein.
- The entire disclosure of each patent, patent application, and publication cited or described in this document is hereby incorporated by reference.
Claims (9)
1-32. (canceled)
33. A method for treating a patient suffering from schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, substance-induced psychotic disorder, L-DOPA-induced psychosis, psychosis associated with Alzheimer's dementia, psychosis associated with Parkinson's disease, psychosis associated with Lewy body disease, dementia, memory deficit, or intellectual deficit disorder associated with Alzheimer's disease comprising administering to the patient a therapeutically effective amount of a compound of Formula 1:
or pharmaceutically acceptable salts thereof,
wherein:
R and R′ are, independently, hydrogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, or alkylcycloalkyl of 4 to 12 carbon atoms having 3 to 6 carbons in the cycloalkyl ring;
alternatively R and R′ can be taken together with the nitrogen to which they are attached to form a ring containing 2-5 carbon atoms, wherein one of the ring carbon atoms is optionally replaced by nitrogen, sulfur or oxygen;
R1 and R2 are, independently, hydrogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, or perfluoroalkyl of 1 to 6 carbon atoms;
R3a and R3b are, independently, hydrogen, halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, or perfluoroalkoxy of 1 to 6 carbon atoms;
R4, R5, R6, and R7 are, independently, hydrogen, halogen, cyano, hydroxyl, carboxyl, alkyl of 1 to 8 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, perfluoroalkoxy of 1 to 6 carbon atoms, aryl of 5 to 10 carbon atoms, aryloxy of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl having 1 to 3 heteroatoms each independently selected from nitrogen, oxygen or sulfur, alkenyl of 2 to 8 carbon atoms, alkanoyl of 2 to 6 carbon atoms, alkanoyloxy of 2 to 6 carbon atoms, carboalkoxy of 2 to 6 carbon atoms, carboxamido, alkanamido of 2 to 6 carbon atoms, alkanesulfonamido of 1 to 6 carbon atoms, amino, monoalkylamino of 1 to 6 carbon atoms, dialkylamino of 1 to 6 carbon atoms per alkyl moiety, cycloalkyl of 3 to 8 carbon atoms, or 3 to 8 membered heterocycloalkyl having 1 to 3 heteroatoms each independently selected from nitrogen, oxygen or sulfur, wherein the cycloalkyl and heterocycloalkyl groups are saturated or partially saturated; and
n is 1, 2 or 3;
wherein at least one of R4, R5, R6 and R7 is branched alkyl of 3 to 8 carbon atoms, branched alkenyl of 3 to 8 carbon atoms, or —Y—R8, wherein Y is selected from a direct bond, lower alkyl, lower ankenyl, O, and NH and R8 is aryl of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl, cycloalkyl of 3 to 8 carbon atoms, or 3 to 8 membered heterocycloalkyl; and
wherein any aryl, heteroaryl, cycloalkyl or heterocycloalkyl may optionally be substituted with 1 to 5 substituents independently selected from halogen, hydroxyl, cyano, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, or perfluoroalkoxy of 1 to 6 carbon atoms.
34. The method of claim 33 wherein the patient is suffering from schizophrenia.
35. A method for treating a patient suffering from bipolar disorders, depressive disorders, mood episodes, anxiety disorders, adjustment disorders, or eating disorders comprising comprising administering to the patient a therapeutically effective amount of a compound of Formula 1:
or pharmaceutically acceptable salts thereof,
wherein:
R and R′ are, independently, hydrogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, or alkylcycloalkyl of 4 to 12 carbon atoms having 3 to 6 carbons in the cycloalkyl ring;
alternatively R and R′ can be taken together with the nitrogen to which they are attached to form a ring containing 2-5 carbon atoms, wherein one of the ring carbon atoms is optionally replaced by nitrogen, sulfur or oxygen;
R1 and R2 are, independently, hydrogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, or perfluoroalkyl of 1 to 6 carbon atoms;
R3a and R3b are, independently, hydrogen, halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, or perfluoroalkoxy of 1 to 6 carbon atoms;
R4, R5, R6, and R7 are, independently, hydrogen, halogen, cyano, hydroxyl, carboxyl, alkyl of 1 to 8 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, perfluoroalkoxy of 1 to 6 carbon atoms, aryl of 5 to 10 carbon atoms, aryloxy of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl having 1 to 3 heteroatoms each independently selected from nitrogen, oxygen or sulfur, alkenyl of 2 to 8 carbon atoms, alkanoyl of 2 to 6 carbon atoms, alkanoyloxy of 2 to 6 carbon atoms, carboalkoxy of 2 to 6 carbon atoms, carboxamido, alkanamido of 2 to 6 carbon atoms, alkanesulfonamido of 1 to 6 carbon atoms, amino, monoalkylamino of 1 to 6 carbon atoms, dialkylamino of 1 to 6 carbon atoms per alkyl moiety, cycloalkyl of 3 to 8 carbon atoms, or 3 to 8 membered heterocycloalkyl having 1 to 3 heteroatoms each independently selected from nitrogen, oxygen or sulfur, wherein the cycloalkyl and heterocycloalkyl groups are saturated or partially saturated; and
n is 1, 2 or 3;
wherein at least one of R4, R5, R6 and R7 is branched alkyl of 3 to 8 carbon atoms, branched alkenyl of 3 to 8 carbon atoms, or —Y—R8, wherein Y is selected from a direct bond, lower alkyl, lower ankenyl, O, and NH and R8 is aryl of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl, cycloalkyl of 3 to 8 carbon atoms, or 3 to 8 membered heterocycloalkyl; and
wherein any aryl, heteroaryl, cycloalkyl or heterocycloalkyl may optionally be substituted with 1 to 5 substituents independently selected from halogen, hydroxyl, cyano, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, or perfluoroalkoxy of 1 to 6 carbon atoms.
36. The method of claim 35 wherein the bipolar disorder is bipolar I disorder, bipolar II disorder, or cyclothymic disorder; the depressive disorder is major depressive disorder, dysthymic disorder, or substance-induced mood disorder; the mood episode is major depressive episode, manic episode, mixed episode, or hypomanic episode; the anxiety disorder is panic attack, agoraphobia, panic disorder, specific phobia, social phobia, obsessive compulsive disorder, posttraumatic stress disorder, acute stress disorder, generalized anxiety disorder, separation anxiety disorder, or substance-induced anxiety disorder.
37. The method of claim 36 wherein the condition is depressive disorder, bipolar disorder or mood episode.
38. A method for treating a patient suffering from epilepsy, sleep disorders, migraines, sexual dysfunction, drug addiction, alcohol addiction, gastrointestinal disorders, or obesity comprising administering to the patient a therapeutically effective amount of a compound of Formula 1:
or pharmaceutically acceptable salts thereof,
wherein:
R and R′ are, independently, hydrogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, or alkylcycloalkyl of 4 to 12 carbon atoms having 3 to 6 carbons in the cycloalkyl ring;
alternatively R and R′ can be taken together with the nitrogen to which they are attached to form a ring containing 2-5 carbon atoms, wherein one of the ring carbon atoms is optionally replaced by nitrogen, sulfur or oxygen;
R3a and R3b are, independently, hydrogen, halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, or perfluoroalkoxy of 1 to 6 carbon atoms;
R4, R5, R6, and R7 are, independently, hydrogen, halogen, cyano, hydroxyl, carboxyl, alkyl of 1 to 8 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, perfluoroalkoxy of 1 to 6 carbon atoms, aryl of 5 to 10 carbon atoms, aryloxy of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl having 1 to 3 heteroatoms each independently selected from nitrogen, oxygen or sulfur, alkenyl of 2 to 8 carbon atoms, alkanoyl of 2 to 6 carbon atoms, alkanoyloxy of 2 to 6 carbon atoms, carboalkoxy of 2 to 6 carbon atoms, carboxamido, alkanamido of 2 to 6 carbon atoms, alkanesulfonamido of 1 to 6 carbon atoms, amino, monoalkylamino of 1 to 6 carbon atoms, dialkylamino of 1 to 6 carbon atoms per alkyl moiety, cycloalkyl of 3 to 8 carbon atoms, or 3 to 8 membered heterocycloalkyl having 1 to 3 heteroatoms each independently selected from nitrogen, oxygen or sulfur, wherein the cycloalkyl and heterocycloalkyl groups are saturated or partially saturated; and
n is 1, 2 or 3;
wherein at least one of R4, R5, R6 and R7 is branched alkyl of 3 to 8 carbon atoms, branched alkenyl of 3 to 8 carbon atoms, or —Y—R8, wherein Y is selected from a direct bond, lower alkyl, lower ankenyl, O, and NH and R8 is aryl of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl, cycloalkyl of 3 to 8 carbon atoms, or 3 to 8 membered heterocycloalkyl; and
wherein any aryl, heteroaryl, cycloalkyl or heterocycloalkyl may optionally be substituted with 1 to 5 substituents independently selected from halogen, hydroxyl, cyano, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, or perfluoroalkoxy of 1 to 6 carbon atoms.
39. A method for treating a patient suffering from a central nervous system deficiency associated with trauma, stroke, or spinal cord injury comprising administering to the patient a therapeutically effective amount of a compound of Formula 1:
or pharmaceutically acceptable salts thereof,
wherein:
R and R′ are, independently, hydrogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, or alkylcycloalkyl of 4 to 12 carbon atoms having 3 to 6 carbons in the cycloalkyl ring;
alternatively R and R′ can be taken together with the nitrogen to which they are attached to form a ring containing 2-5 carbon atoms, wherein one of the ring carbon atoms is optionally replaced by nitrogen, sulfur or oxygen;
R1 and R2 are, independently, hydrogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, or perfluoroalkyl of 1 to 6 carbon atoms;
R3a and R3b are, independently, hydrogen, halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, or perfluoroalkoxy of 1 to 6 carbon atoms;
R4, R5, R6, and R7 are, independently, hydrogen, halogen, cyano, hydroxyl, carboxyl, alkyl of 1 to 8 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, perfluoroalkoxy of 1 to 6 carbon atoms, aryl of 5 to 10 carbon atoms, aryloxy of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl having 1 to 3 heteroatoms each independently selected from nitrogen, oxygen or sulfur, alkenyl of 2 to 8 carbon atoms, alkanoyl of 2 to 6 carbon atoms, alkanoyloxy of 2 to 6 carbon atoms, carboalkoxy of 2 to 6 carbon atoms, carboxamido, alkanamido of 2 to 6 carbon atoms, alkanesulfonamido of 1 to 6 carbon atoms, amino, monoalkylamino of 1 to 6 carbon atoms, dialkylamino of 1 to 6 carbon atoms per alkyl moiety, cycloalkyl of 3 to 8 carbon atoms, or 3 to 8 membered heterocycloalkyl having 1 to 3 heteroatoms each independently selected from nitrogen, oxygen or sulfur, wherein the cycloalkyl and heterocycloalkyl groups are saturated or partially saturated; and
n is 1, 2 or 3;
wherein at least one of R4, R5, R6 and R7 is branched alkyl of 3 to 8 carbon atoms, branched alkenyl of 3 to 8 carbon atoms, or —Y—R8, wherein Y is selected from a direct bond, lower alkyl, lower ankenyl, O, and NH and R8 is aryl of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl, cycloalkyl of 3 to 8 carbon atoms, or 3 to 8 membered heterocycloalkyl; and
wherein any aryl, heteroaryl, cycloalkyl or heterocycloalkyl may optionally be substituted with 1 to 5 substituents independently selected from halogen, hydroxyl, cyano, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, or perfluoroalkoxy of 1 to 6 carbon atoms.
40. A composition comprising a compound of Formula 1:
or pharmaceutically acceptable salts thereof,
wherein:
R and R′ are, independently, hydrogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, or alkylcycloalkyl of 4 to 12 carbon atoms having 3 to 6 carbons in the cycloalkyl ring;
alternatively R and R′ can be taken together with the nitrogen to which they are attached to form a ring containing 2-5 carbon atoms, wherein one of the ring carbon atoms is optionally replaced by nitrogen, sulfur or oxygen;
R1 and R2 are, independently, hydrogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, or perfluoroalkyl of 1 to 6 carbon atoms;
R3a and R3b are, independently, hydrogen, halogen, hydroxyl, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, or perfluoroalkoxy of 1 to 6 carbon atoms;
R4, R5, R6, and R7 are, independently, hydrogen, halogen, cyano, hydroxyl, carboxyl, alkyl of 1 to 8 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, perfluoroalkoxy of 1 to 6 carbon atoms, aryl of 5 to 10 carbon atoms, aryloxy of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl having 1 to 3 heteroatoms each independently selected from nitrogen, oxygen or sulfur, alkenyl of 2 to 8 carbon atoms, alkanoyl of 2 to 6 carbon atoms, alkanoyloxy of 2 to 6 carbon atoms, carboalkoxy of 2 to 6 carbon atoms, carboxamido, alkanamido of 2 to 6 carbon atoms, alkanesulfonamido of 1 to 6 carbon atoms, amino, monoalkylamino of 1 to 6 carbon atoms, dialkylamino of 1 to 6 carbon atoms per alkyl moiety, cycloalkyl of 3 to 8 carbon atoms, or 3 to 8 membered heterocycloalkyl having 1 to 3 heteroatoms each independently selected from nitrogen, oxygen or sulfur, wherein the cycloalkyl and heterocycloalkyl groups are saturated or partially saturated; and
n is 1, 2 or 3;
wherein at least one of R4, R5, R6 and R7 is branched alkyl of 3 to 8 carbon atoms, branched alkenyl of 3 to 8 carbon atoms, or —Y—R8, wherein Y is selected from a direct bond, lower alkyl, lower ankenyl, O, and NH and R8 is aryl of 5 to 10 carbon atoms, 5 to 10 membered heteroaryl, cycloalkyl of 3 to 8 carbon atoms, or 3 to 8 membered heterocycloalkyl; and
wherein any aryl, heteroaryl, cycloalkyl or heterocycloalkyl may optionally be substituted with 1 to 5 substituents independently selected from halogen, hydroxyl, cyano, alkyl of 1 to 6 carbon atoms, perfluoroalkyl of 1 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, or perfluoroalkoxy of 1 to 6 carbon atoms; and
one or more pharmaceutically acceptable carriers.
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Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050261347A1 (en) * | 2003-10-24 | 2005-11-24 | Wyeth | Dihydrobenzofuranyl alkanamine derivatives and methods for using same |
US7435837B2 (en) | 2003-10-24 | 2008-10-14 | Wyeth | Dihydrobenzofuranyl alkanamine derivatives and methods for using same |
EP1730121B1 (en) * | 2004-02-26 | 2013-08-07 | Bayer Intellectual Property GmbH | 1,4-diaryl-dihydropyrimidin-2-ones and their use as human neutrophil elastase inhibitors |
ES2394177T3 (en) * | 2004-02-26 | 2013-01-23 | Bayer Intellectual Property Gmbh | 1,4-diaryl-dihydropyrimidin-2-one and its use as inhibitors of human neutrophil elastase |
WO2006000902A1 (en) * | 2004-06-25 | 2006-01-05 | Pfizer Products Inc. | Dihydrobenzofuran compounds and uses thereof |
JP5173190B2 (en) | 2004-08-25 | 2013-03-27 | 武田薬品工業株式会社 | Preventive and therapeutic agent for stress urinary incontinence and screening method thereof |
GT200500297A (en) * | 2004-10-21 | 2006-10-27 | ASYMMETRIC SYNTHESIS OF REPLACED DEHYDROBENZOFURANS | |
GT200500296A (en) * | 2004-10-21 | 2006-10-02 | ASYMMETRIC SYNTHESIS OF DEHYDROBENZOFURAN DERIVATIVES | |
WO2006116221A2 (en) * | 2005-04-22 | 2006-11-02 | Wyeth | Therapeutic combinations for the treatment or prevention of psychotic disorders |
MX2007013163A (en) | 2005-04-22 | 2008-01-21 | Wyeth Corp | Chromane and chromene derivatives and uses thereof. |
US20060258713A1 (en) * | 2005-04-22 | 2006-11-16 | Wyeth | Treatment of pain |
GT200600164A (en) * | 2005-04-22 | 2007-03-14 | DERIVATIVES OF DIHYDROBENZOFURANS AND USES OF THE SAME | |
AU2006239910A1 (en) * | 2005-04-22 | 2006-11-02 | Wyeth | Dihydrobenzofuran derivatives and uses thereof |
AU2006239917A1 (en) * | 2005-04-22 | 2006-11-02 | Wyeth | (7-arlysubstituted 2, 3-dihydr0-1-benz0furan-2-yl) alkylamines in the treatment' of substance abuse |
JP2008538573A (en) * | 2005-04-22 | 2008-10-30 | ワイス | Benzofuranyl alkanamine derivatives and their use as 5-HT2C agonists |
EP1871356A1 (en) * | 2005-04-22 | 2008-01-02 | Wyeth a Corporation of the State of Delaware | Dihydrobenzofuran derivatives and uses thereof |
MX2007013179A (en) * | 2005-04-22 | 2008-01-16 | Wyeth Corp | Crystal forms of {[(2r)-7-(2,6-dichlorophenyl)-5-fluoro-2,3- dihydro-1-benzofuran-2-yl]methyl}amine hydrochloride. |
WO2006116149A1 (en) * | 2005-04-22 | 2006-11-02 | Wyeth | New therapeutic combianations for the treatment or prevention of depression |
EP1874292A2 (en) * | 2005-04-24 | 2008-01-09 | Wyeth | Methods for modulating bladder function |
US20090203750A1 (en) * | 2005-08-24 | 2009-08-13 | Alan Kozikowski | 5-HT2C Receptor Agonists as Anorectic Agents |
WO2007112065A2 (en) * | 2006-03-24 | 2007-10-04 | Wyeth | Methods for treating cognitive and other disorders |
EP2727585A1 (en) | 2006-05-16 | 2014-05-07 | Takeda Pharmaceutical Company Limited | In-vivo screening method |
CL2007003043A1 (en) * | 2006-10-24 | 2008-05-30 | Wyeth Corp | CHROMAN DERIVATIVE COMPOUNDS; PHARMACEUTICAL COMPOSITION THAT UNDERSTANDS THEM; AND USE FOR THE TREATMENT OF A PSYCHOTIC, BIPOLAR, DEPRESSIVE AND ANXIETY DISORDER BETWEEN OTHERS. |
WO2008052088A1 (en) * | 2006-10-25 | 2008-05-02 | Wyeth | Chromane derivatives, synthesis thereof, and intermediates thereto |
US20100266504A1 (en) | 2007-11-15 | 2010-10-21 | Takahiro Matsumoto | Condensed pyridine derivative and use thereof |
WO2010104194A1 (en) * | 2009-03-10 | 2010-09-16 | Takeda Pharmaceutical Company Limited | Benzofuran derivatives |
WO2011071136A1 (en) | 2009-12-11 | 2011-06-16 | アステラス製薬株式会社 | Therapeutic agent for fibromyalgia |
EP2531485B1 (en) | 2010-02-04 | 2019-04-24 | The Board of Trustees of the University of Illionis | Highly selective 5-ht(2c) receptor agonists having antagonist activity at the 5-ht(2b) receptor |
WO2012030953A1 (en) | 2010-09-01 | 2012-03-08 | Arena Pharmaceuticals, Inc. | 5-ht2c receptor agonists in the treatment of disorders ameliorated by reduction of norepinephrine level |
WO2012087289A1 (en) | 2010-12-21 | 2012-06-28 | Colgate-Palmolive Company | Halogenated biphenols as antibacterial agents |
CN103242273B (en) * | 2012-02-09 | 2015-06-03 | 中国科学院上海药物研究所 | 2-arylbenzofuran-7-methanamide compound, preparation method and application thereof |
WO2015066344A1 (en) | 2013-11-01 | 2015-05-07 | Arena Pharmaceuticals, Inc. | 5-ht2c receptor agonists and compositions and methods of use |
WO2016123164A1 (en) | 2015-01-29 | 2016-08-04 | The Board Of Trustees Of The University Of Illinois | Cyclopropylmethanamines as selective 5-ht(2c) receptor agonists |
CN108084125B (en) * | 2016-11-23 | 2020-08-18 | 华东理工大学 | Benzoheterocyclylalkylamines and their use |
US20210052600A1 (en) | 2017-12-27 | 2021-02-25 | Takeda Pharmaceutical Company Limited | Therapeutic agents for stress urinary incontinence and incotinence of feces |
EP3878447A1 (en) | 2020-03-11 | 2021-09-15 | InterAx Biotech AG | Beta adrenergic receptor antagonists |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3513239A (en) * | 1967-03-15 | 1970-05-19 | Smithkline Corp | Pharmaceutical compositions containing 2-aminoalkyl coumaran derivatives and methods of treating depression therewith |
US3759927A (en) * | 1971-01-08 | 1973-09-18 | Ciba Geigy Corp | B-benzofurylmethyl-1,3,8-triazaspiro(4,5)decanes |
US5767132A (en) * | 1994-10-14 | 1998-06-16 | Merck Patent Gesellschaft Mit Beschrankter Haftung | Pyridyl chroman |
US6569894B1 (en) * | 2001-10-04 | 2003-05-27 | Bristol-Myers Squibb Company | Arylalkylbenzofuran derivatives as melatonergic agents |
Family Cites Families (94)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1200892A (en) | 1966-10-27 | 1970-08-05 | Ward Blenkinsop & Co Ltd | Production of 2-aminomethyl-2,3-dihydrobenzofurans |
US4205080A (en) | 1977-07-21 | 1980-05-27 | Shell Oil Company | 2,3-Dihydro benzofuran carboxamides |
US4237144A (en) | 1979-06-21 | 1980-12-02 | Merck & Co., Inc. | 2,3-Dihydro-2,6,7-trisubstituted-5-acylbenzofurans |
GB8515388D0 (en) * | 1985-06-18 | 1985-07-17 | Ici Plc | Heterocyclic compounds |
US4873325A (en) | 1986-06-25 | 1989-10-10 | Uop | Process for the production of amides |
FR2601950B1 (en) | 1986-07-22 | 1988-11-10 | Cerm Cent Europ Rech Mauvernay | N, N-DIMETHYL-N'-BENZOYL-N '((2,3-DIHYDRO) BENZOFURAN-2-YL-METHYL) 1,3-PROPANEDIAMINE, PREPARATION AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM |
US4992464A (en) | 1987-02-10 | 1991-02-12 | Abbott Laboratories | Heteroaryl N-hydroxy amides and ureas with polar substituents as 5-lipoxygenase inhibitors |
US5147888A (en) | 1989-12-04 | 1992-09-15 | G. D. Searle & Co. | N-terminal indolyy indolylalkylaminodiol β-amino acid derivatives |
US5171751A (en) | 1989-12-04 | 1992-12-15 | G. D. Searle & Co. | Benzofuran/benzofuranalkyl-N-terminal amino hydroxy |
US5110825A (en) | 1989-12-28 | 1992-05-05 | Shionogi & Co., Ltd. | Benzofuran derivative |
IT1239946B (en) | 1990-03-12 | 1993-11-27 | Biomedica Foscama Industria Chimicofarmaceutica | PROCEDURE FOR THE SYNTHESIS OF 5-ACYLOXY AND 5-ALCOXY-2,3-DIHYDRO-4,6,7-TRIMETHYL-2- (RS) -BENZOFURANACETICI |
US5100825A (en) * | 1990-11-16 | 1992-03-31 | Micron Technology, Inc. | Method of making stacked surrounding reintrant wall capacitor |
IL101785A0 (en) | 1991-05-10 | 1992-12-30 | Fujisawa Pharmaceutical Co | Urea derivatives,processes for the preparation thereof and pharmaceutical compositions containing the same |
EP0530149A1 (en) | 1991-08-30 | 1993-03-03 | Ciba-Geigy Ag | Parasiticide |
JP3153335B2 (en) | 1992-06-05 | 2001-04-09 | 興和株式会社 | Quinoline derivatives or salts thereof |
US5616537A (en) | 1992-07-03 | 1997-04-01 | Kumiai Chemical Industry Co., Ltd. | Condensed heterocyclic derivatives and herbicides |
JP3283114B2 (en) | 1992-09-07 | 2002-05-20 | クミアイ化学工業株式会社 | Condensed heterocyclic derivatives and agricultural and horticultural fungicides |
US5436246A (en) | 1992-09-17 | 1995-07-25 | Merrell Dow Pharmaceuticals Inc. | Serotonin receptor agents |
JPH08502484A (en) | 1992-10-14 | 1996-03-19 | メルク エンド カンパニー インコーポレーテッド | Fibrinogen receptor antagonist |
US5292900A (en) | 1992-12-18 | 1994-03-08 | Abbott Laboratories | O-substituted N-hydroxyurea derivatives |
EP0638071B1 (en) | 1992-12-28 | 1997-04-09 | Eisai Co., Ltd. | Heterocyclic carbonic acid derivatives which bind to retinoid receptors (rar) |
US5663368A (en) | 1993-07-14 | 1997-09-02 | Smithkline Beecham Corporation | Synthesis of acid addition salts of hydroxylamines |
US5852046A (en) | 1993-08-03 | 1998-12-22 | Hoechst Aktiengesellschaft | Benzo-fused heterocyclic compounds having a 5-membered ring processes for their preparation their use as medicaments their use as diagnostic agents and medicaments containing them |
US5350748A (en) | 1993-08-18 | 1994-09-27 | Warner-Lambert Company | 3-thio or amino substituted-benzo[b]thiophene-2-carboxamides and 3-oxygen, thio, or amino substituted-benzofuran-2-carboxamides as inhibitors of cell adhesion |
JP2999669B2 (en) | 1993-08-24 | 2000-01-17 | 株式会社三和化学研究所 | Benzo [b] furancarboxamide derivatives, their preparation and use |
WO1995029911A1 (en) | 1994-04-28 | 1995-11-09 | Merck Sharp & Dohme Limited | Benzofuran derivatives as d4 receptor antagonists |
GB9408577D0 (en) | 1994-04-29 | 1994-06-22 | Fujisawa Pharmaceutical Co | New compound |
US5798382A (en) * | 1994-07-07 | 1998-08-25 | Asahi Kasei Kogyo Kabushiki Kaisha | 2,3-dihydrobenzofuran derivatives, method for producing the same, and use thereof |
US6150402A (en) | 1994-08-15 | 2000-11-21 | Loma Linda University Medical Center | Natriuretic compounds |
US5585492A (en) | 1994-10-11 | 1996-12-17 | G. D. Searle & Co. | LTA4 Hydrolase inhibitors |
US5589482A (en) | 1994-12-14 | 1996-12-31 | Pfizer Inc. | Benzo-thiophene estrogen agonists to treat prostatic hyperplasia |
US6514996B2 (en) | 1995-05-19 | 2003-02-04 | Kyowa Hakko Kogyo Co., Ltd. | Derivatives of benzofuran or benzodioxole |
ATE221057T1 (en) | 1995-08-21 | 2002-08-15 | Takeda Chemical Industries Ltd | QUINONE COMPOUND, ITS PRODUCTION AND APPLICATION. |
GB9517559D0 (en) * | 1995-08-26 | 1995-10-25 | Smithkline Beecham Plc | Novel compounds |
US5684041A (en) | 1996-02-01 | 1997-11-04 | The Procter & Gamble Company | Dihydrobenzofuran and related compounds useful as anti-inflammatory agents |
US5955495A (en) | 1996-05-03 | 1999-09-21 | Hoffmann-La Roche Inc. | Method of treating diseases of the CNS |
EP0846683B1 (en) | 1996-12-03 | 2001-09-19 | F. Hoffmann-La Roche Ag | 4-Hydroxy-piperidine derivatives |
CA2276278C (en) | 1997-02-27 | 2009-04-07 | Takeda Chemical Industries, Ltd. | Amine compounds, their production and use |
FR2772766B1 (en) | 1997-12-24 | 2000-06-30 | Adir | NOVEL HETEROCYCLIC COMPOUNDS, PROCESS FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM |
DE19909760B4 (en) | 1998-04-17 | 2015-05-21 | Merck Patent Gmbh | Benzofuran derivatives |
US6251936B1 (en) | 1998-05-12 | 2001-06-26 | American Home Products Corporation | Benzothiophenes, benzofurans, and indoles useful in the treatment of insulin resistance and hyperglycemia |
AU753691B2 (en) | 1998-06-18 | 2002-10-24 | Novartis Ag | Benzazole compounds and their use |
GB9819035D0 (en) * | 1998-09-01 | 1998-10-28 | Cerebrus Res Ltd | Chemical compounds VII |
US6255324B1 (en) | 1998-11-25 | 2001-07-03 | Ned D. Heindel | Amino-and mercurio-substituted 4′,5'-dihydropsoralens and therapeutical uses thereof |
US6048891A (en) | 1998-12-17 | 2000-04-11 | Loma Linda University Medical Center | Use of γ-tocopherol and its oxidative metabolite LLU-α in the treatment of natriuretic disease |
US6410562B1 (en) | 1998-12-18 | 2002-06-25 | Eli Lilly And Company | Hypoglycemic imidazoline compounds |
AU2619800A (en) * | 1999-01-27 | 2000-08-18 | Eli Lilly And Company | Aminoalkylbenzofurans as serotonin (5-ht(2c)) agonists |
EP1211253B1 (en) | 1999-08-20 | 2004-10-13 | Takeda Chemical Industries, Ltd. | Tricyclic dihydrobenzofuran derivatives, process for the preparation thereof and agents |
DE10044091A1 (en) | 2000-09-07 | 2002-04-04 | Merck Patent Gmbh | chromanone |
WO2002072549A1 (en) | 2001-03-12 | 2002-09-19 | Millennium Pharmaceuticals, Inc. | Functionalized heterocycles as modulators of chemokine receptor function and methods of use therefor |
US20020177589A1 (en) | 2001-03-16 | 2002-11-28 | Cowart Marlon D. | Novel amines as histamine-3 receptor ligands and their therapeutic applications |
US20020183309A1 (en) | 2001-03-16 | 2002-12-05 | Cowart Marlon D. | Novel amines as histamine-3 receptor ligands and their therapeutic applications |
US6969730B2 (en) | 2001-03-16 | 2005-11-29 | Abbott Laboratories | Amines as histamine-3 receptor ligands and their therapeutic applications |
JPWO2002100833A1 (en) | 2001-06-12 | 2004-09-24 | 住友製薬株式会社 | Rho kinase inhibitor |
WO2003016276A2 (en) | 2001-08-14 | 2003-02-27 | Eli Lilly And Company | 3-substituted oxindole beta-3 agonists |
WO2003029239A1 (en) | 2001-10-04 | 2003-04-10 | Wyeth | Chroman and benzofuran derivatives as 5-hydroxytryptamine-6 ligands |
EP1432696A1 (en) | 2001-10-04 | 2004-06-30 | Wyeth | Chroman derivatives as 5-hydroxytryptamine-6 ligands |
US6667322B2 (en) | 2001-10-05 | 2003-12-23 | Wyeth | Antidepressant chroman and chromene derivatives of 3-(1,2,3,6-tetrahydro-4-pyridinyl)-1H-indole |
US20030105830A1 (en) | 2001-12-03 | 2003-06-05 | Duc Pham | Scalable network media access controller and methods |
US20030134835A1 (en) | 2002-01-11 | 2003-07-17 | Arthur Hancock | Histamine-3 receptor ligands for diabetes conditions |
US20050113283A1 (en) | 2002-01-18 | 2005-05-26 | David Solow-Cordero | Methods of treating conditions associated with an EDG-4 receptor |
US6653346B1 (en) | 2002-02-07 | 2003-11-25 | Galileo Pharmaceuticals, Inc. | Cytoprotective benzofuran derivatives |
DE10205274A1 (en) | 2002-02-08 | 2003-08-21 | Boehringer Ingelheim Pharma | New drug compositions containing in addition to anticholinergics heterocyclic compounds |
EP1348708A1 (en) | 2002-02-28 | 2003-10-01 | Sanofi-Synthelabo | Heteroaryl substituted 2-pyrimidinyl-6,7,8,9-tetrahydropyrimido[1,2-a]pyrimidin-4-one and 7-pyrimidinyl-2,3-dihydroimidazo[1,2-a]pyrimidin-5(1H)one derivatives |
AU2003219559A1 (en) * | 2002-03-29 | 2003-10-13 | Chugai Seiyaku Kabushiki Kaisha | Pharmaceutical composition for preventing or treating respiratory disease |
KR20030084444A (en) | 2002-04-26 | 2003-11-01 | 주식회사 파나진 | A Novel Monomer For Synthesis of PNA Oligomer And A Process For Producing The Same |
US20040009976A1 (en) | 2002-04-30 | 2004-01-15 | Kumiko Takeuchi | Hypoglycemic imidazoline compounds |
HUE041842T2 (en) | 2002-06-14 | 2019-05-28 | Toyama Chemical Co Ltd | Medicinal composition for improving brain function |
AU2003291012A1 (en) | 2002-11-15 | 2004-06-15 | Galileo Pharmaceuticals, Inc. | Chroman derivatives for the reduction of inflammation symptoms |
US7098241B2 (en) | 2002-12-16 | 2006-08-29 | Hoffmann-La Roche Inc. | Thiophene hydroxamic acid derivatives |
JP4727578B2 (en) | 2003-08-01 | 2011-07-20 | 中外製薬株式会社 | Heterocyclic compounds useful as malonyl-CoA decarboxylase inhibitors |
US7795242B2 (en) | 2003-10-15 | 2010-09-14 | The Brigham And Women's Hospital, Inc. | Methods and compositions for immunomodulation |
US7728155B2 (en) | 2003-10-24 | 2010-06-01 | Wyeth Llc | Dihydrobenzofuranyl alkanamines and methods for using same as cns agents |
US20050261347A1 (en) | 2003-10-24 | 2005-11-24 | Wyeth | Dihydrobenzofuranyl alkanamine derivatives and methods for using same |
US7435837B2 (en) | 2003-10-24 | 2008-10-14 | Wyeth | Dihydrobenzofuranyl alkanamine derivatives and methods for using same |
WO2005066151A2 (en) | 2003-12-19 | 2005-07-21 | Takeda San Diego, Inc. | Histone deacetylase inhibitors |
WO2005063240A1 (en) | 2003-12-22 | 2005-07-14 | The Brigham And Women's Hospital, Inc. | Methods and compositions for treatment of hypertension |
ATE525354T1 (en) | 2004-05-03 | 2011-10-15 | Janssen Pharmaceutica Nv | BENZOFURAN DERIVATIVES AS SELECTIVE ANDROGEN RECEPTOR MODULATORS (SARMS) |
EP1600447A1 (en) | 2004-05-28 | 2005-11-30 | Neuropharma S.A.U. | Butyrylcholinesterase selective inhibitors |
JP5026963B2 (en) | 2004-06-22 | 2012-09-19 | バーテックス ファーマシューティカルズ インコーポレイテッド | Heterocyclic derivatives for adjusting calcium channels |
GT200500296A (en) | 2004-10-21 | 2006-10-02 | ASYMMETRIC SYNTHESIS OF DEHYDROBENZOFURAN DERIVATIVES | |
GT200500297A (en) | 2004-10-21 | 2006-10-27 | ASYMMETRIC SYNTHESIS OF REPLACED DEHYDROBENZOFURANS | |
JP2008538573A (en) | 2005-04-22 | 2008-10-30 | ワイス | Benzofuranyl alkanamine derivatives and their use as 5-HT2C agonists |
MX2007013179A (en) | 2005-04-22 | 2008-01-16 | Wyeth Corp | Crystal forms of {[(2r)-7-(2,6-dichlorophenyl)-5-fluoro-2,3- dihydro-1-benzofuran-2-yl]methyl}amine hydrochloride. |
AU2006239917A1 (en) | 2005-04-22 | 2006-11-02 | Wyeth | (7-arlysubstituted 2, 3-dihydr0-1-benz0furan-2-yl) alkylamines in the treatment' of substance abuse |
WO2006116221A2 (en) | 2005-04-22 | 2006-11-02 | Wyeth | Therapeutic combinations for the treatment or prevention of psychotic disorders |
MX2007013151A (en) | 2005-04-22 | 2008-01-16 | Wyeth Corp | Benzodioxane and benzodioxolane derivatives and uses thereof. |
WO2006116149A1 (en) | 2005-04-22 | 2006-11-02 | Wyeth | New therapeutic combianations for the treatment or prevention of depression |
GT200600164A (en) | 2005-04-22 | 2007-03-14 | DERIVATIVES OF DIHYDROBENZOFURANS AND USES OF THE SAME | |
AU2006239910A1 (en) | 2005-04-22 | 2006-11-02 | Wyeth | Dihydrobenzofuran derivatives and uses thereof |
US20060258713A1 (en) | 2005-04-22 | 2006-11-16 | Wyeth | Treatment of pain |
MX2007013163A (en) | 2005-04-22 | 2008-01-21 | Wyeth Corp | Chromane and chromene derivatives and uses thereof. |
EP1871356A1 (en) | 2005-04-22 | 2008-01-02 | Wyeth a Corporation of the State of Delaware | Dihydrobenzofuran derivatives and uses thereof |
EP1874292A2 (en) | 2005-04-24 | 2008-01-09 | Wyeth | Methods for modulating bladder function |
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- 2004-10-21 US US10/970,714 patent/US7435837B2/en not_active Expired - Fee Related
- 2004-10-22 BR BRPI0415657-9A patent/BRPI0415657A/en not_active IP Right Cessation
- 2004-10-22 TW TW093132199A patent/TW200526615A/en unknown
- 2004-10-22 EP EP04796293A patent/EP1675840A1/en not_active Withdrawn
- 2004-10-22 WO PCT/US2004/035280 patent/WO2005044812A1/en active Application Filing
- 2004-10-22 JP JP2006536881A patent/JP2007509174A/en not_active Withdrawn
- 2004-10-22 RU RU2006117789/04A patent/RU2006117789A/en not_active Application Discontinuation
- 2004-10-22 CN CNA2004800383041A patent/CN1997635A/en not_active Withdrawn
- 2004-10-22 MX MXPA06004409A patent/MXPA06004409A/en unknown
- 2004-10-22 CA CA002542878A patent/CA2542878A1/en not_active Abandoned
- 2004-10-22 AU AU2004287809A patent/AU2004287809A1/en not_active Withdrawn
- 2004-10-22 PA PA20048615701A patent/PA8615701A1/en unknown
- 2004-10-22 KR KR1020067007874A patent/KR20060092257A/en not_active Application Discontinuation
- 2004-10-25 AR ARP040103868A patent/AR046309A1/en not_active Application Discontinuation
- 2004-10-25 PE PE2004001025A patent/PE20050482A1/en not_active Application Discontinuation
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2006
- 2006-04-11 IL IL174953A patent/IL174953A0/en unknown
- 2006-04-20 CR CR8349A patent/CR8349A/en not_active Application Discontinuation
- 2006-04-21 ZA ZA200603233A patent/ZA200603233B/en unknown
- 2006-04-24 EC EC2006006520A patent/ECSP066520A/en unknown
- 2006-05-12 NO NO20062139A patent/NO20062139L/en not_active Application Discontinuation
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3513239A (en) * | 1967-03-15 | 1970-05-19 | Smithkline Corp | Pharmaceutical compositions containing 2-aminoalkyl coumaran derivatives and methods of treating depression therewith |
US3759927A (en) * | 1971-01-08 | 1973-09-18 | Ciba Geigy Corp | B-benzofurylmethyl-1,3,8-triazaspiro(4,5)decanes |
US5767132A (en) * | 1994-10-14 | 1998-06-16 | Merck Patent Gesellschaft Mit Beschrankter Haftung | Pyridyl chroman |
US6569894B1 (en) * | 2001-10-04 | 2003-05-27 | Bristol-Myers Squibb Company | Arylalkylbenzofuran derivatives as melatonergic agents |
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WO2005044812A1 (en) | 2005-05-19 |
JP2007509174A (en) | 2007-04-12 |
IL174953A0 (en) | 2006-08-20 |
AU2004287809A1 (en) | 2005-05-19 |
CR8349A (en) | 2007-06-06 |
NO20062139L (en) | 2006-07-21 |
MXPA06004409A (en) | 2007-01-26 |
ZA200603233B (en) | 2008-11-26 |
TW200526615A (en) | 2005-08-16 |
CA2542878A1 (en) | 2005-05-19 |
RU2006117789A (en) | 2007-11-27 |
EP1675840A1 (en) | 2006-07-05 |
KR20060092257A (en) | 2006-08-22 |
CN1997635A (en) | 2007-07-11 |
ECSP066520A (en) | 2006-10-10 |
US20050143452A1 (en) | 2005-06-30 |
US7435837B2 (en) | 2008-10-14 |
AR046309A1 (en) | 2005-11-30 |
BRPI0415657A (en) | 2006-12-19 |
PA8615701A1 (en) | 2005-11-25 |
PE20050482A1 (en) | 2005-10-13 |
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