Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C39/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring
  • C07C39/12—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings
  • C07C39/17—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings containing other rings in addition to the six-membered aromatic rings, e.g. cyclohexylphenol
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
  • C07C37/11—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
  • C07C37/11—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms
  • C07C37/14—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms by addition reactions, i.e. reactions involving at least one carbon-to-carbon unsaturated bond
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
  • C07C37/11—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms
  • C07C37/16—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms by condensation involving hydroxy groups of phenols or alcohols or the ether or mineral ester group derived therefrom
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
  • C07C37/11—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms
  • C07C37/18—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms by condensation involving halogen atoms of halogenated compounds
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C2601/00—Systems containing only non-condensed rings
  • C07C2601/06—Systems containing only non-condensed rings with a five-membered ring
  • C07C2601/10—Systems containing only non-condensed rings with a five-membered ring the ring being unsaturated
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C2602/00—Systems containing two condensed rings
  • C07C2602/02—Systems containing two condensed rings the rings having only two atoms in common
  • C07C2602/04—One of the condensed rings being a six-membered aromatic ring
  • C07C2602/10—One of the condensed rings being a six-membered aromatic ring the other ring being six-membered, e.g. tetraline

Definitions

• This invention relates to the compositions 3-alkylated-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthols and certain 3,3′-dialkylated-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthols and to processes for making 3-alkylated-, and 3,3′-dialkylated-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthols, generally.
• Phosphorous-based ligands are useful as part of the catalyst system in industrially important reactions such as hydroformylation and hydrocyanation.
• the useful ligands include phosphines, phosphinites, phosphonites, and phosphites. See PCT patent applications WO 99/06146 and WO 99/62855. Both mono(phosphorous) ligands and bis(phosphorous) ligands are utilized in the art.
• Mono(phosphorous) ligands are compounds that contain a single phosphorus atom which serves as a donor to a transition metal, while bis(phosphorus) ligands, in general, contain two phosphorus donor atoms and typically form cyclic chelate structures with transition metals.
• rare earth metal trifluoromethanesulfonates as water-tolerant Lewis acid catalysts can be utilized in Friedel-Crafts alkylation of benzene and phenol derivatives with secondary alkyl methanesulfonates. See SynLett, 1998, 255-256 and Synthesis, 1999, 603-606.
• the present invention provides 3-alkylated-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthols of the formula (1) and 3,3′-dialkylated-5,5′, 6,6′,7,7′,8,8′-octahydro-2,2′-binaphthols of the formula (2).
• R is C 1 to C 20 alkyl, C 3 to C 20 cycloalkyl, or benzyl of the formula
• each R′ is independently H, alkyl or cycloalkyl of up to 6 carbons; provided that in formula (2), when R is alkyl, the alkyl must be other than methyl or t-butyl.
• the present invention provides a process for making 3-alkylated-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthols and 3,3′-dialkylated-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthols by contacting 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol with an alkene or cycloalkene in the presence of an acid catalyst such as aluminum chloride, trifluoromethanesulfonic acid, tosylic acid, phosphotungstic acid, silicotungstic acid, phosphomolybdic acid, zirconium or aluminum triflate, polymeric perfluorinated sulfonic acid (such as the DuPont material sold as Nafion®) and polymeric sulfonic acid (
• the present invention provides a process for making 3-alkylated-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthols and 3,3′-dialkylated-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthols by contacting 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol with benzyl halides or tertiary alkyl halides in the presence of a Lewis acid catalyst, such as aluminum chloride or zinc chloride.
• a Lewis acid catalyst such as aluminum chloride or zinc chloride.
• the present invention provides a process for making 3-alkylated-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthols and 3,3′-dialkylated-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthols by contacting 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol with alkyl sulfonates, fluorinated alkyl sulfonates, alkyl benzenesulfonates, or alkyl p-toluenesulfonates in the presence of an acid catalyst such as trifluoromethanesulfonic acid or scandium triflate.
• an acid catalyst such as trifluoromethanesulfonic acid or scandium triflate.
• the present invention provides a process for making 3-alkylated-5,5′,6,6′,7,7′, 8,8′-octahydro-2,2′-binaphthols and 3,3′-dialkylated-5,5′, 6,6′,7,7′, 8,8′-octahydro-2,2′-binaphthols by contacting 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol with benzyl alcohol, or secondary or tertiary alcohol in the presence of aluminum chloride, trifluoromethanesulfonic acid, tosylic acid, phosphotungstic acid, silicotungstic acid, phosphomolybdic acid, zirconium or aluminum triflate, polymeric perfluorinated sulfonic acid (such as Nafion®) or polymeric sulfonic acid.
• benzyl alcohol or secondary or tertiary alcohol in
• the present invention is a compound of the formula
• R is H
• R′ is ethyl, C 3 to C 6 secondary, tertiary, or cyclic alkyl
• R and R′ are the same and are selected from the group consisting of
• Preferred compounds are those wherein R and R′ are the same are selected from the group consisting of ethyl, isopropyl, cyclopentyl, and cyclohexyl.
• alkylated 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthols of this invention may be prepared by alkylation of 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol in the presence of a catalyst, as shown below.
• the starting material, 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol can be obtained by the hydrogenation of 2,2′-binaphthol using a PtO 2 catalyst, as described in Tetrahedron Lett. 1997, 5273.
• the first process aspect of the present invention is a process for making alkylated 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthols by an acid-catalyzed, selective alkylation of 5,5′, 6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol by alkenes or cycloalkenes in the presence of an acid catalyst.
• the acid catalyst may be a Lewis acid or a protic acid.
• Suitable catalysts include the following: AlCl 3 , trifluoromethanesulfonic acid, tosylic acid, phosphotungstic acid, silicotungstic acid, phosphomolybdic acid, zirconium or aluminum triflate, polymeric perfluorinated sulfonic acid (such as the material sold by DuPont as Nafion®) and polymeric sulfonic acid (such as the material sold by Aldrich as Amberlyst® 15 ion-exchange resin or the material sold by Dow as Dowex 32®). Phosphotungstic acid is preferred.
• the alkenes include monoethylenically unsaturated compounds containing from 3 to 20 carbons, such as propylene, butene, pentene, hexene, cyclopentene, cyclohexene, etc.
• the reaction may be carried out at 20° C. to 220° C., preferably at 90° C. to 180° C., when mono-substituted or 1,2-disubstituted alkenes are utilized as alkylating reagents, and 40° C. to 90° C.
• alkylating reagents when 1,1-disubstituted, tri-substituted, tetra-substituted or aryl-substituted alkenes are utilized as alkylating reagents.
• the alkylation reaction may be carried out neat (without solvent) or in inert solvents such as nitromethane, methylene chloride, dichloroethane, chlorobenzene, dichlorobenzene, nitrobenzene or a combination of these solvents.
• solvents such as benzene, toluene, and xylene may also be used, but the solvents may become alkylated.
• the reaction may be carried out in an autoclave or by feeding the alkene at atmosphere pressure.
• the reaction may be carried out in an autoclave when the boiling point of the solvent(s) is lower than the reaction temperature.
• alkene over binaphthol gives double alkylated 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol, while about two equivalents or less of alkene (relative to 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol) gives both mono and double alkylated 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthols.
• the second process aspect of the present invention is a process for making alkylated 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol by the reaction of 5,5′, 6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol with benzyl halide or tertiary alkyl halide in the presence of a Lewis acid catalyst.
• Suitable catalysts include the following: aluminum chloride, zinc chloride, boron trichloride, SnCl 4 , SbCl 5 , and ZrCl 4 .
• Zinc chloride is preferred.
• Suitable halides are bromides and chlorides.
• the reaction may be carried out at 0° C. to 100° C., preferably at 20° C. to 80° C.
• the alkylation reaction may be carried out in inert solvents such as nitromethane, methylene chloride, dichloroethane, chlorobenzene, dichlorobenzene, nitrobenzene or a combination of these solvents.
• solvents such as benzene, toluene, and xylene may also be used, but the solvents may become alkylated.
• tertiary alkyl halide When tertiary alkyl halide is used as an alkylating reagent, the reaction is very selective towards mono-alkylated 5,5′, 6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol even when several equivalents excess of tertiary alkyl halide are used.
• double alkylated 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol eventually is formed when a large excess of tertiary alkyl halide is used and the reaction is allowed to run at higher temperature and for longer time.
• double benzylated 5,5′,6,6′,7,7′, 8,8′-octahydro-2,2′-binaphthol is formed when a large excess of benzyl halide relative to binaphthol is used, while one equivalent of the benzyl halide (relative to 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol) gives predominantly mono-benzylated 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthols.
• the third process aspect of the present invention is a process for making alkylated 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol by the reaction of 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol with alkyl sulfonates such as alkyl methanesulfonates, alkyl triflates, alkyl p-toluenesulfonates, and alkyl benzenesulfonates in the presence of an acid catalyst.
• alkyl sulfonates such as alkyl methanesulfonates, alkyl triflates, alkyl p-toluenesulfonates, and alkyl benzenesulfonates in the presence of an acid catalyst.
• Suitable alkyl sulfonates are of the formula A-SO 3 —B, wherein A is C 1 to C 8 alkyl, C 1 to C 8 fluorinated alkyl, C 6 to C 10 aryl, or C 6 to C 10 fluorinated aryl; and B is C 1 to C 20 alkyl.
• Suitable catalysts for alkylation of 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol with alkyl sulfonates include Lewis acids such as aluminum chloride and boron trifluoride, as well as other acid catalysts such trifluoromethanesulfonic acid, tosylic acid, and rare earth metal triflates such as scandium trifluoromethanesulfonate, ytterbium trifluoromethanesulfonate, or lanthanum trifluoromethanesulfonate. Trifluoromethanesulfonic acid and scandium trifluoromethanesulfonate are the preferred catalysts.
• Alkylation of 5,5′,6,6′,7,7′, 8,8′-octahydro-2,2′-binaphthol may be carried out at 20° C. to 220° C., preferably at 90° C. to 180° C.
• the alkylation reaction may be carried out in inert solvents such as nitromethane, methylene chloride, carbon tetrachloride, dichloroethane, chlorobenzene, dichlorobenzene, nitrobenzene or a combination of these solvents.
• solvents such as benzene, toluene, and xylene may also be used, but the solvents may become alkylated.
• alkyl sulfonate double alkylated 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol, while about 1.5 equivalents or less of alkyl sulfonate (relative to 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol) gives predominately mono alkylated 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthols.
• the fourth process aspect of the present invention is a process for making alkylated 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol by the reaction of 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol with benzyl alcohol, secondary and tertiary alcohols containing 3 to 20 carbon atoms, in the presence of an acid catalyst.
• Suitable catalysts include the following: trifluoromethanesulfonic acid, tosylic acid, aluminum chloride, phosphotungstic acid, silicotungstic acid, phosphomolybdic acid, polymeric perfluorinated sulfonic acid (such as Nafion®) and polymeric sulfonic acid (such as Amberlyst®15 ion-exchange resin and Dowex 32®). Trifluoromethanesulfonic acid is preferred. Alkylation of 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol with alcohols may be carried out at 20° C. to 220° C., preferably at 90° C. to 180° C.
• the alkylation reaction may be carried out in inert solvents such as nitromethane, methylene chloride, carbon tetrachloride, dichloroethane, chlorobenzene, dichlorobenzene, nitrobenzene or a combination of these solvents.
• solvents such as benzene, toluene, and xylene may also be used, but the solvents may become alkylated.
• the product of the reaction of 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol with alcohol varies depending on stoichometry and alkylation reagent used.
• tertiary alcohol When tertiary alcohol is used as the alkylating agent, mono alkylated 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthols were obtained predominantly, even when several equivalents excess of tertiary alcohol was applied. A large excess of the secondary alcohol (relative to 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol) gave rise to both mono and double alkylated products.
• Catalysts used in the processes of the present invention may be unsupported or supported. Suitable supports include silicon dioxide, zeolites, alumino silicates, and polystyrene.
• the compounds which are produced by the process of the present invention can be used as reactants to make phosphorous-containing ligands that are useful to make catalysts that, in turn, are useful in both hydrocyanation and hydroformylation reactions. Bidentate phosphite ligands are particularly useful.
• Bidentate phosphite ligands can be prepared as described in U.S. Pat. No. 5,235,113 by contacting phosphorochloridites with the compounds made by the processes of the present invention. More recent U.S. Pat. Nos. 6,031,120 and 6,069,267, incorporated herein by reference, describe selective synthesis of bidentate phosphite ligands in which a phosphorochloridite is prepared in-situ from phosphorus trichloride and a phenol such as o-cresol and then treated in the same reaction vessel with an aromatic diol to give the bidentate phosphite ligand.
• the alkylated products of the processes of the present invention can be substituted for the aromatic diol in the above process.
• the compounds made by the processes of the present invention can be used to make polymeric ligands by a process which comprises (1) reacting the compounds made by the processes of the present invention with a benzyl chloride containing polymer, in the presence of a Lewis acid catalyst, and (2) reacting the product of step (1) with at least one phosphorochloridite compound in the presence of an organic base.
• a Lewis acid catalyst is zinc chloride or aluminum chloride
• the organic base is a trialkylamine.
• Two particularly important industrial catalytic reactions using phosphorus-containing ligands are olefin hydrocyanation and isomerization of branched nitrites to linear nitrites.
• Phosphite ligands are particularly useful for both reactions.
• the hydrocyanation of unactivated and activated ethylenically unsaturated compounds (olefins) using transition metal complexes with monodentate and bidentate phosphite ligands is well known.
• Bidentate phosphinite and phosphonite ligands are useful as part of a catalyst system for the hydrocyanation of ethylenically unsaturated compounds.
• Bidentate phosphinite ligands are also useful as part of a catalyst system for the hydrocyanation of aromatic vinyl compounds.
• Hydroformylation is another industrially useful process that utilizes catalysts made from phosphorus-containing ligands.
• catalysts made from phosphorus-containing ligands are known for this purpose.
• phosphine ligands including diphosphines
• catalysts made from phosphite ligands is also known.
• Such catalysts usually contain a Group VIII metal. See for example, U.S. Pat. No. 5,235,113, the disclosure of which is incorporated herein by reference.
• the present invention also relates to compounds of the formula
• R is H
• R′ is ethyl, C 3 to C 6 secondary, tertiary, or cyclic alkyl
• R and R′ are the same and are selected from the group consisting of
• Preferred compounds are those wherein R and R′ are the same are selected from the group consisting of ethyl, isopropyl, cyclopentyl, and cyclohexyl.
• the mixture was purified by flash column to give 14.5 g of 3-isopropyl-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol, mp 110° C.; 3.7 g of 3,3′-diisopropyl-5,5′,6,6′,7,7′8,8′-octahydro-2,2′-binaphthol, mp 152-3° C.; and a mixture (15 g) containing 38% of 3-isopropyl-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol and 33% of 3,3′-diisopropyl-5,5′, 6,6′,7,7′8,8′-octahydro-2,2′-binaphthol.
• GC showed 86% conversion, and 76% selectivity to 3-isopropyl-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol.
• the mixture was diluted with ether (20 ml) and 10% HCl (20 ml). The layers were separated, and the aqueous layer was extracted with ether (3 ⁇ 20 ml). The ether layers were combined, dried (MgSO 4 ), and concentrated.
• the crude product was purified by column chromatography (SiO 2 , 2% ethyl acetate/hexanes) to yield 1.1 g white solid (48%). MP: 100-102° C.

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