WO2006102387A1 - Improved process for preparing insecticidal (disubstitutedpropenyl) phenylalkyl substituted dihydrobenzofurans - Google Patents
Improved process for preparing insecticidal (disubstitutedpropenyl) phenylalkyl substituted dihydrobenzofurans Download PDFInfo
- Publication number
- WO2006102387A1 WO2006102387A1 PCT/US2006/010350 US2006010350W WO2006102387A1 WO 2006102387 A1 WO2006102387 A1 WO 2006102387A1 US 2006010350 W US2006010350 W US 2006010350W WO 2006102387 A1 WO2006102387 A1 WO 2006102387A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- formula
- compound
- disubstitutedpropenyl
- halogen
- substituted
- Prior art date
Links
- 0 C*Oc(c(*)c1)c(*)cc1OCc1ccccc1 Chemical compound C*Oc(c(*)c1)c(*)cc1OCc1ccccc1 0.000 description 3
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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P33/00—Antiparasitic agents
- A61P33/14—Ectoparasiticides, e.g. scabicides
-
- 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
- C07D307/82—Benzo [b] furans; Hydrogenated benzo [b] furans with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the hetero ring
Definitions
- This invention is in the field of chemical processes; more specifically, an improved process for preparing (disubstitutedpropenyl) phenylalkyl substituted dihydrobenzofurans.
- R 3 R , R 3 , R , R 5 and R 6 are independently selected from halogen or alkyl and x is 2, 3, 4, 5 or 6; are useful insecticides and have been described in U.S. Patent number 6,987,194, the disclosure of which is incorporated herein by reference. Disadvantages of processes to produce these compounds include less than optimal yields, less than optimal cycle times and high catalyst loadings.
- the present invention improves the process for preparing substituted phenolylalkyl substituted dihydrobenzofurans of formula I.
- overall yield, cycle times and catalyst loading are improved for the production of (disubstitutedpropenyl) phenylalkyl substituted dihydrobenzofurans.
- R 3 and R are selected from halogen
- R 5 and R are independently selected from halogen or alkyl; and x is 2, 3, 4, 5 or 6;
- R 5 and R 6 are as defined above;
- R 7 and R 8 are independently selected from halogen, hydroxyl or -OSO 2 R 9 wherein R 9 is alkyl or aryl; and x is 2, 3, 4, 5 or 6;
- R 5 R R and x are as defined above;
- R and R 4 are as defined above;
- the "about” range shall be not more than 10% of the absolute value of an end point or 10% of the range recited, whichever is less.
- alkyl As used in this specification and unless otherwise indicated the substituent terms "alkyl”, “alkoxy”, and “haloalkyl”, used alone or as part of a larger moiety, includes straight or branched chains of at least one or two carbon atoms, as appropriate to the substituent, and preferably up to 12 carbon atoms, more preferably up to ten carbon atoms, most preferably up to seven carbon atoms.
- Halogen “halide” or “halo” refers to fluorine, bromine, iodine, or chlorine.
- ambient temperature refers to a temperature in the range of about 20° C to about 30° C. Certain solvents, catalysts, and the like are known by their acronyms.
- DMAC N,N-dimethylacetarnide
- DMF N,N-dimethylformamide
- THF tetrahydrofuran
- glymes refers to a class of solvents comprised of monoglyme, diglyme, triglyme, tetraglyme, and polyglyme.
- the present invention relates to a process for preparing a substituted phenolylalkyl substituted dihydrobenzofuran of formula I:
- R and R are selected from halogen
- R 5 and R 6 are independently selected from halogen or alkyl; and x is 2, 3, 4, 5 or 6;
- R 7 and R 8 are independently selected from halogen, hydroxyl or -OSO 2 R 9 wherein R 9 is alkyl or aryl; and x is 2, 3, 4, 5 or 6;
- R 5 , R 6 R 8 and x are as defined above;
- R 3 and R 4 are as defined above;
- the reaction of step a) can be conducted in the presence of a catalyst; at elevated temperature.
- the catalyst can be polyethylene glycol, dimethylaminopyridine, triethylamine, pyridine, potassium iodide, phase transfer catalysts such as quaternary ammonium salts or quaternary phosphonium salts or mixtures thereof.
- the catalyst can be present in a concentration of from about 0.1% by weight to about 15% by weight.
- the elevated temperature can be in the range of 30°C to 120°C.
- the reaction of step b) can be conducted in the presence of a solvent; in the presence of a catalyst; at elevated temperature.
- the solvent can be tetrahydrofuran, toluene, xylene, 1 ,2-dichloroethane, triethylamine, />-dioxane, N 5 N- dimethylacetamide, N,N-dimethylformamide, glymes, methyl isobutyl ketone, dimethylsulfoxide or mixtures thereof.
- the catalyst can be polyethylene glycol, potassium iodide, dimethylaminopyridine, triethylamine, pyridine, phase transfer catalysts such as quaternary ammonium salts or quaternary phosphonium salts or mixtures thereof.
- the catalyst can be present in a concentration of from about 0.1% by weight to about 20% by weight.
- the elevated temperature can be in the range of 30°C to 70°C.
- Another embodiment of the present invention is a compound of formula II:
- R 5 and R 6 are independently selected from halogen or alkyl;
- R 8 is selected from halogen, hydroxyl or -OSO 2 R 9 wherein R 9 is alkyl or aryl; and
- x is 2, 3, 4, 5 or 6.
- the following example illustrates a process for preparing substituted phenolylalkyl substituted dihydrobenzofurans of formula I.
- R 5 and R 6 are alkyl wherein R 7 and R 8 are halogen ⁇
- step (b) of Example 1 2,6-dihalo-4-(phenylmethoxy)phenol, a compound of formula (C), was reacted with a l-(2,2-dialkyl(2,3-dihydrobenzo[2,3-b]furan-7- yloxy))-4-haloalkane, a compound of formula II, for example l-(2,2-dialkyl(2,3- dihydrobenzo[2,3-b]furan-7-yloxy))-4-halobutane, in the presence of abase, a solvent and a catalyst at elevated temperature to form a 2-[4-(2,2-dialkyl(2,3- dihydrobenzo[2,3-b]furan-7-yloxy))alkoxy]-l,3-dihalo-5-(phenylmethoxy)benzene, a compound of formula I, for example 2-[4-(2,2-dialkyl(2,3-dihydrobenzo[2,3- b]fur
Landscapes
- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Animal Behavior & Ethology (AREA)
- Medicinal Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Tropical Medicine & Parasitology (AREA)
- Pharmacology & Pharmacy (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Furan Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06739229A EP1863783A4 (en) | 2005-03-23 | 2006-03-22 | Improved process for preparing insecticidal (disubstitutedpropenyl) phenylalkyl substituted dihydrobenzofurans |
JP2008503120A JP2008534507A (en) | 2005-03-23 | 2006-03-22 | Improved process for preparing (disubstituted propenyl) phenylalkyl substituted dihydrobenzofurans having insecticidal activity |
IL186017A IL186017A0 (en) | 2005-03-23 | 2007-09-18 | Improved process for preparing insecticidal (disubtitutedpropenyl) phenylalkyl substituted dihydrobenzofurans |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US66442705P | 2005-03-23 | 2005-03-23 | |
US60/664,427 | 2005-03-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006102387A1 true WO2006102387A1 (en) | 2006-09-28 |
Family
ID=37024160
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2006/010350 WO2006102387A1 (en) | 2005-03-23 | 2006-03-22 | Improved process for preparing insecticidal (disubstitutedpropenyl) phenylalkyl substituted dihydrobenzofurans |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1863783A4 (en) |
JP (1) | JP2008534507A (en) |
CN (1) | CN101146788A (en) |
IL (1) | IL186017A0 (en) |
TW (1) | TW200716585A (en) |
WO (1) | WO2006102387A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1986000904A1 (en) * | 1984-07-18 | 1986-02-13 | Nitrokémia Ipartelepek | Etherified 2-hydroxy-ethyl-phosphonic acid derivatives and plant growth regulating agents containing same as active ingredient |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4960884A (en) * | 1989-03-02 | 1990-10-02 | Fmc Corporation | Pesticidal 2-fluoroethyl ethers |
JPH05125024A (en) * | 1991-11-05 | 1993-05-21 | Yamanouchi Pharmaceut Co Ltd | New aryloxyalkylamine derivative or its salt |
JP2003527305A (en) * | 1998-07-27 | 2003-09-16 | イーライ・リリー・アンド・カンパニー | Anxiety treatment |
CN1780818A (en) * | 2003-04-30 | 2006-05-31 | Fmc有限公司 | Derivados ciclicos fenil-substituidos |
BRPI0608084A2 (en) * | 2005-02-17 | 2009-11-10 | Bayer Cropscience Ag | improved process for preparing phenylalkyl-substituted dihydrobenzofurans (disubstituted propenyl) |
WO2006088963A1 (en) * | 2005-02-17 | 2006-08-24 | Bayer Cropscience Ag | Improved process for preparing (disubstitutedpropenyl) phenylalkyl substituted dihydrobenzofurans |
-
2006
- 2006-03-22 CN CNA2006800093207A patent/CN101146788A/en active Pending
- 2006-03-22 WO PCT/US2006/010350 patent/WO2006102387A1/en active Application Filing
- 2006-03-22 JP JP2008503120A patent/JP2008534507A/en not_active Withdrawn
- 2006-03-22 EP EP06739229A patent/EP1863783A4/en not_active Withdrawn
- 2006-03-23 TW TW095110096A patent/TW200716585A/en unknown
-
2007
- 2007-09-18 IL IL186017A patent/IL186017A0/en unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1986000904A1 (en) * | 1984-07-18 | 1986-02-13 | Nitrokémia Ipartelepek | Etherified 2-hydroxy-ethyl-phosphonic acid derivatives and plant growth regulating agents containing same as active ingredient |
Non-Patent Citations (2)
Title |
---|
DATABASE CA [online] 1986, BALINT S. ET AL.: "Etherified 2-hydroxyethylphosphonic acid derivatives and plant growth regulating agents containing them as active ingredient", XP003001987, Database accession no. (105:134144) * |
See also references of EP1863783A4 * |
Also Published As
Publication number | Publication date |
---|---|
CN101146788A (en) | 2008-03-19 |
EP1863783A4 (en) | 2008-06-18 |
IL186017A0 (en) | 2008-01-20 |
TW200716585A (en) | 2007-05-01 |
EP1863783A1 (en) | 2007-12-12 |
JP2008534507A (en) | 2008-08-28 |
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