JPS5770852A - Preparation of optical active alpha-cyano-3-phenyl-benzyl-2-(4-chlorophenyl) isovalerate - Google Patents

Preparation of optical active alpha-cyano-3-phenyl-benzyl-2-(4-chlorophenyl) isovalerate

Info

Publication number
JPS5770852A
JPS5770852A JP14726580A JP14726580A JPS5770852A JP S5770852 A JPS5770852 A JP S5770852A JP 14726580 A JP14726580 A JP 14726580A JP 14726580 A JP14726580 A JP 14726580A JP S5770852 A JPS5770852 A JP S5770852A
Authority
JP
Japan
Prior art keywords
phenvalerate
isovalerate
cyano
chlorophenyl
phenyl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP14726580A
Other languages
Japanese (ja)
Inventor
Yukio Suzuki
Masahiro Hayashi
Kenji Taguma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP14726580A priority Critical patent/JPS5770852A/en
Priority to US06/313,089 priority patent/US4422978A/en
Priority to DE8181304922T priority patent/DE3167334D1/en
Priority to EP81304922A priority patent/EP0050521B1/en
Publication of JPS5770852A publication Critical patent/JPS5770852A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the titled compound having strong insecticidal activity advantageously with respect to industrial production and economical aspect, by crystallizing phenvalerate Aα from a solution of phenvalerate A in the presence of substantially pure crystal of phenvalerate Aα.
CONSTITUTION: When crystal of phenvalerate Aα[(S)-α-cyano-3-phenoxybenzyl (S)-2-(4-chlorophenyl)isovalerate]is crystallized from a solution of phenvalerate A[α-cyano-3-phenoxybenzyl(S)-2-(4-chloro-phenyl)isovalerate] in the presence or absence of a basic reagent(e.g., NH3), first the solution of phenvalerate A is heated at ≥40°C, phenvalerate Aα recrystallized from a solvent (e.g., alcohol type) is used as seed crystal, phenvalerate Aα is crystallized in the solvent (e.g., alcohol type), and the crystal together with phenvalerate A in the mother liquor is recovered, to give phenvalerate A rich in phenvalerate Aα.
COPYRIGHT: (C)1982,JPO&Japio
JP14726580A 1980-10-20 1980-10-20 Preparation of optical active alpha-cyano-3-phenyl-benzyl-2-(4-chlorophenyl) isovalerate Pending JPS5770852A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP14726580A JPS5770852A (en) 1980-10-20 1980-10-20 Preparation of optical active alpha-cyano-3-phenyl-benzyl-2-(4-chlorophenyl) isovalerate
US06/313,089 US4422978A (en) 1980-10-20 1981-10-20 Method for preparing optically active carboxylic acid esters
DE8181304922T DE3167334D1 (en) 1980-10-20 1981-10-20 Preparation of insecticidal optically active isovalerate esters
EP81304922A EP0050521B1 (en) 1980-10-20 1981-10-20 Preparation of insecticidal optically active isovalerate esters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14726580A JPS5770852A (en) 1980-10-20 1980-10-20 Preparation of optical active alpha-cyano-3-phenyl-benzyl-2-(4-chlorophenyl) isovalerate

Publications (1)

Publication Number Publication Date
JPS5770852A true JPS5770852A (en) 1982-05-01

Family

ID=15426311

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14726580A Pending JPS5770852A (en) 1980-10-20 1980-10-20 Preparation of optical active alpha-cyano-3-phenyl-benzyl-2-(4-chlorophenyl) isovalerate

Country Status (1)

Country Link
JP (1) JPS5770852A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54103832A (en) * 1978-12-26 1979-08-15 Sumitomo Chem Co Ltd Higher active alpha-cyano-3-penoxybenzyl 2-(4-chlorophenyl)-isovelerate and insecticide containing the same as effective component
JPS55104250A (en) * 1979-02-05 1980-08-09 Sumitomo Chem Co Ltd Optically active alpha-cyano-3-phenoxybenzyl 2-(4-tert- butylphenyl)isovalerate, its preparation, and insecticide and acaricide comprising it

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54103832A (en) * 1978-12-26 1979-08-15 Sumitomo Chem Co Ltd Higher active alpha-cyano-3-penoxybenzyl 2-(4-chlorophenyl)-isovelerate and insecticide containing the same as effective component
JPS55104250A (en) * 1979-02-05 1980-08-09 Sumitomo Chem Co Ltd Optically active alpha-cyano-3-phenoxybenzyl 2-(4-tert- butylphenyl)isovalerate, its preparation, and insecticide and acaricide comprising it

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