JPS57169453A - Preparation of optically active carboxylic ester - Google Patents

Preparation of optically active carboxylic ester

Info

Publication number
JPS57169453A
JPS57169453A JP5611581A JP5611581A JPS57169453A JP S57169453 A JPS57169453 A JP S57169453A JP 5611581 A JP5611581 A JP 5611581A JP 5611581 A JP5611581 A JP 5611581A JP S57169453 A JPS57169453 A JP S57169453A
Authority
JP
Japan
Prior art keywords
crystal
carboxylic ester
acid
isomer
alcohol
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.)
Granted
Application number
JP5611581A
Other languages
Japanese (ja)
Other versions
JPS6360735B2 (en
Inventor
Masahiro Hayashi
Yukio Suzuki
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 JP5611581A priority Critical patent/JPS57169453A/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 JPS57169453A publication Critical patent/JPS57169453A/en
Publication of JPS6360735B2 publication Critical patent/JPS6360735B2/ja
Granted legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: To crystallize the isomer of the S-form on the acid and alcohol sides preferentially, by adding the pure crystal of the isomer in which the acid and alcohol sides are both S-form as a seed crystal to a supersaturated solution of a carboxylic ester in which the acid side is the S-form.
CONSTITUTION: A crystal of the isomer in which the acid and alcohol sides are both S-form[hereinafter abbreviated to (Aα)], is crystallized from a solution of a carboxylic ester, expressed by the formula (X is H or F; * is asymetric carbon atom), in which the acid side is the S-form[hereinafter abbreviated to (A)], in the presence or absence of a basic reagent, e.g. NH3 or triethylamine. In the process, a crystal of (Aα) obtained by the recrystallization from an alcoholic solvent, etc. as a seed crystal is added to a supersaturated solution of (A) prepared by heating the solution of (A) at 40°C or above, and the crystal of (Aα) is deposited with an alcoholic solvent, aliphatic hydrocarbon, etc. as a solvent. The amount of the solvent to be used is usually about 0.5W30 times that of (A).
COPYRIGHT: (C)1982,JPO&Japio
JP5611581A 1980-10-20 1981-04-13 Preparation of optically active carboxylic ester Granted JPS57169453A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP5611581A JPS57169453A (en) 1981-04-13 1981-04-13 Preparation of optically active carboxylic ester
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
JP5611581A JPS57169453A (en) 1981-04-13 1981-04-13 Preparation of optically active carboxylic ester

Publications (2)

Publication Number Publication Date
JPS57169453A true JPS57169453A (en) 1982-10-19
JPS6360735B2 JPS6360735B2 (en) 1988-11-25

Family

ID=13018070

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5611581A Granted JPS57169453A (en) 1980-10-20 1981-04-13 Preparation of optically active carboxylic ester

Country Status (1)

Country Link
JP (1) JPS57169453A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5416444A (en) * 1977-07-07 1979-02-07 Sumitomo Chem Co Ltd Optically active alpha-cyano-3-phenoxybenzyl 2-(4-chlorophenyl)-isovalerate and its preparation
JPS5455546A (en) * 1977-10-07 1979-05-02 Sumitomo Chem Co Ltd Preparation of optically active alpha-cyano-3-phenoxy-benzyl 2-(4-chlorophenyl)-isovalerate
JPS54109945A (en) * 1978-01-31 1979-08-29 Roussel Uclaf Insecticidal ester of photoactive substituted acetic acid and racemic or photoactive substituted benzylalcohol* its manufacture and insecticide composition containing it

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5416444A (en) * 1977-07-07 1979-02-07 Sumitomo Chem Co Ltd Optically active alpha-cyano-3-phenoxybenzyl 2-(4-chlorophenyl)-isovalerate and its preparation
JPS5455546A (en) * 1977-10-07 1979-05-02 Sumitomo Chem Co Ltd Preparation of optically active alpha-cyano-3-phenoxy-benzyl 2-(4-chlorophenyl)-isovalerate
JPS54109945A (en) * 1978-01-31 1979-08-29 Roussel Uclaf Insecticidal ester of photoactive substituted acetic acid and racemic or photoactive substituted benzylalcohol* its manufacture and insecticide composition containing it

Also Published As

Publication number Publication date
JPS6360735B2 (en) 1988-11-25

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