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Sumitomo Chemical Co Ltd
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Sumitomo Chemical Co Ltd
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Application filed by Sumitomo Chemical Co LtdfiledCriticalSumitomo Chemical Co Ltd
Priority to JP8994181ApriorityCriticalpatent/JPS57206648A/en
Publication of JPS57206648ApublicationCriticalpatent/JPS57206648A/en
PURPOSE: To obtain a steric isomer of a phenylacetic acid ester derivative having higher insecticidal activity than the mother liquid used as the raw material, in a short time, by removing one optical isomer and its enantiomer from the mixture of steric isomers of a phenylacetic acid ester derivative in the form of crystal.
CONSTITUTION: The objective material rich in enantiomorphic pair consisting of (S)-α-cyano-3-(4-fluorophenoxy)benzyl (S)-2-(4-chlorophenyl)isolvalerate and its enantiomer can be prepared by removing the enantiomorphic pair consisting of (R)-α-cyano-3-(4-fluorophenoxy)benzyl (S)-2-(4-chlorophenyl)isovalerate and its enantiomer as crystals from α-cyano-3-(4-fluorophenoxy) benzyl 2-(4-chlorophenyl) isovalerate using a solvent such as alcohol, aliphatic hydrocarbon, alicyclic hydrocarbon, etc.
COPYRIGHT: (C)1982,JPO&Japio
JP8994181A1981-06-101981-06-10Preparation of mixture of steric isomers of phenylacetic acid ester derivative having higher activity
PendingJPS57206648A
(en)
New fluorine derivatives of 3-ethenyl-2,2-dimethyl cyclopropane carboxylic acid, their preparation process, their use as pesticides and the compositions containing them
M-PHENOXYBENZYL ESTERS OF ACIDS (DIFLUORO-2,2-BENZODIOXOLE-1,3) -5- ALPHA-ALKYLACETICS USEFUL AS INSECTICIDES AND ACARICIDES AND PROCESS FOR THEIR PREPARATION
Isomers of 3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropane-carboxylic-acid-alpha-methyl-(6-phenoxy-2-picolyl) ester, process for their preparation and their use as pesticides
Optically active naphthalene derivative, process for preparation thereof, liquid crystal composition containing the same as effective component, and liquid crystal element using the same