Preparation of insecticidal optically active isovalerate esters

The method is for preparing an isomer of an alpha -cyano-3-phenoxybenzyl-2-(4-chlorphenyl)isovalerate or of the derivative having 4-fluoro on the phenoxy nucleus; these compounds have two asymmetric carbon atoms. … The starting material is a solution which consists of or is rich in a racemic mixture...

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Bibliographische Detailangaben
Hauptverfasser: HAYASHI, MASAHIRO, TAKUMA, KENZI, SUZUKI, YUKIO
Format: Patent
Sprache:eng ; fre ; ger
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