PROCEDURE FOR THE OBTAINING OF STEREOISOMERS OF 2,2-DIMETHYL-3- (2,2-DICHLORO-VINYL) -CYCLOPROPAN-1-CARBOXYLATE OF A-CIANO-3-FENOXI-4-FLUORBENCILO, OF INSECTICIDE EFFECT AND ACA-RICIDA

摘要

An arthropodicidally active substantially pure stereoisomer of 2,2-dimethyl-3-(2,2-dichlorovinyl)-cyclopropane-1-carboxylic acid alpha -cyano-3-phenoxy-4-fluoro-benzyl ester of the formula IMAGE selected from the group consisting of ester in which the asymmetric C atoms , , and alpha have the following configuration: -Absolute configuration at the center -Isomer 1 3 alpha -a R R R -b R R S -c R S R -d R S S -e S S S -f S S R -g S R S -h S R R, - and diastereomeric mixtures of (1R)-cis- and (1R)-trans-2,2-dimethyl-3-(2,2-dichlorovinyl)-cyclopropane-1-carboxylic acid (R,S)- alpha -cyano-3-phenoxy-4-fluoro-benzyl esters of the formula IMAGE IMAGE