(+) (-) - trans-3- (E, Z-2-chloro-2- (4-chlorophenyl) -vinyl) -2,2-dimethyl-cyclopropane carboxylic acid - (+) (-) - (alpha-cyano -3-phenoxy-4-fluorobenzyl) esters or (+) (-) - trans-3- (Z-2-chloro-2- (4-chlorophenyl) vinyl-2,2-dimethyl-cyclopropane carboxylic acid - (+) (-) - (alpha-cyano-3-phenoxy-4-fluorobenzyl) ester, a process for the preparation of these compounds, ectoparasitic agents containing the compounds and forth

摘要

Combating ectoparasites with the substantially pure isomer mixture (+/-)-trans-3-(E/Z-2-Chloro-2-(4-chlorophenyl)-vinyl)-2,2-dimethyl-cyc lopropanecarboxylic acid (+/-)-( alpha -cyano-3-phenoxy-4-fluoro-benzyl) ester or the individual E- and Z-isomers of the formula IMAGE The intermediate free acids, acid chlorides and esters thereof are also shown.