PROCEDURE FOR OBTAINING (+) - TRANS-3- (E, Z-2-CHLORINE-2- (4-CHLORINE-PHENYL) -VINYL) -2,2-DIMETHYL-CYCLOPROPANCARBOXYLATE (+) - (-CIAN -3-PHENOXI-4-FLUOR-BENCILO), EFFECT-ECTOPA-RASITICIDE

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.