Process for separating pyethroid geometric isomers

摘要

PCT No. PCT/HU85/00072 Sec. 371 Date Sep. 26, 1986 Sec. 102(e) Date Sep. 26, 1986 PCT Filed Dec. 6, 1985 PCT Pub. No. WO86/03487 PCT Pub. Date Jun. 19, 1986.The invention relates to the separation of the geometrical isomers of cyclopropane carboxylic acids of formula (I) <IMAGE> (I) wherein R represents alkyl having 1 to 4 carbon atoms or halogen.