METHOD FOR THE PURIFICATION OF PYRETHROID INTERMEDIATE COMPOUNDS BY SELECTIVE PARTIAL SAPONIFICATION

摘要

Saponifiable impurities are removed from pyrethroid intermediates represented by the structure IMAGE wherein R represents an alkyl radical having from 1 to about 30 carbon atoms and wherein X1 and X2 each represent a halogen by selectively saponifying said impurities by reaction with an aqueous base.