ENVIRONMENT-FRIENDLY FACTORY PROCESS FOR PRODUCING CARBENDAZIM AND BENOMYL

摘要

Substituted carbomethoxy- benzimine-azole derivs (1) are produced in aq. solns. of cynamide and equiv. alkaline or alkaline hydroxide or of alkaline or alkaline earth metal salts of cyannamide at pH 6-10, and chloroformic ac. alkyl esters. Thus obtained alkoxy-carbony- - cyanamide (11) or carbalkoxy cyanamide is reached with 0-phenylene diamine (111) or substituted phenylene diamines in aq. medium at pH 2-5.