METHOD FOR THE PRODUCTION OF TELMISARTAN

摘要

The invention relates to a novel method for the production of telmisartan by reacting 2-n-propyl-4-methyl-6- (1'-methylbenzimidazol-2'-yl)-benzimidazol with a compound of general formula (IV), in which Z is a leaving group, wherein the compound 2-cyano-4'-[2''-n-propyl-4''-methyl-6'' -(1'''-methylbenzimidazol-2'''-yl) benzimidazol-1''-ylmethyl]biphenyl is obtained, and subsequently conducting hydrolysis of the nitrile to acid function.