Direct synthesis of 2-substituted benzimidazoles <i>via</i> dehydrogenative coupling of aromatic-diamine and primary alcohol catalyzed by a Co complex

Abstract

A Co(<sc>ii</sc>) complex was synthesized and used as catalyst to synthesize a series of 2-substituted benzimidazoles with <italic>o</italic>-phenylenediamines and primary alcohol as the substrates under mild reaction conditions.