An efficient synthesis of Schiff bases containing benzimidazole moiety catalyzed by transition metal nitrates

摘要

A simple and efficient method has been developed for the synthesis of some novel Schiff bases via the reaction of aromatic aldehydes with 2-aminobenzimidazole by using catalytic amount of M(NO3)2 .xH2 O in an organic solvent at room temperature. Some advantages of this protocol are its very good yields, use of available catalysts, simple workup procedure, and short reaction times.