Simple and efficient syntheses of novel benzo[4,5]imidazo[1,2-a]pyridine derivatives

Abstract

A novel series of benzo[4,5]imidazo[1,2-a]pyridine derivatives is synthesized through the reaction of 2-(1H-benzo[d]imidazol-2-yl)acetonitrile and different ethyl 2,4-dioxo-4-arylbutanoate derivatives in the presence of piperidine in refluxing EtOH. All the products are easily prepared within 25–45min in good to excellent yields.