Cu(I)-Catalyzed Synthesis of Imidazo[1,2-a]pyridines from Aminopyridines and Nitroolefins Using Air as the Oxidant

A copper-catalyzed method for the synthesis of imidazo­[1,2-a]­pyridines with aminopyridines and nitroolefins using air as oxidation agent in a one-pot procedure has been developed. In this process, the reaction appears to be very general and suitable for construction of a variety of imidazo­[1,2-a]­pyridines.