An Efficient One-Pot Synthesis of Benzo[4,5]imidazo[1,2-a]quinoxalines via Copper-Catalyzed Process

A copper-catalyzed one-pot process for the construction of benzo[4,5]imidazo[1,2-a]quinoxalines under air is described. Aryl chlorides, aryl bromides, and aryl iodides can be applied to the synthesis of these compounds.