Dimethyl Sulfoxide Involved One-Pot Synthesis of Quinoxaline Derivatives

An efficient, green, and novel method for the synthesis of N-heterocycle-fused quinoxalines is repotted herein. Dimethyl sulfoxide was used as both a reactant and a solvent in this reaction. A wide range of products in moderate to excellent yields were obtained, including pyrrolo[1,2-a]quinoxalines, indolo[1,2-a]quinoxalines, 1H-pyrrolo[3,2-c]quinoliries, and benzo [4,5]imidazo [1,2-c] quinazolines.