Copper(II) Catalyzed Expeditious Synthesis of Furoquinoxalines through a One-Pot Three-Component Coupling Strategy

Microwave assisted one-pot transformation has been developed for the synthesis of biologically significant polysubstituted furoquinoxalines in good to excellent yields through a copper­(II) catalyzed three-component coupling of o-phenylene­diamine, ethyl­glyoxalate, and terminal alkyne, known as A3-coupling, followed by 5-endo-dig cyclization.