Metal‐Free Synthesis of the Functionalized Quinoxalines via α ‐Aminocarbonyl Compounds with o ‐Phenylenediamine

Abstract An expeditious one‐pot, metal‐free multicomponent synthesis of quinoxalines has been developed, from easily available starting materials as α ‐aminocarbonyl compounds and o ‐phenylenediamine instead of complex catalyst systems. The reaction has a broad substrate scope and displays excellent functional‐group tolerance. This method could be easily applied to many fields.