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

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. An expeditious one‐pot, metal‐free multicomponent synthesis of quinoxalines has been developed, from easily available starting materials as a‐Aminocarbonyl compounds and o‐phenylenediamine instead of complex catalyst systems. The reaction has a broad substrate scope and exhibits excellent functional‐group tolerance. [ABSTRACT FROM AUTHOR]