Visible-Light-Induced, 4CzIPN-Catalyzed Oxidative Coupling of Quinoxalin-2(1 H )-ones with Aromatic Amines

A protocol of photoinduced, 4CzIPN-catalyzed oxidative dehydrogenative coupling of quinoxalin-2(1 H )-ones with aromatic amines to prepare 3-aryl-aminoquinoxalin-2(1 H )-ones has been realized open to air. 3-Aryl-aminoquinoxalin-2(1 H )-one derivatives were comprehensively synthesized from aromatic amines using the photocatalytic method in this article, and the reactions proceeded in moderate-to-excellent yields. This protocol can be applied to the efficient synthesis of bioactive quinoxalinone derivatives in a single step. Mechanistic investigation indicated that a radical pathway existed in the formation of the products.