Copper-Catalyzed Cascade Amination Route to N-Aryl Benzimidazoquinazolinones

An efficient one-pot Cu-catalyzed C-H functionalization/two-fold C-N bond formation protocol for the syntheses of N-aryl benzimidazoquinazolinones is being reported. This strategy involves a Cu-catalyzed C-N bond coupling reaction between N-anilinoquinazolinones and aryl/heteroaryl halides followed by acetate ligand-assisted intramolecular C-H amination.(1a) This reaction is high-yielding and straightforward for the synthesis of anti-cancer drug analogues of benzimidazoquinazolinones.