One‐Pot Ullmann C–N Coupling Cyclization Toward Domino Synthesis of Fused Hexacyclic Quinolinotriazoloacridinones Catalyzed by CuI/L‐Proline

A one‐pot method for consecutive Konoevenagel condensation, Michael addition, cyclization, dehydrogenation, and Ullmann coupling of 2‐halogenated aromatic aldehyde, 1 H ‐benzo[ d ][1,2,3]triazol‐5‐amine, and cyclohexane‐1,3‐diones is presented. This procedure provided an efficient synthesis of fused hexacyclic quinolinotriazoloacridinone derivatives in good yields catalyzed by CuI/L‐proline.