A mild and efficient protocol for synthesis of quinoline derivatives in aqueousmedium under neutral conditions is described. The reaction proceeded smoothly in H2O catalyzed by supramolecular catalyst β‐CD. By this protocol, various quinoline derivatives were synthesized in excellent yields.
An efficient protocol was developed for the recyclable nano CuO powder catalyzed synthesis of quinoline derivatives from acetylenedicarboxylates and 2-aminocarbonyl compounds using acetonitrile as solvent at 40 °C in air. A variety of quinoline derivatives were synthesized in good yields with good chemoselectivity in the presence of a catalytic amount of CuO nano powder under ligand/additive free conditions. The catalyst is air-stable, inexpensive and recyclable up to four cycles.