ZnO Nanoparticles Catalyzed Efficient One-Pot Three-Component Synthesis of 2,3-Disubstituted Quinalolin-4(1H)-ones under Solvent-Free Conditions

ZnO nanoparticles were prepared and applied as a favorable catalyst in three-component one-pot cyclocondensation reaction of isatoic anhydride with amines and aldehydes to afford the corresponding 2,3-disubstituted quinalolin-4(1H)-ones in good yields. Reactions occurred under solvent-free conditions in high atom economy.