EncapsulatedMn and PbNano Particles in DealuminatedNaYZeolite as a Reusable Catalyst for One-Pot Three-component Synthesis of Spiro Oxindol4H-Chromene Derivatives

EncapsulatedMn andPb complexes nanoparticles in the supercages of dealuminatedNaYzeolite was usedas an efficient and reusable catalyst for synthesis of biologically active spiro[chromene-4,3´-oxindole[via threecomponentreaction of isatins, dimedone, andcyclic 1,3-diketones

Keywords:

DealuminatedNaY zeolite , Three-component reactions , 4H-chromene , Nano particles