M Ghorbani - Department of Chemistry, Hakim Sabzevari University, Sabzevar, ۹۶۱۷۹-۷۶۴۸۷, Iran
F Hojatee - Department of Chemistry, Hakim Sabzevari University, Sabzevar, ۹۶۱۷۹-۷۶۴۸۷, Iran
M Moosavifar - Department of Chemistry, Catalysis Division, University of Isfahan, Isfahan ۸۱۷۴۶-۷۳۴۴۱, Iran

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

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