Heterogeneous bimetallic ZnFe2O4 nanopowder catalysed facile four component reaction for the synthesis of spiro[indoline-3,2′-quinoline] derivatives from isatins in water medium

Article abstract of DOI:10.1016/j.tetlet.2015.02.030

The bimetallic ZnFe₂O₄ nanopowder, a dual Lewis acid-base combined catalyst is found to efficiently catalyse a four component reaction for the synthesis of functionalized tetrahydrospiro[indoline-3,2′-quinoline] derivatives from aryl