A facile synthesis of indanone-fused spirooxindoles is disclosed by directing the reactivity of η3-oxoallyl Pd-intermediate toward 5-exo-trig mode of cyclization. The Pd-catalyzed reaction of the rationallydesigned starting material 3-arylidene oxindoles with isatin-derived tosylhydrazone afforded the spirooxindoles having all-carbon quaternary center through carbene migratory insertion followed by
An efficient diastereoselective synthesis of α-tetralone-fused spirooxindoles is reported. The Pd-catalyzed domino reaction proceeds through a carbene migratoryinsertion followed by a 6-endo-trig mode of conjugate addition sequence from easily accessible isatin-derived N-tosylhydrazones and 2′-iodochalcones. The versatility of the protocol has been showcased by high functional group tolerance, broad