Abstract
Synthesis of a series of spirooxindolonitro pyrrolizidines and spiroindanonitro pyrrolizidines has been accomplished. The nonstabilized azomethine ylides generated from isatin and ninhydrin with proline reacted with nitro styrenes to regioselectively yield spirocycloadducts.
Acknowledgments
Poornachandran thanks the Council of Scientific and Industrial Research (CSIR), New Delhi, India, for the award of a senior research fellowship (SRF). Financial support from the Department of Science and Technology (DST), New Delhi Fist Facility and DST‐FIST, Department of Science and Technology, New Delhi, India, is also gratefully acknowledged.