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Abstract
An expedient regioselective synthesis of dispiroindenoquinoxaline pyrrolidine derivatives mediated by TiO2 in a one-pot, four-component 1,3-dipolar cycloaddition reaction is described.
ACKNOWLEDGMENTS
A. R. S. thanks the Council of Scientific and Industrial Research (CSIR), New Delhi, for the award of a senior research fellowship. R. R. thanks Department of Science and Technology (DST) and DST-Fund for Improvement S-T (FIST) for financial assistance.