Abstract
A series of new oxygen-, nitrogen- and sulfur- containing spiro heterocycles was synthesized by reactions of 2-(3-hydroxy-5,5-dimethylcyclohex-2-enylidene)malononitrile with some active methylene and bidentate compounds.
GRAPHICAL ABSTRACT
ACKNOWLEDGMENTS
This work was supported by the University Grants Commission (UGC), New Delhi. The author P.M. is grateful to UGC, for a research fellowship. The authors thank Funding for Infrastructure in Science and Technology, Department of Science and Technology, for providing facilities and NISER, Bhubaneswar, for providing NMR spectral data.