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P. M.  Chincholkar, Puranik, V. G., and Deshmukh, A. Rakeeb A., ?Efficient synthesis of azetidine-2,3-diones from L-(+)-diethyl tartrate?, Synlett, no. 14, pp. 2242-2246, 2007.\par \par S. P.  Chavan and Lasonkar, P. B., ?Simple synthesis of the novel antihistaminic drug olopatadine hydrochloride?, Synthesis-Stuttgart, vol. 45, no. 24, pp. 3399-3403, 2013.\par \par S. Reddy Yetra, Mondal, S., Mukherjee, S., Gonnade, R. G., and Biju, A. T., ?Enantioselective synthesis of spirocyclohexadienones by NHC-catalyzed formal [3+3] annulation reaction of enals?, Angewandte Chemie-International Edition, vol. 55, no. 1, pp. 268-272, 2016.\par \par B. M.  Sharma, Yadav, M., Gonnade, R. G., and Kumar, P., ?Unified approach to fused and spirocyclic oxindoles through lewis-acid-promoted opening of spiroepoxyoxindoles with allylsilanes: application to the formal synthesis of (+/-)-physovenine?, European Journal of Organic Chemistry, no. 18, pp. 2603-2609, 2017.\par \par S.  Singh, Singh, A., Pandya, R., Vanka, K., and Singh, R. P., ?Unlocking thermodynamic enolate for kinetically controlled desymmetrizing vinylogous (4+1) carbospiroannulation?, Chemistry-A European Journal, vol. 31, no. 27, 2025.\par \par }