Abstract
Thermolysis of dimethyl esters of stereoisomeric phthalimidoaziridine-2,3-dicarboxylic acids in the presence of dimethyl fumarate, dimethyl maleate, and N-phenylmaleimide occurred stereo-specifically and stereoselectively led to the formation of derivatives of 1-phthalimidopyrrolidine, products of 1,3-dipolar additrion of intermediately arising azomethine ylides. In keeping with the rules of the conservation of orbital symmetry the thermal opening of the 2,3-disubstituted 1-phthalimidoaziridines into azomethine ylides occurred conrotatory. The relative positions of the substituents in the dipolarophiles is retained in the reaction products indicating the concerted addition mechanism.
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Original Russian Text © M.A. Kuznetsov, A.V. Ushkov, S.I. Selivanov, A.S. Pan’kova, A. Linden, 2009, published in Zhurnal Organicheskoi Khimii, 2009, Vol. 45, No. 8, pp. 1209–1216.
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Kuznetsov, M.A., Ushkov, A.V., Selivanov, S.I. et al. Thermolysis of dimethyl cis- and trans-1 pthalimidoaziridine-2,3-dicarboxylates in the presence of dipolarophiles. Russ J Org Chem 45, 1200–1207 (2009). https://doi.org/10.1134/S1070428009080144
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DOI: https://doi.org/10.1134/S1070428009080144