Abstract
Base-catalyzed nucleophilic addition of carbon nucleophiles to the exocyclic double bond of 2-(5-aryl-4-methyl-2-oxo-1,2-dihydro-3H-pyrrol-3-ylidene)malononitriles afforded spiro-fused pyrrole derivatives, 7-amino-3-aryl-4-methyl-1-oxo-8-oxa-2-azaspiro[4.5]deca-3,6,9-triene-6-carbonitriles. The products can be regarded as rare structural analogs of biologically active spirans based on isatin.
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Original Russian Text © A.G. Milovidova, M.Yu. Belikov, M.Yu. Ievlev, O.V. Ershov, O.E. Nasakin, 2018, published in Zhurnal Organicheskoi Khimii, 2018, Vol. 54, No. 12, pp. 1776–1779.
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Milovidova, A.G., Belikov, M.Y., Ievlev, M.Y. et al. Reaction of 2-(2-Oxo-1,2-dihydro-3H-pyrrol-3-ylidene)- malononitriles with C-Nucleophiles. Synthesis of New Spiro-Fused Pyrrole Derivatives. Russ J Org Chem 54, 1790–1793 (2018). https://doi.org/10.1134/S1070428018120084
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DOI: https://doi.org/10.1134/S1070428018120084