Abstract
5-Phenyl-1H-pyrrole-2,3-diones reacted with malononitrile and 1H-pyrazole-5(4H)-ones to give substituted 6-amino-5-cyano-2′-oxo-5′-phenyl-1′,2′-dihydro-1H-spiro[pyrano[2,3-c]pyrazole-4,3′-pyrroles]. The crystal and molecular structures of ethyl 6-amino-1,1′-dibenzyl-5-cyano-3-methyl-2′-oxo-5′-phenyl-1′,2′-dihydro-1H-spiro[pyrano[2,3-c]pyrazole-4,3′-pyrrole]-4′-carboxylate were determined by X-ray analysis.
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Original Russian Text © M.V. Dmitriev, P.S. Silaichev, T.V. Sal’nikova, P.V. Melyukhin, A.N. Maslivets, 2015, published in Zhurnal Organicheskoi Khimii, 2015, Vol. 51, No. 6, pp. 900–903.
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Dmitriev, M.V., Silaichev, P.S., Sal’nikova, T.V. et al. Three-component spiro heterocyclization of 1H-pyrrole-2,3-diones with malononitrile and pyrazolones. Crystal and molecular structure of a spiro[pyrano[2,3-c]-pyrazole-4,3′-pyrrole]. Russ J Org Chem 51, 884–887 (2015). https://doi.org/10.1134/S1070428015060111
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DOI: https://doi.org/10.1134/S1070428015060111