Abstract
Reaction of 3-amino-8-hydroxy-1,6-dioxo-2,7-diazaspiro[4.4]non-3-en-4-carbonitriles with amines in 2-propanol at room temperature provided the corresponding ammonium salts of 3-amino-8-hydroxy-1,6-dioxo-4-cyano-2,7-diazaspiro[4.4]non-3-en-2-ides.
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Original Russian Text © S.V. Fedoseev, O.V. Ershov, M.Yu. Belikov, V.A. Tafeenko, 2016, published in Zhurnal Organicheskoi Khimii, 2016, Vol. 52, No. 8, pp. 1153–1156.
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Fedoseev, S.V., Ershov, O.V., Belikov, M.Y. et al. Synthesis of 3-amino-8-hydroxy-1,6-dioxo-4-cyano-2,7-diazaspiro[4.4]non-3-en-2-ides ammonium salts. Russ J Org Chem 52, 1143–1147 (2016). https://doi.org/10.1134/S107042801608008X
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DOI: https://doi.org/10.1134/S107042801608008X