Abstract
A number of 3,4-diaminocoumarins was obtained by hydrogenation of 3-nitro-4-aminocoumarins. It was established that these compounds exist in the coumarin form, and monoacetylation of the 3-NH2 group does not shift the tautomeric equilibrium.
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See [1] for a previous communication.
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 316–320, March, 1976.
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Savel'ev, V.L., Artamonova, O.S. & Zagorevskii, V.A. 3,4-Diaminocoumarins. Chem Heterocycl Compd 12, 268–272 (1976). https://doi.org/10.1007/BF00479561
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DOI: https://doi.org/10.1007/BF00479561