Abstract
Addition of 1, 1-di-, 1, 4-di-, and 1, 1, 4-trisubstituted thiosemicarbazides to acetylenedicarboxylic acid and its dimethyl ester affords 2-hydrazono-4-oxo-1, 3-thiazolidine-δ5,α-acetic acids, while 4-monosubstituted thiosemicarbazides give 2-imino-3-amino-1, 3-thiazolidin-4-ones.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 120–125, January, 1990.
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Kauss, V.Y., Liepin'sh, É.É., Kalvin'sh, I.Y. et al. Structure of products of addition of thiosemicarbazides and thiosemicarbazones to acetylenedicarboxylic acid and its dimethyl ester. Chem Heterocycl Compd 26, 103–107 (1990). https://doi.org/10.1007/BF00506859
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DOI: https://doi.org/10.1007/BF00506859