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Reaction of 4-Aryl-1-(4-oxo-3,4-dihydrothieno-[2,3-d]pyrimidin-2-yl)thiosemicarbazides with Dimethyl Acetylenedicarboxylate

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Abstract

4-Aryl-1-(4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)thiosemicarbazides react with dimethyl acetylenedicarboxylate in methanol to give the corresponding methyl {3-aryl-4-oxo-2-[(4-oxo-3,4-dihydro-thieno[2,3-d]pyrimidin-2-yl)hydrazono]-1,3-thiazolidin-5-ylidene}acetates, whereas in dioxane methyl 5-aryl-amino-2-methoxycarbonylmethyl-3-(4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)-2,3-dihydro-1,3,4-thiadiazole-2-carboxylates are mainly formed.

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Authors
  1. R. I. Vas'kevich
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  2. Yu. L. Zborovskii
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  3. V. I. Staninets
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  4. A. N. Chernega
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Vas'kevich, R.I., Zborovskii, Y.L., Staninets, V.I. et al. Reaction of 4-Aryl-1-(4-oxo-3,4-dihydrothieno-[2,3-d]pyrimidin-2-yl)thiosemicarbazides with Dimethyl Acetylenedicarboxylate. Russian Journal of Organic Chemistry 40, 1047–1052 (2004). https://doi.org/10.1023/B:RUJO.0000045202.20807.f8

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  • DOI: https://doi.org/10.1023/B:RUJO.0000045202.20807.f8

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