Abstract
In the reaction of 1-ethoxycarbonyl-2-methylthio-1,4,5,6-tetrahydropyrimidine with thiosemicarbazide, 2-aminothiocarbonyl-3-oxo-2,3,5,6,7,8-hexahydro-sym-triazolo[4,3-a]pyrimidine is formed, which as a result of the successive action of methyl iodide, K2CO3 solution, and cyclic amines, converts into 2,3,5,6,7,8-hexahydro-8-oxo-sym-triazolo[4,3-a]pyrimidine.
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For Communication 3, see [1]
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1540–1542, November, 1987.
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Krężel, I. sym-Triazolo[4,3-a][1,3]diazacycloalkanes. 4. Synthesis and transformations of 2-aminothiocarbonyl-sym-triazolo[4,3-a]pyrimidine. Chem Heterocycl Compd 23, 1233–1235 (1987). https://doi.org/10.1007/BF00479377
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DOI: https://doi.org/10.1007/BF00479377