Abstract
2-Hydrazino-3-aminopyridine reacts with carbon disulfide in an alkaline medium to give 1H-3-aminoimidazo[4,5-b]pyridine-2-thione and in a neutral medium to give 8-amino-3-thio-sym-triazolino[4,3-a]pyridine. The reaction of 2-α-methylhydrazino-3-aminopyridine with carbon disulfide leads to anhydro-1-methyl-3-mercapto-8-amino-sym-triazolo[4,3-a]pyridinium betaine.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 411–413, March, 1977.
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Mokrushina, G.A., Postovskii, I.Y. & Kotovskaya, S.K. Syntheses of bisheterocycles from 2-hydrazino-3-aminopyridine. Chem Heterocycl Compd 13, 334–336 (1977). https://doi.org/10.1007/BF00470323
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DOI: https://doi.org/10.1007/BF00470323