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Alternative Routes to the Pyrazolo[4,3-e][1,2,4]triazolo-[1,5-c]pyrimidine System

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Abstract

Formimidic acid esters derived from 1-substituted 5-aminopyrazole-4-carbonitriles reacted with carboxylic acid hydrazides on heating to give 2,7-disubstituted pyrazolo[4,3-e][1,2,4]triazolo[1,5-c]pyrimidine derivatives as a result of double heterocyclization. The same compounds were obtained by thermal recyclization of 1-aroyl-2-(1-R-pyrazolo[3,4-d]pyrimidin-4-yl)hydrazines.

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Authors and Affiliations

  1. Institute of Physical and Organic Chemistry, Rostov State University, pr. Stachki 194/2, Rostov-on-Don, 344090, Russia

    R. V. Tyurin, E. V. Vorob’ev, L. G. Minyaeva, V. V. Krasnikov & V. V. Mezheritskii

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  1. R. V. Tyurin
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  2. E. V. Vorob’ev
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  3. L. G. Minyaeva
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  4. V. V. Krasnikov
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  5. V. V. Mezheritskii
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Translated from Zhurnal Organicheskoi Khimii, Vol. 41, No. 6, 2005, pp. 934–938.

Original Russian Text Copyright © 2005 by Tyurin, Vorob’ev, Minyaeva, Krasnikov, Mezheritskii.

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Tyurin, R.V., Vorob’ev, E.V., Minyaeva, L.G. et al. Alternative Routes to the Pyrazolo[4,3-e][1,2,4]triazolo-[1,5-c]pyrimidine System. Russ J Org Chem 41, 916–921 (2005). https://doi.org/10.1007/s11178-005-0266-z

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  • DOI: https://doi.org/10.1007/s11178-005-0266-z

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