Synthesis of 3,4-diamino-1H-pyrazolo[3,4-<i>d</i>]pyrimidines

Abstract

The reaction of 4-(amino-substituted)-2-methylthio-6-chloropyrimidine-5-carbonitriles with hydrazine and methylhydrazine was used to synthesize 3, 4-diamino-6-methylthio-1H-pyrazolo[3, 4-d]pyrimidines. It was shown that the formation of pyrazolopyrimidines proceeds through intermediate 6-hydrazinopyrimidine-5-carbonitriles.

How to Cite
Tumkyavichyus, S. Chem. Heterocycl. Compd. 1996, 32, 716. [Khim. Geterotsikl. Soedin. 1996, 831.]

For this article in the English edition, see DOI https://doi.org/10.1007/BF01164873