Synthesis of arylamino-substituted pyrazolo[3,4-d][1,2,4]triazolo[4,3-a]pyrimidinones, pyrazolo[4,3-e][1,2,4]triazolo[4,3-a]pyrimidinones, and their thermal isomerization View Full Text


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Article Info

DATE

2010-02

AUTHORS

R. I. Vas’kevich, A. V. Bentya, V. I. Staninets

ABSTRACT

The reaction of 1-(4-oxo-1-R-5H-pyrazolo[3,4-d]pyrimidin-6-yl)-4-arylthiosemicarbazides with methyl iodide gave rise to 1,2,4-triazolo-pyrazolopyrimidinones of linear structure, and with dicyclohexylcarbodiimide the products had angular and linear structure. The heating of compounds obtained higher than their melting point resulted in their isomerization into 7-aryl-amino-1-R-1,8-dihydro-4H-pyrazolo[3,4-d]-[1,2,4]triazolo[1,5-a]pyrimidin-4-ones.

PAGES

286-290

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s1070428010020235

DOI

http://dx.doi.org/10.1134/s1070428010020235

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1010291914


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