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Interaction of aminoazoles with Meldrum’s acid and dialkyl ketones or cyclohexanone

Authors:	V V Lipson V V Borodina M G Shirobokova S M Desenko O V Shishkin R I Zubatyuk

Institution:	(1) V. Ya. Danilevsky Institute of Endocrine Pathology Problems, Academy of Medical Sciences of Ukraine, Kharkiv, 61002;(2) Institute of Single Crystals, National Academy of Sciences of Ukraine, Kharkiv, 61001

Abstract:	Interaction of 3-amino-5-methylpyrazole, 3-amino-5-methylthio-, and 3,5-diamino-1,2,4-triazole with Meldrum’s acid, acetone, ethyl methyl ketone, and cyclohexanone leads to alkyl-substituted pyrazolo3,4-b]pyridin-6-ones and 1,2,4-triazolo1,5-a]pyrimidin-7-ones respectively. The structure of 5,5-dimethyl-2-methylthio-4,5,6,7-tetrahydro-1,2,4-triazolo1,5-a]pyrimidin-7-one was demonstrated by an X-ray structural investigation. __________ Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 595–601, April, 2007.

Keywords:	3-amino-5-methylpyrazole 3-amino-5-methylthio-1 2 4-triazole dialkyl ketones 3 5-diamino-1 2 4-triazole Meldrum’ s acid pyrazolo[3 4-b]pyridin-6-ones 1 2 4-triazolo[1 5-a]pyrimidin-7-ones X-ray structural analysis
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