- New application of heterocyclic diazonium salts: Synthesis of new pyrazolo[3,4-d][1,2,3]triazin-4-ones
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7-Substituted 3,7-dihydro-4H-pyrazolo[3,4-d][1,2,3]triazin-4-ones 2a-d were conveniently prepared by direct diazotization of 5-aminopyrazole-4- carbonitriles 1a-d in HCl media. Different reaction conditions and the effects of substituents on N-1 of the pyrazole ring were studied. A possible mechanistic exlpanation of the observed process is proposed. Wiley-VCH Verlag GmbH & Co. KGaA, 2008.
- Moyano, Elizabeth L.,Colomer, Juan Pablo,Yranzo, Gloria I.
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experimental part
p. 3377 - 3381
(2009/04/06)
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