1050619-95-8Relevant articles and documents
New application of heterocyclic diazonium salts: Synthesis of new pyrazolo[3,4-d][1,2,3]triazin-4-ones
Moyano, Elizabeth L.,Colomer, Juan Pablo,Yranzo, Gloria I.
experimental part, p. 3377 - 3381 (2009/04/06)
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.