Abstract
Coupling of 3-alkyl-4-aryl-1H-pyrazole-5-diazonium chlorides with methylene-active methyl phenacyl sulfones afforded new pyrazolo[5,1-c][1,2,4]triazine derivatives via cyclization of the corresponding intermediate 1-aryl-2-(hetarylhydrazinylidene)-2-(methanesulfonyl)ethanones. The reactivity of the methanesulfonyl group on C3 of pyrazolo[5,1-c][1,2,4]triazines toward some nucleophiles was studied.
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Original Russian Text © I.V. Ledenyova, P.A. Kartavtsev, Kh.S. Shikhaliev, A.Yu. Egorova, 2016, published in Zhurnal Organicheskoi Khimii, 2016, Vol. 52, No. 9, pp. 1328–1333.
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Ledenyova, I.V., Kartavtsev, P.A., Shikhaliev, K.S. et al. 4-Aryl-3-(methanesulfonyl)pyrazolo[5,1-c][1,2,4]triazines and their transformations. Russ J Org Chem 52, 1316–1321 (2016). https://doi.org/10.1134/S1070428016090116
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DOI: https://doi.org/10.1134/S1070428016090116