Journal of Fluorine Chemistry

Some novel observations on the reaction of 2-hydrazino-3-methylquinoxaline with trifluoromethyl-β-diketones

R Aggarwal, R Kumar, SP Singh

Index: Aggarwal, Ranjana; Kumar, Rajiv; Singh, Shiv P. Journal of Fluorine Chemistry, 2009 ,  vol. 130,  # 10  p. 886 - 893

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Citation Number: 10

Abstract

The reaction of 2-hydrazino-3-methylquinoxaline 1 with trifluoromethyl-β-diketones 2 not only yields the expected 5-trifluoromethyl-5-hydroxy-Δ2-pyrazolines 3a–3f and/or 3- trifluoromethylpyrazoles 4c–4f but also the unexpected products 1, 2, 4-triazolo [4, 3-a] quinoxalines 5a–5f and/or 3 (5)-trifluoromethyl-1H-pyrazoles 6c–6f. Furthermore, the acid- catalyzed dehydration of 5-hydroxypyrazolines 3a–3b resulted in the formation of ...