Synthesis of 4-arylamino-3-(trifluoromethyl)pyridazines and pyridazino[3,4-b]quinoxalines (as by-products) from 3-aroylmethyl-2-(trifluoromethyl)quinoxalines and hydrazine hydrate
作者:Vyacheslav Y. Sosnovskikh、Alexander V. Safrygin、Roman A. Irgashev、Marina A. Ezhikova、Mikhail I. Kodess
DOI:10.1039/c5ra27032d
日期:——
4-arylamino-3-(trifluoromethyl)pyridazines were obtained in good yields via the novel reaction of 3-aroylmethyl-2-(trifluoromethyl)quinoxalines with an excess of hydrazine hydrate in refluxing n-butanol with or without acetic acid. This reaction is accompanied by the formation of side-products with the pyridazino[3,4-b]quinoxaline skeleton. The possible reaction mechanism was discussed.
通过使3-芳酰基甲基-2-(三氟甲基)喹喔啉与过量的水合肼在回流的正丁醇中,在有或没有乙酸的情况下进行新颖的反应,以高收率获得了许多4-芳基氨基-3-(三氟甲基)哒嗪。该反应伴随有带有哒嗪并[3,4- b ]喹喔啉骨架的副产物的形成。讨论了可能的反应机理。