Reactions of 6-chloro-4- and 5-hydrazino-2-phenyl-3(2H)-pyridazinones (1–3) with dimethylformamide/phosphorus oxychloride afforded the pyrazolo[3,4-d]pyridazinones (4–6). Concurrently the formation of acyclic 6-chloro-4- and 5-(N, N-dimethylaminomethylidenehydrazino)-2-phenyl-3(2H)-pyridazinones (7–9) has been observed. A mechanism of these reactions is proposed. Compound 8 is shown to form unsolvated
6-氯-4-和5-肼基-2-苯基-3(2 H)-哒嗪酮(1-3)与二甲基甲酰胺/氯氧化磷的反应可得到吡唑并[3,4- d ]哒嗪酮(4-6) 。同时观察到无环6-氯-4-和5-(N,N-二甲基氨基亚甲基肼基)-2-苯基-3(2 H)-哒嗪酮(7-9)的形成。提出了这些反应的机理。显示化合物8形成未溶剂化和包含的化合物,两者均通过X射线衍射表征。
Baloniak, Sylwester; Katrusiak, Anna, Acta Poloniae Pharmaceutica, 1993, vol. 50, # 2.3, p. 179 - 182