N-(Phenylsulfonyl)- and N-methyl-N-(phenylsulfonyl)benzohydrazonoyl azides, prepared from the corresponding hydrazonoyl chlorides and sodium azide, undergo the cyclization to 5-phenyl-1-(phenylsulfonylamino)-1H-tetrazoles together with the competitive decomposition to benzonitriles and the Curtius-type rearrangement leading to semicarbazides when heated in benzene under reflux. The tetrazole formation of hydrazonoyl azides may be characteristic of such hydrazonoyl azides as those carrying an N-sulfonyl substituent, the strong electron-withdrawing nature of which probably promotes the cyclization.
N-(苯磺酰基)-和 N-甲基-N-(苯磺酰基)苯甲
肼肟氮化物,从相应的
肼肟氯化物和
叠氮化
钠制备而成,在苯中加热回流时会发生环化,生成 5-苯基-1-(苯磺酰
氨基)-
1H-四唑,同时还会竞争性分解生成苯腈和库尔蒂斯型重排生成半
肼。
肼肟氮化物的
四唑形成可能是此类带有 N-磺酰基取代基的
肼肟氮化物的特征,其强电子吸引特性可能促进环化反应的发生。