4-乙酰氮氧苯在硫酸中的氧转移反应。

J. Yamamoto, K. Hamanaka, T. Tsuboi
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引用次数: 2

摘要

当原料4-乙酰- onn -和- nno -偶氮苯(分别为1α和1β)在70% /80%硫酸中加热时,观察到α/β异构化和4-乙酰-4′-羟基偶氮苯(2)的Wallach重排。然而,在反应产物中既没有检测到邻羟基偶氮苯,也没有检测到4-乙酰偶氮苯。1α的异构化速度比1β快,表明后者具有更高的热力学稳定性。
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The Oxygen Transfer Reaction of 4-Acetylazoxybenzenes in Sulfuric Acid.
When the starting materials 4-acetyl-ONN- and -NNO-azoxybenzene(1α and 1β, respectively) were heated in 70/80% sulfuric acid, α/β isomerization and the Wallach rearrangement to 4-acetyl-4′-hydroxyazobenzene (2) were observed. However, neither the o-hydroxyazobenzene nor 4-acetyl azobenzene was detected in the reaction product. The isomerization of 1α was faster than that of 1β, demonstrating the higher themodynamic stability of the latter.
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