Heating of 2-(alkyl-NNO-azoxy)-1-azidobenzenes in boiling benzene gave 2-alkyl-benzotriazole 1-oxides (Alk = Me, Et, Pri, and But). This first-order reaction involves an earlier unknown intramolecular interaction between the azido and azoxy groups with simultaneous release of molecular nitrogen. The cyclization rate increases in the following sequence of the alkyl groups: Me < Et < Pri < But. Complete assignment of the signals in the 1H, 13C, and 14N NMR spectra of 2-alkylbenzotriazole 1-oxides was performed.
在沸腾的苯中加热 2-(烷基-NNO-氮氧基)-1-
叠氮苯,可得到 2-烷基苯并三唑 1-氧化物(Alk = Me、Et、Pri 和 But)。这种一阶反应涉及
叠氮基团和
叠氮氧基团之间早先未知的分子内相互作用,同时释放出分子氮。烷基的环化速率按以下顺序增加:Me < Et < Pri < But。对 2-烷基苯并三唑 1-氧化物的 1H、13C 和 14N NMR 光谱信号进行了完整的分配。