TBAI or KI-Promoted Oxidative Coupling of Enamines and <i>N</i>
-Tosylhydrazine: An Unconventional Method toward 1,5- and 1,4,5-Substituted 1,2,3-Triazoles
作者:Wei Huang、Chuanle Zhu、Minke Li、Yue Yu、Wanqing Wu、Zhengchao Tu、Huanfeng Jiang
DOI:10.1002/adsc.201800487
日期:2018.8.17
A novel method for the synthesis of 1,5‐ and 1,4,5‐substituted 1,2,3‐triazoles has been reported. This approach is promoted by iodine‐TBHP oxidation system using enamines and N‐tosylhydrazine as materials, which avoid the dependence of traditional methods on azides and transition metals. Through this approach, various 1,5‐ and 1,4,5‐substituted 1,2,3‐triazoles were delivered in moderate to high yields
已经报道了一种合成1,5-和1,4,5-取代的1,2,3-三唑的新方法。使用烯胺和N-甲苯磺酰肼作为原料的碘-TBHP氧化系统促进了这种方法,避免了传统方法对叠氮化物和过渡金属的依赖。通过这种方法,各种1,5-和1,4,5-取代的1,2,3-三唑以中等到高产量提供。机理研究表明,氨基交换将参与反应过程。此外,产品1-(2-甲氧基苯基)-4-甲基-1 H -1,2,3-三唑-5-羧酸甲酯是抗甲型流感药物的有用前体,并进行了进一步的应用研究。