Metal-Free CN- and NN-Bond Formation: Synthesis of 1,2,3-Triazoles from Ketones,<i>N</i>-Tosylhydrazines, and Amines in One Pot
作者:Zhengkai Chen、Qiangqiang Yan、Zhanxiang Liu、Yuhong Zhang
DOI:10.1002/chem.201405057
日期:2014.12.22
A novel synthetic approach toward 1,4‐disubstituted 1,2,3‐triazoles by CN‐ and NN‐bond formation has been established under transition‐metal‐free conditions. Complete control of the regioselectivity was successfully achieved. Commercially available anilines, ketones, and N‐tosylhydrazine were treated with molecular iodine in one pot to allow the regioselective generation of 1,4‐disubstituted 1,2
在无过渡金属的条件下,已经建立了一种通过CN和NN键形成1,4-二取代的1,2,3-三唑的新颖合成方法。成功实现了对区域选择性的完全控制。在一个锅中用分子碘处理市售的苯胺,酮和N-甲苯磺酰肼,从而可以在不使用叠氮化物的情况下高选择性地生成1,4-二取代的1,2,3-三唑。