Mechanochemical Synthesis of 1,2,4‐Triazoles via a [3+2] Cycloaddition of Azinium‐
<i>N</i>
‐Imines and Nitriles
作者:Baofu Zhu、Wen Li、Haixin Chen、Minjian Wu、Jijing Hu、Hua Cao、Xiang Liu
DOI:10.1002/adsc.202200463
日期:2022.9.6
We report here a mechanochemical Cu-catalyzed [3+2] cycloaddition of azinium-N-imines with nitriles under solventless grinding conditions. Various 1,2,4-triazolos derivatives were obtained in 51–80% yields. The developed protocol offers advantages in functional-group compatibility, scalability, no use of solvents, shorter reaction time, and without external heating. In addition, heterocyclic N-imines
我们在此报告了在无溶剂研磨条件下机械化学 Cu 催化的 [3+2] 氮鎓-N-亚胺与腈的环加成反应。以 51-80% 的收率获得了各种 1,2,4-三唑衍生物。开发的协议在官能团兼容性、可扩展性、不使用溶剂、反应时间更短以及无需外部加热等方面具有优势。此外,杂环N-亚胺如喹啉鎓和异喹啉鎓盐也是合适的底物,从而产生1,2,4-三唑并[1,5- a ]喹啉和1,2,4-三唑并[5,1 - a ] 异喹啉衍生物在机械化学条件下。