Iridium(III)‐Catalyzed Direct CH Sulfonamidation of 2‐Aryl‐1,2,3‐triazole
<i>N</i>
‐Oxides with Sulfonyl Azides
作者:Bingfeng Zhu、Xiuling Cui、Chao Pi、Dong Chen、Yangjie Wu
DOI:10.1002/adsc.201501036
日期:2016.1.21
We have developed a method for the direct sulfonamidation of 2‐aryl‐1,2,3‐triazole N‐oxides using sulfonyl azides as the amino source to release molecular nitrogen as the sole by‐product. This protocol exhibits excellent functional group tolerance and proceeds efficiently under external oxidant‐free conditions. Various 2‐(2‐sulfonamidoaryl)‐1,2,3‐triazoles were prepared in up to 97% yields for 25 examples
我们已经开发了一种方法,该方法使用叠氮化磺酰作为氨基源,直接释放2-芳基1,2,3-三唑N-氧化物的磺酰胺化,以释放分子氮作为唯一的副产物。该方案具有出色的官能团耐受性,并且在无外部氧化剂的条件下可有效进行。对于25种具有优异区域选择性的实例,以高达97%的收率制备了各种2-(2-磺酰胺基芳基)-1,2,3-三唑。