Direct C(sp<sup>3</sup>)–H Sulfonylation of Xanthene Derivatives with Sodium Sulfinates by Oxidative Copper Catalysis
作者:Qinghao Song、He Zhao、Yanping Sun、Huanfeng Jiang、Min Zhang
DOI:10.1002/cjoc.202100767
日期:2022.2
By employing a readily available CuCl/DDQ catalyst system, we herein report a direct C(sp3)–H sulfonylation of xanthene derivates with odorless sodium sulfinates. Various 9H-xanthenes, thioxanthenes, and 9,10-dihydroacridines are efficiently transformed into the desired benzylic sulfonyl products via a radical/radical cross-coupling process, proceeding with the merits of broad substrate scope, operational
通过使用易于获得的 CuCl/DDQ 催化剂体系,我们在此报告了使用无味亚磺酸钠对呫吨衍生物进行直接 C(sp 3 )-H 磺酰化。各种 9 H-呫吨、噻吨和 9,10-二氢吖啶通过自由基/自由基交叉偶联过程有效转化为所需的苄基磺酰基产物,具有底物范围广、操作简单、官能团兼容性好等优点,和温和的反应条件。