By employing a readily available CuCl/DDQ catalyst system, we herein report a directC(sp3)–Hsulfonylation 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
Electrochemically Mediated Direct C(
<i>sp</i>
<sup>3</sup>
)−H Sulfonylation of Xanthene Derivatives
作者:Wan‐Jie Wei、Yu‐Jing Zhong、Yu‐Feng Feng、Lei Gao、Hai‐Tao Tang、Ying‐Ming Pan、Xian‐Li Ma、Zu‐Yu Mo
DOI:10.1002/adsc.202101289
日期:2022.2.15
The construction of C(sp3)-sulfonyl bonds through directsulfonylation of C(sp3)−H bond presents a number of challenges, so an electrochemical oxidation-induced directsulfonylation of the xantheneC(sp3)−H bond was developed. Significant advantages of this method are high atom efficiency, functional group tolerance, transition metal- and oxidant-free conditions. The in vitro cytotoxicity of all product