Dual photoredox nickel-catalyzed silylation of aryl/heteroaryl bromides using hydrosilanes
作者:Shuai Liu、Frédéric Robert、Yannick Landais
DOI:10.1039/d3cc03246a
日期:——
Dual Ni and Ir catalysis enables the preparation of arylsilanes having a (TMS)3Si substituent from the corresponding aryl bromides and (TMS)3SiH at 30 °C using visible-light irradiation. This protocol avoids strong bases, high temperature and air and moisture sensitive silyl reagents, providing the expected arylsilanes in moderate to good yields. The reaction was shown to proceed through a silyl radical
Ni 和 Ir 双催化能够在 30 °C 下使用可见光照射从相应的芳基溴和 (TMS) 3 SiH 制备具有 (TMS) 3 Si 取代基的芳基硅烷。该方案避免了强碱、高温以及对空气和湿度敏感的甲硅烷基试剂,以中等至良好的收率提供了预期的芳基硅烷。该反应通过甲硅烷基自由基进行,该甲硅烷基自由基可能是通过溴自由基从 (TMS) 3 SiH 中夺取氢原子而产生的。