multiple carbon–halogen bonds are still needed. Herein, we report the ability to tune the reduction potential of metal-free phenothiazine-based photoredox catalysts and demonstrate the application of these catalysts for chemoselective carbon–halogen bond activation to achieve C–C cross-coupling reactions as well as reductive dehalogenations. This procedure works both for conjugated polyhalides as well as unconjugated
尽管使用芳基卤化物进行脱卤和形成碳-碳键的方法很多,但仍需要为具有多个碳-卤键的系统提供
化学选择性的策略。本文中,我们报告了调节无
金属
吩噻嗪类光氧化还原催化剂还原能力的能力,并证明了这些催化剂在
化学选择性碳-卤素键活化中实现C-C交叉偶联反应以及还原性脱卤的应用。此步骤适用于共轭多卤化物和未共轭底物。我们进一步说明了通过
吡咯底物的分子内环化该协议的有效性,
吡咯底物是已知具有
生物活性的
天然产物家族的高级构建基块。