Visible-Light-Mediated Metal-Free Hydrosilylation of Alkenes through Selective Hydrogen Atom Transfer for Si−H Activation
作者:Rong Zhou、Yi Yiing Goh、Haiwang Liu、Hairong Tao、Lihua Li、Jie Wu
DOI:10.1002/anie.201711250
日期:2017.12.22
Although there has been significant progress in the development of transition‐metal‐catalyzed hydrosilylations of alkenes over the past several decades, metal‐free hydrosilylation is still rare and highly desirable. Herein, we report a convenient visible‐light‐driven metal‐free hydrosilylation of both electron‐deficient and electron‐rich alkenes that proceeds through selective hydrogen atom transfer
尽管在过去的几十年中,烯烃在过渡金属催化的氢化硅烷化的开发方面已取得了重大进展,但无金属的氢化硅烷化仍然十分罕见,因此非常值得期待。在此,我们报道了通过缺氧和富电子烯烃的便捷的可见光驱动的无金属氢化硅烷化反应,该过程通过选择性氢原子转移进行Si-H活化而进行。有机光氧化还原催化剂4CzIPN与奎宁环烯-3-乙酸基酯的协同结合能够通过选择性Si-H活化实现缺电子烯烃的氢化硅烷化,而富电子烯烃的氢化硅烷化则是通过合并光氧化还原和极性反转催化来实现的。