1-甲基-2-咪唑甲醛与2-(1-甲基肼基)吡啶的缩合导致合成新的三齿席夫碱配体L,该配体容易与CoCl 2反应形成单金属[Co L Cl 2 ]配合物还原后,用作活性氢化硅烷化催化剂。所述配体和[Co L Cl 2 ]催化剂已经通过光谱法(MS,NMR,FTIR)和通过单晶X射线衍射技术进行了表征。初步催化实验的结果表明,取决于所用的氢硅烷底物,钴配合物可引起烯烃的氢化硅烷化和脱氢甲硅烷基化。
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‐drivenmetal‐free hydrosilylation of both electron‐deficient and electron‐rich alkenes that proceeds through selective hydrogen atom transfer