Ruthenium-Catalyzed Dehydrogenative Aromatic CH Silylation of Benzamides with Hydrosilanes
作者:Kosuke Takada、Tsurugi Hanataka、Takeshi Namikoshi、Shinji Watanabe、Miki Murata
DOI:10.1002/adsc.201401078
日期:2015.7.6
ruthenium‐catalyzed dehydrogenative silylation of benzamides with 1,1,1,3,5,5,5‐heptamethyltrisiloxane took place at ortho‐positions of the benzene ring. Several benzamides containing both electron‐donating and electron‐withdrawing groups could be used in this silylation. Density functional theory (DFT) calculations and kinetic isotope effect experiments suggest that the catalytic cycle should involve the CSi bond
苯甲酰胺与1,7,1,1,3,5,5,5,5-庚甲基三硅氧烷的钌催化脱氢甲硅烷基化反应发生在苯环的邻位。在甲硅烷基化反应中可以使用几种同时含有给电子基团和吸电子基团的苯甲酰胺。密度泛函理论(DFT)计算和动力学同位素效应实验表明,催化循环应将CSi键的形成作为速率确定步骤。