Synthesis of aryltriethoxysilanes via rhodium(I)-catalyzed cross-coupling of aryl electrophiles with triethoxysilane
The general and efficient silylation of aryl halides has been developed utilizing triethoxysilane and a rhodium catalyst. The substrate scope is broad and includes ortho-, meta-, and para-substituted electron-rich and -deficient aryl iodides. In addition, the silylation of aryl bromides and fluoroalkanesulfonates proceeded in the presence of tetra-n-butylammonium iodide.
Rhodium(I)-Catalyzed Silylation of Aryl Halides with Triethoxysilane: Practical Synthetic Route to Aryltriethoxysilanes
(Equation Presented) The specific silylation of aryl iodides and bromides with triethoxysilane (EtO)3SiH in the presence of NEt3 and a catalytic amount of [Rh-(cod)(MeCN)2]BF4 provides the corresponding aryltriethoxysilanes in high yield.