Rh(I)-Catalyzed Synthesis of Aryltriethoxysilanes from Aryl Electrophiles

Significance

Arylsiloxanes and their analogues have been developed recently as an alternative to boron and tin nucleophiles for the new carbon-carbon and carbon-heteroatom bond-forming reactions. Their direct preparation from aryl halides of sulfonates under mild conditions is therefore of high synthetic value. Herein, a mild Rh-catalyzed preparation of triethoxysilanes from aryl iodides, bromides, and triflates is reported. This reaction tolerates a majority of functional groups, affords products in good to excellent yields and is simple to perform.