Hydrogen Tunneling in Catalytic Hydrolysis and Alcoholysis of Silanes
作者:Naroa Almenara、Maria A. Garralda、Xabier Lopez、Jon M. Matxain、Zoraida Freixa、Miguel A. Huertos
DOI:10.1002/anie.202204558
日期:2022.9.5
A “giant” kinetic isotope effect (KIE=346) has been observed for the generation of hydrogen from the hydrolysis of silanes catalyzed by a silyl-iridium(III) complex. This and other experimental evidence together with theoretical calculations have been used to demonstrate the participation of hydrogen quantum tunneling in this catalytic process.
The hydrogenolysis of benzyloxysilanes was smoothly catalyzed by Pd/C in THF to give corresponding silanols under nonhydrolytic conditions. The reaction proved to be applicable to various benzyloxysilanes giving silanemonools, diol, and triol.