Mechanism of the Iridium-Catalyzed Silylation of Aromatic C-H Bonds.

ABSTRACT: Phenanthroline ligands and [Ir(cod)(OMe)]₂ form complexes that catalyze the silylation of aromatic and aliphatic C-H bonds. However, no experimental data on the identity of complexes related to the mechanism of this process or the mechanisms by which they react to functionalize C-H bonds have been reported. Herein, we describe our studies on the mechanism of the iridium-catalyzed silylation of aryl C-H bonds. The resting state of the catalyst is an iridium disilyl hydride complex (phenanthroline)Ir(SiMe(OTMS)₂)₂(H)(L), in which L varies with the arene and additives. An iridium disilyl hydride complex was isolated, characterized, and allowed to react with arenes to form aryl silanes. The kinetics of the reactions of electron-rich and electron-poor arenes sho

SUBMITTER: Karmel C 

PROVIDER: S-EPMC7660231 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature