Direct silylation reactions of inert C-H bonds via transition metal catalysis

In the past thirty years, transition metal catalyzed silylation of inert C-H bonds has attracted intensive attention due to the importance and wide use of organosilicon compounds. In this review, the silylation reactions of inert C-H bonds catalyzed by transition metal complexes of Ir, Rh, Ru, Pt, Pd, Ni, and Sc, and the strategies utilized to access the site-selective C-H silylation products have been summarized. Furthermore, the mechanisms of C-H silylation reactions have been discussed briefly.