Catalytic hydrosilylation of unsaturated bonds has evolved into one powerful tool in creating organosilicon compounds for multitudinous uses. A substantial proportion of this rapidly developing field is the hydrosilylation of 1-substituted alkenes, which has been well developed and widely used in building macromolecular organosilicon compounds of great industrial importance. For instance, various novel polycarbosilanes have been accessed through diverse hydrosilylation polymerization strategies (a, Scheme 1). Besides the numerous alterations in polymer backbones, the introduction of different side chains is expected to have potential beneficial impact on the properties of these intriguing materials. Polymerization based on hydrosilylation of 1,1,-disubsituted alkenes would be one convenient and direct method to achieve this, through which functional substitutions could be anchored next to the silicon center (b, Scheme 1). However, as the steric hindrance in the alkene substrate usually retards the hydrosilylation process, efficient methods toward hydrosilylation of bulky 1,1disubstituted alkenes are far less developed, resulting in the rare reports on corresponding applications in material science. Scheme 1 Hydrosilylation of alkenes.