Synthesis of new carbosilane dendrimers with hydrophilic end-groups. Polyols

Abstract

The synthesis and characterization of a series of four-, eight-, 16-, and 32-arm carbosilane dendrimers are reported. The four-arm dendrimer was synthesized via the reaction of silicon tetrachloride with a primary organomagnesium compound. The other dendrimers were obtained through an efficient hydrosilylation of polyolefinic dendritic cores with functionalized alkylhydrosilanes. The latter reaction holds promise for the synthesis of larger generation carbosilanes with various hydrophilic end-groups. These compounds should find use as multifunctional anionic initiators for the synthesis of dendrimer-polymer hybrids.