초록 |
Unique catalytic behaviors of boranes, especially B(C6F5)3, are of special interest. Its high and versatile reactivity has widely applied to areas, ranging from hydrosilylation and reduction of simple substrates to biomass conversion into valuable hydrocarbons. Along with many interesting reactions and applications, making or manipulation of macromolecules by boranes is highly anticipated to bring new structures and properties. We recently showcased it by the first example of metal-free hydrosilylation polymerization between dienes and disilanes by B(C6F5)3, which successfully replaced precious transition-metal-based systems. Under the easy-to-handle and mild conditions, various combinations of dienes and disilanes produced polycarbosilanes with a broad range of structures and properties. Their distinctive reactivity and selectivity are discussed herein. |