Ru-Catalyzed Dehydrogenative Silylation of POSS-Silanols with Hydrosilanes: Its Introduction to One-Pot Synthesis

A commercially available and stable ruthenium dodecacarbonyl catalyst (Ru<sub>3</sub>(CO)<sub>12</sub>) allows very efficient and convenient access to functionalized silsesquioxanes (SQs) containing siloxane moiety (Si–O–Si) via dehydrogenative coupling of POSS-silanols with hydrosilanes. With the aid of SiH-containing silsesquioxanes, an unprecedented one-pot procedure has been revealed, and the usefulness of this approach was demonstrated by the synthesis of various derivatives via O-silylation, as well as CC and CN hydrosilylation.