Hydrosilylaatiota

Hydrosilylaatiota is a chemical reaction where a silicon-hydrogen bond (Si-H) adds across an unsaturated bond, typically a carbon-carbon double or triple bond. This process is catalyzed by transition metals, with platinum complexes being the most common and effective catalysts. Other metals such as rhodium, ruthenium, and iridium can also be used. The reaction is highly regioselective and stereoselective, meaning the hydrosilyl group typically adds to a specific carbon atom and with a defined stereochemistry.

The mechanism of hydrosilylation generally involves oxidative addition of the Si-H bond to the metal catalyst, followed by coordination and insertion of the unsaturated substrate into the metal-silicon bond, and finally reductive elimination to form the silylated product and regenerate the catalyst. This reaction is a cornerstone in organosilicon chemistry, enabling the synthesis of a vast array of silicon-containing compounds. These compounds find applications in diverse fields, including the production of silicone polymers, surface modification agents, and intermediates for pharmaceuticals and agrochemicals. The versatility and efficiency of hydrosilylation have made it an indispensable tool in both academic research and industrial synthesis.