User-Friendly Platinum Catalysts for the Highly Stereoselective Hydrosilylation of Alkynes and Alkenes
Steve Dierick1, Emilie Vercruysse1, Guillaume Berthon-Gelloz1
1Laboratoire de Chimie Organique et Médicinale, Université catholique de Louvain, IMCN/MOST, Bâtiment Lavoisier, Place Louis Pasteur 1 bte L4.01.02, 1348 Louvain-la-Neuve (Belgium).
Abstract:
With a view to addressing the shortcomings of traditional catalysts, a new generation of outstanding N-heterocyclic carbene platinum(0) complexes for the hydrosilylation of unsaturated carbon-carbon bonds is reported. Their discovery and application to the stereoselective addition of various silanes to silylated alkynes, terminal acetylenes, and olefins is presented. Insights into the catalytic cycle and the origin of the stereoselectivity are also discussed.
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Analogous to alkenes, alkynes also undergo acid-catalyzed hydration. While the addition of water to an alkene gives an alcohol, hydration of alkynes produces different products such as aldehydes and ketones.
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