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Rapid, Regioconvergent, Solvent-Free Alkene Hydrosilylation with a Cobalt Catalyst
Chi Chen1, Maxwell B Hecht2, Aydin Kavara2
1Department of Chemistry, Yale University , New Haven, Connecticut 06511, United States.
Abstract:
Alkene hydrosilylation is typically performed with Pt catalysts, but inexpensive base-metal catalysts would be preferred. We report a Co catalyst for anti-Markovnikov alkene hydrosilylation that can be used without added solvent at low temperatures with low loadings, and can be generated in situ from an air-stable precursor that is simple to synthesize from low-cost, commercially available materials. In addition, a mixture of Co catalysts performs a tandem catalytic alkene isomerization/hydrosilylation reaction that converts multiple isomers of hexene to the same terminal product. This regioconvergent reaction uses isomerization as a benefit rather than a hindrance.
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