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Visible-Light-Induced Hydrosilylation Enabled by an In Situ Assembled Photoactive Complex
Siqing Liu1, Wanhui Huang1, Denghui Ma2
1State Key Laboratory of Structural Chemistry, Center for Excellence in Molecular Synthesis, Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, China.
None:
A photosensitizer-free, visible-light-driven hydrosilylation is reported. Mixing a nonaromatic substrate, tris(trimethylsilyl)silane, and Cs2CO3 generates a visible-light-absorbing species, which upon 456 nm irradiation produces silicon-centered radicals without an exogenous photocatalyst. These radicals enable hydrosilylation of diverse alkenes and alkynes, and also serve as halogen-atom transfer reagents for dehalogenation. This strategy eliminates the need for external initiators, photocatalysts, or HAT mediators.
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