A visible light-promoted hydrosilylation of alkynes has been explored and achieved using 1 mol % organic dye Eosin Y as the photocatalyst and a catalytic amount of thiol as the radical quencher. The corresponding alkenylsilanes were provided with high regio- and stereoselectivites in the reactions of various terminal and internal alkynes. The experimental evidence shows that the reaction is preferentially initiated by a single electron transfer process, and a photoredox pathway is suggested.

中文翻译：

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曙红Y和硫醇在可见光辐射下催化炔烃的自由基氢化硅烷化

使用1 mol％的有机染料曙红Y作为光催化剂和催化量的硫醇作为自由基猝灭剂，已经探索并实现了炔烃的可见光促进的氢化硅烷化。在各种末端和内部炔烃的反应中，相应的烯基硅烷具有高区域选择性和立体选择性。实验证据表明，该反应优先通过单电子转移过程引发，并提出了光氧化还原途径。