Cobalt‐Catalyzed Alkyne Hydrosilylation and Sequential Vinylsilane Hydroboration with Markovnikov Selectivity

• DOI: 10.1002/ange.201605615
• Publication Date: 2016-08-02T17:45:31Z
• Authors: Ziqing Zuo; Ji Yang; Zheng Huang
• Keywords: Hydrosilylation; Markovnikov's rule; Vinylsilane; Hydroboration; Alkyne

Abstract A pyridinebis(oxazoline) cobalt complex is a very efficient precatalyst for the hydrosilylation of terminal alkynes with Ph 2 SiH , providing α‐vinylsilanes high (Markovnikov) regioselectivity and broad functional‐group tolerance. The vinylsilane products can be further converted into geminal borosilanes through Markovnikov hydroboration pinacolborane bis(imino)pyridine catalyst.