An Operationally Simple, Regioselective, Platinum‐Catalyzed Hydroboration of Unactivated Alkynes

Herein is reported a new PtCl2/XPhos/Et3SiH‐catalyzed hydroboration method for unactivated terminal alkynes. Significantly, the reaction proceeds in hindered alkyne systems, and works well on acetylenes that contain multiple heteroatom‐groups to provide the desired (E)‐1,2‐vinyl boronates in reasonable to high yields with excellent levels of stereo‐ and regio‐control.