Z-Selective semihydrogenation of alkynes via Ni/Lewis acid synergistic catalyzed system using DMF as hydrogen source and solvent.

A Ni/Lewis acid dual-catalytic system has been developed for the Z-selective semihydrogenation of alkynes. Utilizing DMF as both the hydrogen donor and reaction medium, this method affords Z-alkenes in high yield with excellent stereoselectivity under mild conditions. The protocol employs cost-effective and readily available catalysts, and demonstrates broad applicability across a wide range of substrates.