1,1-Disubstituted olefin synthesis via Ni-catalyzed Markovnikov hydroalkylation of alkynes with alkyl halides.

A Ni-catalyzed Markovnikov hydroalkylation of alkynes with alkyl halides is described. The reaction proceeds smoothly without the use of sensitive organometallic reagents and shows good functional-group compatibility, enabling the efficient synthesis of a variety of 1,1-disubstituted olefins. It also provides a straightforward approach for the modification of complex organic molecules.