Transition-metal-free regioselective synthesis of alkylboronates from arylacetylenes and vinyl arenes

A transition-metal-free synthesis of alkylboronates from arylacetylenes or vinyl arenes and B₂pin₂via tandem borylation and protodeboronation has been developed. This reaction features with excellent regioselectivities, broad functional group tolerance and good yields in both small and gram scale.