Copper( i )-catalyzed carbon–halogen bond-selective boryl substitution of alkyl halides bearing terminal alkene moieties

The selective boryl substitution of alkyl halides bearing terminal C[double bond, length as m-dash]C double bonds has been achieved using a copper(i)/tricyclohexylphosphine or copper(i)/o-diphenylphosphinophenol catalyst. This reaction represents a useful complementary approach to conventional procedures for the hydroboration of C[double bond, length as m-dash]C double bonds or the borylative cyclization of alkyl halides bearing terminal alkenes.