Exploring the scope of the alkene substitution pattern demonstrated that internal alkenes such as cyclopentene and cyclohexene could be used to access BCH structures 3p and 3q exclusively as the cis-diastereomer. However, increasing the ring size to cyclooctene resulted in isomerisation to the transisomer (3r). Pleasingly, non-cyclic 1,2-disubstituted alkenes such as (E)-oct-3-ene were also compatible, providing 3s in 30% yield as a single diastereomer. Unsurprisingly, with no significant electronic or steric bias, a mix of regioisomers was observed for this substrate. On the other hand, when trisubstituted alkene 2-methylpent-2-ene was utilised, only a single regioisomer (3t) was detected in the reaction mixture, demonstrating the ability of the system to clearly distinguish between mono-and disubstituted sp 2 carbon atoms.