Rhodium-catalyzed asymmetric 1,4-addition of 2-alkenyl-1,3,2- benzodioxaboroles to α,β-unsaturated ketones

Article abstract of DOI:10.1016/S0040-4039(98)01866-8

Reaction of 2-alkenyl-1,3,2-benzodioxaboroles, which are readily accessible by hydroboration of alkynes with catecholborane, with α,β- unsaturated ketones in the presence of rhodium/(S)-binap catalyst and triethylamine in dioxane/H₂O (10/1) pro