The asymmetric allylboration reaction is an extensively studied synthetic method.[1] The operational simplicity and chiral building blocks afforded readily account for the utility of the reaction.[2] Studies aimed at the development of a catalytic enantioselective allylboration of ketones [3] identified chiral biphenols as effective promoters of the reaction; however, the reaction required the use of relatively high catalyst loadings [Eq.(1)].[4] Reducing catalyst ...
