Sequential Coupling of Zincated Hydrazone, Alkenylboronate, and Electrophile That Creates Several Contiguous Stereogenic Centers

Abstract
A zincated N,N-dimethylhydrazone of a ketone undergoes stereospecific syn addition to E- or Z-alkenylboronate to generate a γ-Zn/B dimetallic intermediate, which reacts with a carbon electrophile to give a γ-borylhydrazone in good yield with excellent diastereoselectivity, creating two to four contiguous stereogenic centers in a one-pot reaction.