Base-promoted regiodivergent allylation of N-acylhydrazones with Morita-Baylis-Hillman carbonates by tuning the catalyst

A regiodivergent allylation of N-acylhydrazones with Morita-Baylis-Hillman (MBH) carbonates has been developed, providing alpha- or gamma-allylated products in excellent yields by using different catalysts. The nature of the base catalyst plays a pivotal role in controlling the reaction pathway, allowing regiospecific access to diverse allylic substituted target compounds from identical substrates.