Organo-Catalyzed Regio- and Geometry-Specific Construction of β-Hydroxyl-α-vinyl Carboxylic Esters: Substrate Scope, Mechanistic Insights, and Applications
A green protocol has been developed for the synthesis of β-hydroxyl-α-vinyl carboxylicesters using aldehydes and α,β-unsaturatedesters bearing an activated γ proton as starting materials under Morita–Baylis–Hillman (MBH) reaction conditions. Diverse β-hydroxyl-α-vinyl carboxylicesters have been synthesized regiospecifically in moderate to good yields with only E geometric selectivity. Other remarkable