Palladium‐Catalyzed Asymmetric Construction of Vicinal Tertiary and All‐Carbon Quaternary Stereocenters by Allylation of β‐Ketocarbonyls with Morita–Baylis–Hillman Adducts

Abstract

AbstractPalladium‐catalyzed regio‐, diastereo‐, and enantioselective allylic alkylation of β‐ketocarbonyls with Morita–Baylis–Hillman adducts has been developed using a spiroketal‐based diphosphine (SKP) as the ligand, thus affording a range of densely functionalized products bearing vicinal tertiary and all‐carbon quaternary stereodyad in high selectivities. The utility of the protocol was demonstrated by the facile synthesis of some complex molecules by simple product transformations.