Aromatic Spiroketal Bisphosphine Ligands: Palladium-Catalyzed Asymmetric Allylic Amination of Racemic Morita-Baylis-Hillman Adducts

Showing a backbone: The spiroketal backbone of the bis(phosphine) ligand 1 led to good regio‐ and enantioselectivity in the palladium‐catalyzed asymmetric allylic amination of racemic Morita–Baylis–Hillman adducts with aromatic amines. The methodology provides a facile and efficient synthesis of precursors for optically active β‐lactam derivatives, including the cholesterol drug Ezetimibe.