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.
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