Abstract
A novel enantioselective macrocyclization method has been developed for the asymmetric synthesis of planar-chiral macrocycles through chiral phosphoric acid-catalyzed intramolecular addition of the hydroxy group with the allenamide moiety. A series of planar-chiral macrocycles bearing various ring sizes (18-member to 22-member) and various functional groups were generated with good to high enantioselectivities.
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