Asymmetric α-Allylation of N -Unprotected Amino Acid Esters with 1,3-Disubstituted Allyl Acetates Enabled by Chiral-Aldehyde/Palladium Catalysis.

A chiral aldehyde/palladium catalysis-enabled asymmetric α-allylation of NH 2 -unprotected amino acid esters with 1,3-disubstituted allyl acetates is described in this work. With the utilization of different chiral phosphine ligands, both the anti- and syn- selective allylation reactions are achieved enantioselectively. A series of α,α-disubstituted amino acid esters bearing two adjacent chiral centers are produced in moderate-to-excellent yields, diastereoselectivities, and enantioselectivities.