Asymmetric α-Allylation of α-Branched Aldehydes with Allyl Alcohols by Synergistic Catalysis Using an Achiral Palladium Complex and a Chiral Primary Amino Acid
2014
Highly enantioselective direct α-allylation of α-branched aldehydes with simple allyl alcohols was achieved by the combined use of an achiral transition-metal catalysis with a palladium complex and a chiral organocatalysis with a readily obtainable primary α-amino acid. Various α-allylated aldehydes possessing a stereocontrolled quaternary carbon stereogenic center were synthesized in high yields with high enantioselectivity.
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