A chiralaldehyde is rationally combined with a Lewis acid and a transition metal for the first time to form a triple catalytic system. This cocatalytic system exhibits good catalytic activation and stereoselective-control abilities in the asymmetric α-allylation reaction of N-unprotected amino acid esters and allyl acetates. Optically active α,α-disubstituted α-amino acids (α-AAs) are generated in
Enantioselective Tsuji‐Trost α‐Fluoroallylation of Amino Acid Esters with Gem‐Difluorinated Cyclopropanes
作者:Zheng Su、Binhong Tan、Hui He、Kaifeng Chen、Shixin Chen、Hongtao Lei、Tie‐Gen Chen、Shao‐Fei Ni、Zhaodong Li
DOI:10.1002/anie.202402038
日期:2024.6.3
aldehyde synergistic relay system was developed for the enantioselective ring-opening functionalization of gem-difluorinated cyclopropanes with N-unprotected aminoacidesters, enabling the efficient assembly of α-quaternary α-amino acidesters bearing a linear 2-fluoroallylic motif in a highly enantioselective manner.