Enantioselective Tsuji‐Trost α‐Fluoroallylation of Amino Acid Esters with <i>Gem</i>‐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:——
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.
A highlyefficient diastereoselective transferhydrogenation of α-aminoalkyl α'-chloromethyl ketones catalyzed by a tethered rhodium complex was developed and successfully utilized in the synthesis of the key intermediates of HIV protease inhibitors. With the current Rh(iii) catalyst system, a series of chiral 3-amino-1-chloro-2-hydroxy-4-phenylbutanes were produced in excellent yields and diastereoselectivities