Chinese Journal of Applied Chemistry ›› 2022, Vol. 39 ›› Issue (3): 425-438.DOI: 10.19894/j.issn.1000-0518.210114

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Asymmetric Reduction of Chain Aliphatic Ketoesters Catalyzed by Tris[(S)⁃α,α⁃bis(4⁃methylphenyl)⁃2⁃pyrrolidine methanol]phosphonamide

Li-Yan CHEN1,2, Dong-Xing TAN1(), Fu-She HAN1,2()   

  1. 1.CAS Key Lab of High-Performance Synthetic Rubber and Its Composite Materials,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
    2.Academy of Applied Chemistry and Engineering University of Science and Technology of China,Hefei 230026,China
  • Received:2021-03-15 Accepted:2021-06-29 Published:2022-03-01 Online:2022-03-15
  • Contact: Dong-Xing TAN,Fu-She HAN
  • About author:dxtan@ciac.ac.cnfshan@ciac.ac.cn
  • Supported by:
    the National Natural Science Foundation of China(22071235)

Abstract:

The asymmetric reduction of chain aliphatic ketoesters catalyzed by tris[(S)?α,α?bis(4-methylphenyl)-2-pyrrolidine methanol]phosphonamide was reported. The protocol displays good catalytic efficiency for the chain ketoesters with the carbon number of 5-11. With the presence of molar fraction 5% of the chiral phosphonamide catalyst, the yield of the chiral hydroxy esters is up to 89% and the enantionmeric excesses (ee) value is up to 95%. This method provides an alternative option for the synthesis of chiral γ- or δ- hydroxy esters.

Key words: Ketoesters, Hydroxy esters, Chiral phosphonamide, Asymmetric reduction

CLC Number: