Chem. J. Chinese Universities ›› 2023, Vol. 44 ›› Issue (4): 20220569.doi: 10.7503/cjcu20220569

• Physical Chemistry • Previous Articles     Next Articles

Application of Bisoxazoline-grafted Amino Acid Polymer as Chiral Catalytic Center in Asymmetric Henry Reaction

ZHU Jipeng1, LIU Runhui2,3,4, SONG Gonghua1()   

  1. 1.School of Pharmacy
    2.State Key Laboratory of Bioreactor Engineering
    3.Key Laboratory for Ultrafine Materials of Ministry of Education,School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China
    4.East China University of Science and Technology Shenzhen Research Institute,Shenzhen 518063,China
  • Received:2022-08-26 Online:2023-04-10 Published:2022-10-12
  • Contact: SONG Gonghua E-mail:ghsong@ecust.edu.cn
  • Supported by:
    the Fundamental Research Funds for the Central Universities, China and the Free Exploring Basic Research Project at Shenzhen Research Institute of East China University of Science and Technology(2021Szvup042)

Abstract:

A series of amino acid polymers with different solubility was prepared through controlling the ratio of L-Glutamic acid-1-ethyl ester to DL-cysteine and the ratio of initiator to monomer in the polymerization process. With the amino acicl polymer as carriers for chiral ligands, a series of bisoxazoline-grafted amino acid polymers was synthesized by the addition reaction between the double bond on the bisoxazoline ligand and the sulfhydryl group on the polymer. The polymers can be used as a recoverable chiral ligand to catalyze asymmetric Henry reaction. The enantiomeric excess(e. e.) value of the reaction is between 50%—90% and the yield is between 67%—95%. The catalyst can be recycled for at least 7 times without reactivation.

Key words: Amino acid polymer, Bisoxazoline, Henry reaction, Asymmetric catalysis

CLC Number: 

TrendMD: