高等学校化学学报 ›› 2019, Vol. 40 ›› Issue (8): 1628.doi: 10.7503/cjcu20190141

• 有机化学 • 上一篇    下一篇

以联萘酚为侧基的手性聚合物在不对称环氧反应中的应用

刘凤,李琴芳,欧阳昆冰(),阳年发()   

  1. 湘潭大学化学学院, 环境友好化学与应用省部共建教育部重点实验室, 湘潭 411105
  • 收稿日期:2019-03-07 出版日期:2019-08-10 发布日期:2019-07-12
  • 通讯作者: 欧阳昆冰,阳年发 E-mail:kbouyang@xtu.edu.cn;nfyang@xtu.edu.cn
  • 基金资助:
    湖南省教育厅一般项目(17C1524);湘潭大学博士科研启动基金资助(15QDZ52)

Application of Two Chiral BINOL Polymers in Asymmetric Epoxidation Reaction †

LIU Feng,LI Qinfang,OUYANG Kunbing(),YANG Nianfa()   

  1. Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
  • Received:2019-03-07 Online:2019-08-10 Published:2019-07-12
  • Contact: OUYANG Kunbing,YANG Nianfa E-mail:kbouyang@xtu.edu.cn;nfyang@xtu.edu.cn
  • Supported by:
    † Supported by the General Project of the Education Department of Hunan Province, China(17C1524);the Foundation for Young Scholars of Xiangtan University of Science & Technology(15QDZ52)

摘要:

合成了2种以联萘酚为侧基的手性聚合物, 将其用作手性诱导剂, 与ZnEt2发生配位反应形成自负载催化剂, 进而应用到α,β-不饱和酮的不对称催化反应中. 在温和的反应条件下, 可获得高产率和良好对映选择性(e.e.值高达99%)的目标产物. 回收的聚合物经4或5次循环利用后, 催化活性无明显降低.

关键词: 联萘酚, 手性聚合物, 查耳酮, 不对称环氧化, ZnEt2

Abstract:

Two chiral polymers based on binaphthol(BINOL) were synthesized. The polymer can be used as a chiral inducer to coordinate with ZnEt2 to form a recoverable self-supporting catalyst, which could be used in the asymmetric catalytic reaction of α,β-unsaturated ketones. The target products of high yield and good enantioselectivity(e.e. value up to 99%) can be obtained under mild conditions. The catalytic activity was not reduced significantly after 4 or 5 cycles of recovery of the recovered polymers.

Key words: 1,1'-Bi-2-naphthol, Chiral polymer, Aromatic ketone, Asymmetric epoxidation, ZnEt2

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