Asymmetric Alternating Copolymerization of Meso-epoxides and Cyclic Anhydrides: Efficient Access to Enantiopure Polyesters
发表时间：2019-03-13
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- 论文类型：
- 期刊论文
- 第一作者：
- Li, Jie
- 通讯作者：
- Lu, XB (reprint author), Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China.
- 合写作者：
- Liu, Ye,Ren, Wei-Min,Lu, Xiao-Bing
- 发表时间：
- 2016-09-14
- 发表刊物：
- JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
- 收录刊物：
- SCIE、EI、PubMed、Scopus
- 文献类型：
- J
- 卷号：
- 138
- 期号：
- 36
- 页面范围：
- 11493-11496
- ISSN号：
- 0002-7863
- 摘要：
- Synthesis of stereoregular polyesters with main-chain chirality was achieved for the first time by the asymmetric copolymerization of meso-epoxides and cyclic anhydrides using catalyst systems based on enantiopure bimetallic, complexes. The combination of the biphenol-linked dinuclear aluminum complex with tert-butyl groups-in the phenolate ortho-positions and a nucleophilic co-catalyst was found to be more efficient in catalyzing this asymmetric copolymerization, affording enantiomerically enriched polyesters (up to 91% ee) with completely alternating structure and narrow molecular weight distribution. It was discovered that the isotactic-enriched poly(cyclopentene phthalate) is a typical semicrystalline material with a melting endothermic peak at 221 degrees C. This study is expected to provide a promising route to prepare various stereoregular polyesters having a wide variety of physical properties and degradability.
- 是否译文：
- 否
