Stereoselective Ring-opening Polymerization of <italic style="font-style: italic">rac</italic>-Lactide by Bulky Chiral and Achiral <italic style="font-style: italic">N</italic>-heterocyclic Carbenes

Hui Li; Bai-Ru Ai; Miao Hong

doi:10.1007/s10118-018-2071-5

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Stereoselective Ring-opening Polymerization of rac-Lactide by Bulky Chiral and Achiral N-heterocyclic Carbenes

Articles | Updated：2021-02-18

- Stereoselective Ring-opening Polymerization of rac-Lactide by Bulky Chiral and Achiral N-heterocyclic Carbenes
- Stereoselective Ring-opening Polymerization of rac-Lactide by Bulky Chiral and Achiral N-heterocyclic Carbenes
- Chinese Journal of Polymer Science 2018年36卷第2期页码：231-236
- Affiliations：
  
  a.Key Laboratory of Marine Materials and Related Technologies, Key Laboratory of Marine Materials and Protective Technologies of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
  b.University of Chinese Academy of Sciences, Beijing 100049, China
  c.State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
- Author bio：
  
  Miao Hong, miaohong@sioc.ac.cn
- Funds：
- DOI：10.1007/s10118-018-2071-5
  中图分类号：
- 收稿：2017-09-26，
  
  录用：2017-10-21，
  
  网络首发：2017-11-27，
  
  纸质出版：2018-02-05
- Accepted：
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Hui Li, Bai-Ru Ai, Miao Hong. Stereoselective Ring-opening Polymerization of rac-Lactide by Bulky Chiral and Achiral N-heterocyclic Carbenes[J]. Chinese Journal of Polymer Science, 2018,36(2):231-236. DOI: 10.1007/s10118-018-2071-5.

Hui Li, Bai-Ru Ai, Miao Hong. Stereoselective Ring-opening Polymerization of rac-Lactide by Bulky Chiral and Achiral N-heterocyclic Carbenes[J]. Chinese Journal of Polymer Science, 2018, 36(2): 231-236. DOI: 10.1007/s10118-018-2071-5.
Hui Li, Bai-Ru Ai, Miao Hong. Stereoselective Ring-opening Polymerization of rac-Lactide by Bulky Chiral and Achiral N-heterocyclic Carbenes[J]. Chinese Journal of Polymer Science, 2018,36(2):231-236. DOI: 10.1007/s10118-018-2071-5. DOI：

Hui Li, Bai-Ru Ai, Miao Hong. Stereoselective Ring-opening Polymerization of rac-Lactide by Bulky Chiral and Achiral N-heterocyclic Carbenes[J]. Chinese Journal of Polymer Science, 2018, 36(2): 231-236. DOI: 10.1007/s10118-018-2071-5. DOI：

摘要

Abstract

Despite the extraordinary success has been achieved in metal catalyst-promoted stereoselective ring-opening polymerization (ROP) of

rac

-lactide (

rac

-LA)

well-controlled stereoselective

rac

-LA ROP by organic catalyst still remains a scientific challenge. Here we report our investigations into organocatalytic stereoselective ROP of

rac

-LA by utilizing novel bulky chiral and achiral

-heterocyclic carbenes (NHC)

3-bis-(1'-naphthylethyl)imidazolin-2-ylidene. The effect of polymerization conditions (

. solvent

temperature

alcohol initiator) on ROP behavior by these bulky NHCs has been fully studied

leading to the formation of isotactic-rich stereoblock polylactide (

=0.81) under optimized conditions with high activity (Conv.=98% in 30 min) and narrow molecular weight dispersity (

=1.05).

关键词

Keywords

references

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Stereoselective Ring-opening Polymerization of rac-Lactide by Bulky Chiral and Achiral N-heterocyclic Carbenes

DOI：10.1007/s10118-018-2071-5

摘要

Abstract

关键词

Keywords

references