Highly Regio- and <italic style="font-style: italic">trans</italic>-Selective Ring-opening Metathesis Polymerization of Chiral Aza-norbornene with a Simple Phenylimido-Tungsten Catalyst

Xun Ci; Jing Bai; Yu Wang; Wei You

doi:10.1007/s10118-026-3696-4

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Highly Regio- and trans-Selective Ring-opening Metathesis Polymerization of Chiral Aza-norbornene with a Simple Phenylimido-Tungsten Catalyst

Special Topic: Chirality in Polymers | Updated：2026-08-31

- Highly Regio- and trans-Selective Ring-opening Metathesis Polymerization of Chiral Aza-norbornene with a Simple Phenylimido-Tungsten Catalyst
- Highly Regio- and trans-Selective Ring-opening Metathesis Polymerization of Chiral Aza-norbornene with a Simple Phenylimido-Tungsten Catalyst
- Chinese Journal of Polymer Science 2026年44卷第9期页码：2854-2861
- Affiliations：
  
  a.Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
  b.University of Chinese Academy of Sciences, Beijing 100049, China
- Author bio：
  
  weiyou@iccas.ac.cn (Y.W.)
  ywang507@iccas.ac.cn (W.Y.)
- Funds：
  
  This work was financially supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (No. XDC0270301). We also thank Prof. Yan Xu (Peking University) and Yisong Wang (Peking University) to provide the CyRu1 catalyst for polymerization, and Tao Yang (ICCAS) to assist synthesizing the W-based catalyst.;The authors declare no interest conflict.Electronic supplementary information (ESI) is available free of charge in the online version of this article at http://doi.org/10.1007/s10118-026-3696-4.The data that support the findings of this study are available from the corresponding author upon reasonable request.
- DOI：10.1007/s10118-026-3696-4
  中图分类号：
- 收稿：2026-02-27，
  
  录用：2026-04-02，
  
  网络首发：2026-06-24，
  
  纸质出版：2026-09-05
- Accepted：
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Ci, X.; Bai, J.; Wang, Y.; You, W. Highly regio- and trans-selective ring-opening metathesis polymerization of chiral aza-norbornene with a simple phenylimido-tungsten catalyst. Chinese J. Polym. Sci. 2026, 44, 2854–2861

Xun Ci, Jing Bai, Yu Wang, et al. Highly Regio- and trans-Selective Ring-opening Metathesis Polymerization of Chiral Aza-norbornene with a Simple Phenylimido-Tungsten Catalyst[J]. Chinese Journal of Polymer Science, 2026, 44(9): 2854-2861. DOI: 10.1007/s10118-026-3696-4.
Ci, X.; Bai, J.; Wang, Y.; You, W. Highly regio- and trans-selective ring-opening metathesis polymerization of chiral aza-norbornene with a simple phenylimido-tungsten catalyst. Chinese J. Polym. Sci. 2026, 44, 2854–2861 DOI： 10.1007/s10118-026-3696-4.

Xun Ci, Jing Bai, Yu Wang, et al. Highly Regio- and trans-Selective Ring-opening Metathesis Polymerization of Chiral Aza-norbornene with a Simple Phenylimido-Tungsten Catalyst[J]. Chinese Journal of Polymer Science, 2026, 44(9): 2854-2861. DOI: 10.1007/s10118-026-3696-4. DOI：

摘要

The ring-opening metathesis polymerization (ROMP) of a chiral monomer using a tungsten catalyst produced a highly head-to-head regio- and

trans

-selective polymer

unlike the

cis

-selective polymers from ruthenium-based catalysts. The varied stereochemistry configurations led to distinct optical activities and chiral expression of polymers derived from the same monomer.

Abstract

Stereochemical control in ring-opening metathesis polymerization (ROMP) is essential for tailoring polymer properties. While several existing studies have achieved tunable regioselectivity with asymmetric monomers through catalyst design

yet achieving high

trans

-selectivity alongside defined regiochemistry remains challenging. Here we report the ROMP of a chiral aza-norbornene monomer derived from Vince lactam using a readily prepared phenylimido tungsten catalyst. The resulting polymer exhibited high head-to-head regioselectivity and high

trans

-selectivity

which stands in stark contrast to our previous work where Ru-based catalysts afforded predominantly

cis

-selective polymers from the same monomer. Moreover

together with our previous

ly reported polymers

specific rotation measurements and circular dichroism spectra demonstrated that varied stereochemical configurations significantly influenced the optical activity and chiral expression of polymers derived from the same chiral monomer. This work provides a complementary approach to stereochemical control in ROMP

offering valuable insights for design and synthesis of structurally well-defined chiral polymers.

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Highly Regio- and trans-Selective Ring-opening Metathesis Polymerization of Chiral Aza-norbornene with a Simple Phenylimido-Tungsten Catalyst

Highly Regio- and trans-Selective Ring-opening Metathesis Polymerization of Chiral Aza-norbornene with a Simple Phenylimido-Tungsten Catalyst

DOI：10.1007/s10118-026-3696-4

摘要

Abstract

关键词

Keywords

references