Crystalline Olefin-Linked Chiral Covalent Organic Frameworks as a Platform for Asymmetric Catalysis. 2024

Ting He, and Ivan Keng Wee On, and Shuai Bi, and Ziyue Huang, and Jingjing Guo, and Zhifang Wang, and Yanli Zhao
School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.

The construction of olefin-linked chiral covalent organic frameworks (COFs) with high crystallinity is highly desirable while remains great challenge due to the poor reversibility of the formation reaction for the olefin linkages during the in situ structural self-healing process. Herein, we successfully synthesized two sets of enantiomeric olefin-linked COFs. The chiral catalytic groups are uniformly distributed on the pore walls of COFs, resulting in the full exposure of catalytic sites to the reactants in asymmetric catalysis. The as-prepared (R)/(S)-CCOF8 exhibits excellent catalytic performance with exceeding 99 % enantiomeric excess in the enantioselective electrophilic amination reaction. Moreover, the heterogeneous chiral catalysts are conveniently recycled and could maintain the performance after ten catalytic cycles. Our findings expand the scope to construct stable and crystalline chiral COFs for the asymmetric catalysis.

UI MeSH Term Description Entries

Related Publications

Ting He, and Ivan Keng Wee On, and Shuai Bi, and Ziyue Huang, and Jingjing Guo, and Zhifang Wang, and Yanli Zhao
May 2019, Journal of the American Chemical Society,
Ting He, and Ivan Keng Wee On, and Shuai Bi, and Ziyue Huang, and Jingjing Guo, and Zhifang Wang, and Yanli Zhao
November 2015, Nature chemistry,
Ting He, and Ivan Keng Wee On, and Shuai Bi, and Ziyue Huang, and Jingjing Guo, and Zhifang Wang, and Yanli Zhao
June 2021, Small (Weinheim an der Bergstrasse, Germany),
Ting He, and Ivan Keng Wee On, and Shuai Bi, and Ziyue Huang, and Jingjing Guo, and Zhifang Wang, and Yanli Zhao
June 2022, Angewandte Chemie (International ed. in English),
Ting He, and Ivan Keng Wee On, and Shuai Bi, and Ziyue Huang, and Jingjing Guo, and Zhifang Wang, and Yanli Zhao
October 2010, Nature chemistry,
Ting He, and Ivan Keng Wee On, and Shuai Bi, and Ziyue Huang, and Jingjing Guo, and Zhifang Wang, and Yanli Zhao
November 2020, Chemistry (Weinheim an der Bergstrasse, Germany),
Ting He, and Ivan Keng Wee On, and Shuai Bi, and Ziyue Huang, and Jingjing Guo, and Zhifang Wang, and Yanli Zhao
June 2017, Journal of the American Chemical Society,
Ting He, and Ivan Keng Wee On, and Shuai Bi, and Ziyue Huang, and Jingjing Guo, and Zhifang Wang, and Yanli Zhao
December 2023, Chemical communications (Cambridge, England),
Ting He, and Ivan Keng Wee On, and Shuai Bi, and Ziyue Huang, and Jingjing Guo, and Zhifang Wang, and Yanli Zhao
August 2020, Journal of the American Chemical Society,
Ting He, and Ivan Keng Wee On, and Shuai Bi, and Ziyue Huang, and Jingjing Guo, and Zhifang Wang, and Yanli Zhao
June 2017, Journal of the American Chemical Society,
Copied contents to your clipboard!