Chinese Journal of Catalysis ›› 2023, Vol. 52: 207-216.DOI: 10.1016/S1872-2067(23)64499-7

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Construction of modularized catalytic system for transfer hydrogenation: Promotion effect of hydrogen bonds

Xin Liua,c, Maodi Wanga,c, Yiqi Rena,c, Jiali Liua,c, Huicong Daib, Qihua Yangb,*()   

  1. aState Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
    bKey Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang, China
    cUniversity of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2023-06-29 Accepted:2023-08-02 Online:2023-09-18 Published:2023-09-25
  • Contact: Qihua Yang
  • Supported by:
    National Natural Science Foundation of China(22272164);National Natural Science Foundation of China(21972134);Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang(2022R01007)

Abstract:

The construction of enzyme-mimicking catalysts is a crucial route for achieving green chemical transformations; however, integrating multiple sites into one catalyst is challenging. Herein, a facile method is reported to combine different active sites by constructing a modularized catalytic system. A modularized catalytic system composed of covalent organic frameworks (COFs) and Cu2Cr2O5 exhibits remarkable efficiency in the transfer hydrogenation of cinnamaldehyde, with a selectivity of over 99% towards cinnamyl alcohol, surpassing the reaction rate of Cu2Cr2O5 by more than fourfold. The results of the mechanistic study and density functional theory calculations suggest that the enhanced activity of the modularized catalytic system is derived from the hydrogen bonds between the COFs and isopropyl alcohol, which promote isopropyl alcohol dehydrogenation and hydride transfer. In addition, the modularized catalytic system is efficient for various saturated and unsaturated aldehydes and could be replaced by different submodules. This study demonstrates the efficiency of a modularized catalytic system for mimicking the functions of enzymes in catalysis.

Key words: Modularized catalytic system, Transfer hydrogenation, Hydrogen bond, Enzyme-mimic catalyst, Covalent organic framework