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Catalysts 2018, 8(9), 404;

Covalent Organic Frameworks: Promising Materials as Heterogeneous Catalysts for C-C Bond Formations

School of Science, Beijing Technology and Business University, Beijing 100048, China
Basic Experimental Center for Natural Science, University of Science and Technology Beijing, Beijing 100083, China
Key Laboratory of Photochemistry, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Authors to whom correspondence should be addressed.
Received: 28 August 2018 / Revised: 13 September 2018 / Accepted: 15 September 2018 / Published: 19 September 2018
(This article belongs to the Special Issue Active Sites in Catalytic Reaction)
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Covalent organic frameworks (COFs) are defined as highly porous and crystalline polymers, constructed and connected via covalent bonds, extending in two- or three-dimension. Compared with other porous materials such as zeolite and active carbon, the versatile and alternative constituent elements, chemical bonding types and characteristics of ordered skeleton and pore, enable the rising large family of COFs more available to diverse applications including gas separation and storage, optoelectronics, proton conduction, energy storage and in particular, catalysis. As the representative candidate of next-generation catalysis materials, because of their large surface area, accessible and size-tunable open nano-pores, COFs materials are suitable for incorporating external useful active ingredients such as ligands, complexes, even metal nanoparticles deposition and substrate diffusion. These advantages make it capable to catalyze a variety of useful organic reactions such as important C-C bond formations. By appropriate pore-engineering in COFs materials, even enantioselective asymmetric C-C bond formations could be realized with excellent yield and ee value in much shorter reaction time compared with their monomer and oligomer analogues. This review will mainly introduce and discuss the paragon examples of COFs materials for application in C-C bond formation reactions for the organic synthetic purpose. View Full-Text
Keywords: covalent organic frameworks; heterogeneous catalysts; organic synthesis; C-C bond formation covalent organic frameworks; heterogeneous catalysts; organic synthesis; C-C bond formation

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Ma, D.; Wang, Y.; Liu, A.; Li, S.; Lu, C.; Chen, C. Covalent Organic Frameworks: Promising Materials as Heterogeneous Catalysts for C-C Bond Formations. Catalysts 2018, 8, 404.

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