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Copper immobilized at a covalent organic framework: an efficient and recyclable heterogeneous catalyst for the Chan–Lam coupling reaction of aryl boronic acids and amines

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Abstract

A polyimide covalent organic framework (PI-COF) with high thermal and chemical stabilities has been readily prepared from commercially available and inexpensive reagents and was employed as an effective support for heterogeneous copper. It was demonstrated that the obtained Cu@PI-COF is a highly active heterogeneous catalyst which can effectively promote the Chan–Lam coupling reaction of aryl boronic acids and amines in an open flask without the aid of any base or additive. In addition, the catalyst could be readily recovered from the reaction mixture by simple filtration and reused for at least eight cycles without any observable change in structure and catalytic activity.

Graphical abstract: Copper immobilized at a covalent organic framework: an efficient and recyclable heterogeneous catalyst for the Chan–Lam coupling reaction of aryl boronic acids and amines

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Publication details

The article was received on 17 Aug 2018, accepted on 02 Oct 2018 and first published on 03 Oct 2018


Article type: Paper
DOI: 10.1039/C8GC02611D
Citation: Green Chem., 2018, Advance Article
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    Copper immobilized at a covalent organic framework: an efficient and recyclable heterogeneous catalyst for the Chan–Lam coupling reaction of aryl boronic acids and amines

    Y. Han, M. Zhang, Y. Zhang and Z. Zhang, Green Chem., 2018, Advance Article , DOI: 10.1039/C8GC02611D

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