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,Green Chemistry

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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
Green Chemistry ( IF 9.3 ) Pub Date : 2018-10-03 , DOI: 10.1039/c8gc02611d
Yi Han _{1,

2,

3,

4,

5} , Mo Zhang _{1,

2,

3,

4,

5} , Ya-Qing Zhang _{1,

2,

3,

4,

5} , Zhan-Hui Zhang _{1,

2,

3,

4,

5}

Affiliation

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.

中文翻译：

固定在共价有机骨架上的铜：有效且可回收的异质催化剂，用于芳基硼酸和胺的Chan-Lam偶联反应

具有高热稳定性和化学稳定性的聚酰亚胺共价有机骨架（PI-COF）可以很容易地从市售和廉价的试剂中制备，并被用作异质铜的有效载体。结果表明，所获得的Cu @ PI-COF是一种高活性的非均相催化剂，可以在不使用任何碱或添加剂的情况下，有效地促进开放烧瓶中芳基硼酸和胺的Chan-Lam偶联反应。另外，可以通过简单的过滤容易地从反应混合物中回收催化剂，并重复使用至少八个循环，而没有结构和催化活性的任何可观察到的变化。

更新日期：2018-10-30

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