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Supramolecular Catalyst Functions in Catalytic Amount: Cucurbit[7]uril Accelerates Click Reaction in Water

文献类型： 外文期刊

作者： Feng, Xuepu 1 ; Zhao, Fen 1 ; Qian, Rui 1 ; Guo, Mengbi 2 ; Yang, Jing 1 ; Yang, Rui 1 ; Meng, DongLing 3 ;

作者机构： 1.Kunming Univ Sci & Technol, Fac Sci, Kunming 650500, Yunnan, Peoples R China

2.Yunnan Acad Agr Sci, Ind Crop Res Inst, Kunming 650205, Yunnan, Peoples R China

3.China Tobacco Guangxi Ind Co Ltd, Technol Ctr, Nanning 53001, Peoples R China

关键词： Click reaction; Cucurbit[7]uril; CuI; Supramolecular catalysis

期刊名称：CHEMISTRYSELECT （ 影响因子：2.109； 五年影响因子：2.054 ）

ISSN： 2365-6549

年卷期： 2021 年 6 卷 40 期

页码：

收录情况： SCI

摘要： Macrocycles have garnered significant interest for their potential utility as supramolecular catalysts in modulating chemical transformations. Here, we report a reusable supramolecular catalytic system to accelerate copper(I) catalyzed Click cycloaddition (CuAAC) reactions in water. Our system comprises of 5 mol % CuI and 0.5 mol % of the supramolecular co-catalyst, cucurbit[7]uril (CB7), which stabilizes and prevents the oxidation of Cu-I. This catalysis can be cycled is that the triazole product or alkyne reactant hardly bind in the cavity of CB7 while there is an interaction between azide reactant and CB7 through molecular recognition. The dual catalysts can be facilely separated from the reaction system. As a result, the catalyst system can be recycled and reused for more than 10 consecutive cycles while maintaining high catalytic activity.

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