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Cu(I) Coordination Polymers (CPs) as Tandem Catalysts for Three-component Sequential Click/Alkynylation Cycloaddition Reaction in Regiocontrol

Abstract

To expand coordination polymers (CPs) as solid catalysts to selectively catalyze the three-component tandem click/alkynylation reaction for their fully substituted triazoles skeletons, two Cu(I)-based CPs (CuI-CPs), [CuBr(TPB)]n (1) and [Cu3I3(TPB)2]n (2) (TPB = N,N,N-tri(3-pyridinyl)-1,3,5-benzenetricarboxamine) have been prepared. Because of the template effect of anions (Br- and I-), the structure of compounds is regulated under solvothermal conditions. CPs 1 exhibited one-dimensional (1D) chain, while the double strands framework with Cu3I3 cluster platform was observed in 2. Futhermore, the different product selectivity of catalyzing terminal alkynes, benzyl azide and bromoalkyne to synthesize triazoles skeletons has been caused by the significantly structural diversity of 1 and 2. The distinct structural feature of 2 endows it unique multinuclear platforms (Cu3I3) and reaction pathways to promote the three-component tandem click/alkynylation cycloaddition reaction. As a result, 2 can be a candidate for outstanding catalyst for sequential Click/Alkynylation cycloaddition, while 1 can efficiently catalyze the generation of click products.

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Publication details

The article was received on 10 Oct 2018, accepted on 05 Nov 2018 and first published on 06 Nov 2018


Article type: Paper
DOI: 10.1039/C8DT04067B
Citation: Dalton Trans., 2018, Accepted Manuscript
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    Cu(I) Coordination Polymers (CPs) as Tandem Catalysts for Three-component Sequential Click/Alkynylation Cycloaddition Reaction in Regiocontrol

    H. Hou, X. Guo, C. Huang, H. Yang, C. Z. Shao, K. Gao, N. Qin, G. Li and J. Wu, Dalton Trans., 2018, Accepted Manuscript , DOI: 10.1039/C8DT04067B

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