Highly active binuclear Cu(Ⅱ) catalyst bearing an unsymmetrical bipyridine-pyrazole-amine ligand for the azide-alkyne cycloaddition reaction

doi:10.1016/S1872-2067(15)61121-4

Chinese Journal of Catalysis ›› 2016, Vol. 37 ›› Issue (9): 1446-1450.DOI: 10.1016/S1872-2067(15)61121-4

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Highly active binuclear Cu(Ⅱ) catalyst bearing an unsymmetrical bipyridine-pyrazole-amine ligand for the azide-alkyne cycloaddition reaction

Baofeng Han, Xiao Xiao, Lan Wang, Wenjing Ye, Xiaoping Liu

Key Laboratory of Structure-Based Drug Design and Discovery(Shenyang Pharmaceutical University), Ministry of Education, Shenyang 110016, Liaoning, China

Received:2016-03-12 Revised:2016-04-18 Online:2016-09-21 Published:2016-09-21
Contact: Wenjing Ye, Xiaoping Liu
Supported by:
This work was supported by the China Postdoctoral Science Foundation(2013M541254), the National Natural Science Foundation of China(21502120), the Program for Innovative Research Team of the Ministry of Education and the Program for Liaoning Innovative Research Team in University.

Abstract

Abstract:

Ligands containing NH groups often show special characteristics. In this paper, a well-defined dinuclear Cu(Ⅱ) complex bearing an unsymmetrical bipyridine-pyrazole-amine ligand was synthesized by the condensation of N-H to release H₂O. Using sodium L-ascorbate as a reductant, the binuclear complex showed excellent activity in 1,3-dipolar cycloaddition reactions between alkynes and azides to obtain 1,4-disubstituted triazoles in 95%-99% isolated yields.

Key words: N-heterocycle ligand, Cu complex, 1,3-Dipolar cycloaddition, Alkynes, Azides

Baofeng Han, Xiao Xiao, Lan Wang, Wenjing Ye, Xiaoping Liu. Highly active binuclear Cu(Ⅱ) catalyst bearing an unsymmetrical bipyridine-pyrazole-amine ligand for the azide-alkyne cycloaddition reaction[J]. Chinese Journal of Catalysis, 2016, 37(9): 1446-1450.

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Highly active binuclear Cu(Ⅱ) catalyst bearing an unsymmetrical bipyridine-pyrazole-amine ligand for the azide-alkyne cycloaddition reaction

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