A CuO–CeO2 nanocomposite in the presence of amberlite-supported azide has been used for the click synthesis of 1,4-disubstituted-1,2,3-triazoles in good yields. This catalyst can be reused several times without any significant decrease in the catalytic activity.
Polymer-Supported Azide and Copper(I): Green Reusable Reagent and Catalyst for Click Cyclization
作者:Jalal Albadi、Mosadegh Keshavarz
DOI:10.1080/00397911.2012.671434
日期:2013.8.3
polymer-supported copper(I) iodide catalyst and macroporous polymer-supported azide reagent were used to simplify the synthesis of 1,4-disubstituted-1H-1,2,3-triazoles from α-bromo ketones/amides/esters following green chemistry principles. This new one-pot protocol facilitates the workup of the reaction and provides the products in short times and excellent yields. Heterogeneous catalyst and reagent can be reused
Copper iodide nanoparticles on poly(4-vinyl pyridine): A new and efficient catalyst for multicomponent click synthesis of 1,4-disubstituted-1,2,3-triazoles in water
Polymer supported nanoparticles of copper(I) iodide is reported as a new, efficient and recyclable catalyst for the regioselective multicomponent synthesis of 1,4-disubstituted-1H-12,3-triazoles from alpha-halo ketones, sodium azide and terminal alkynes in water. This catalyst can be recovered by simple filtration and recycled up to 8 consecutive runs without losing its efficiency. (C) 2012 Elsevier B.V. All rights reserved.
[bmim]BF4/[Cu(Im12)2]CuCl2 as a novel catalytic reaction medium for click cyclization
Herein, a new application of an ionicliquid containing copper (I), ([Cu(Im12)2]CuCl2), is introduced. This ionicliquid was used as an efficient catalyst for the click cyclization between organic azides and terminal alkynes in various solvents. Then, the mixture of [bmim]BF4/[Cu(Im12)2]CuCl2 was used as a green catalytic medium for the multicomponent click synthesis of 1,4-disubstituted-1H-1,2,3-triazoles