A copper(<scp>ii</scp>)–thioamide combination as a robust heterogeneous catalytic system for green synthesis of 1,4-disubstituted-1,2,3-triazoles under click conditions
An efficient and practical synthesis of 1,4-disubstituted-1,2,3-triazoles underclickconditions using a copper(II)–thioamide combination as an efficient heterogeneous catalyst is disclosed. Mild reactionconditions and high yields make this method an attractive option for the preparation of triazole derivatives. The key to this procedure was the generation of Cu(I) required for the azide-alkyne cycloaddition
CuI/Et2NH-Catalyzed One-Pot Highly Efficient Synthesis of 1,4-Disubstituted 1,2,3-Triazoles in Green Solvent Glycerol
作者:Yongde Zhao、Shengqiang Guo、Yang Zhou、Bencai Dai、Cuimeng Huo、Changchun Liu
DOI:10.1055/s-0036-1591557
日期:2018.6
temperature. A concise one-pot three-component reaction of organic halides, terminal acetylenes, and sodium azide provided an efficient route for the synthesis of 1,2,3-triazoles. A variety of 1,2,3-triazoles were prepared in good to excellent yields with green solvent glycerol. This procedure used CuI and diethylamine, which are two easily available reagents as the new catalytic system at room temperature