Regioselective synthesis of [1,2,3]-triazoles catalyzed by Cu(I) generated in situ from Cu(0) nanosize activated powder and amine hydrochloride salts
作者:Hernán A. Orgueira、Demosthenes Fokas、Yuko Isome、Philip C.-M. Chan、Carmen M. Baldino
DOI:10.1016/j.tetlet.2005.02.127
日期:2005.4
A straightforward and efficient method for the regioselective synthesis of functionalized 1,4-disubstituted [1,2,3]-triazoles, from terminal alkynes and azides, has been established utilizing Cu(0) as the source of the catalytic species. The presumed catalytic Cu(I) species is generated by the combination of 10 mol % copper nanosize activated powder and 1 equiv of an amine hydrochloride salt. The addition
利用Cu(0)作为催化物质的来源,已经建立了一种从末端炔烃和叠氮化物区域选择性合成官能化的1,4-二取代[1,2,3]-三唑的简单有效的方法。推测的催化Cu(I)种类是由10 mol%的铜纳米级活性粉末和1当量的胺盐酸盐组成的。将胺盐酸盐加到反应混合物中增强了铜金属的溶解,并随后促进了区域选择性环加成所需的Cu(I)-乙炔中间体的形成。