Practical Oxidative Homo- and Heterocoupling of Terminal Alkynes Catalyzed by Immobilized Copper in MCM-41
作者:Ruian Xiao、Ruiya Yao、Mingzhong Cai
DOI:10.1002/ejoc.201200359
日期:2012.8
A practicaloxidativehomo- and heterocoupling of terminalalkynes was achieved in CH2Cl2 at 25 °C by using a 3-(2-aminoethylamino)propyl-functionalized MCM-41-immobilized copper(I) complex (MCM-41–2N-CuI, 1 mol-%) as the catalyst, piperidine (0.1 or 3 equiv.) as the base, and air as the environmentally friendly co-oxidant, yielding a variety of symmetrical and unsymmetrical 1,4-disubstituted 1,3-diynes