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
Glaser–Hay hetero-coupling in a bimetallic regime: a Ni(<scp>ii</scp>)/Ag(<scp>i</scp>) assisted base, ligand and additive free route to selective unsymmetrical 1,3-diynes
作者:Anuradha Mohanty、Sujit Roy
DOI:10.1039/c7cc05605b
日期:——
A Ni(OAc)2/Ag(OTf) catalysed coupling of aryl alkynes and propargylic alcohol/ether/ester gave the corresponding unsymmetrical 1,3-diynes in good to excellent yields.