A Simple One-Pot Procedure for the Direct Homocoupling of Terminal Alkynes Promoted by Copper Nanoparticles
摘要:
The reaction of different terminal alkynes with readily prepared copper(0) nanoparticles led to the formation of the corresponding symmetrical 1,4-disubstituted 1,3-diynes in good yield. No palladium, ligands, or oxidant additives were needed, For aliphatic terminal alkynes, the use of sodium carbonate as base markedly improved the reaction rate and allowed the use of a substoichiometric amount of the copper nanoparticles.
The reaction of different terminal alkynes with readily prepared copper(0) nanoparticles led to the formation of the corresponding symmetrical 1,4-disubstituted 1,3-diynes in good yield. No palladium, ligands, or oxidant additives were needed, For aliphatic terminal alkynes, the use of sodium carbonate as base markedly improved the reaction rate and allowed the use of a substoichiometric amount of the copper nanoparticles.
10.1002/chem.202401999
作者:Su, Zhenjie、Wang, Shaozhong
DOI:10.1002/chem.202401999
日期:——
The cooperative Lewis- and Brønsted acid catalysis enables a multicomponent synthesis of 3(2H)-furanones from 1,3-diynes, alkyl glyoxylates and water, in which a highly chemo-, regio- and stereoselective alkyne-carbonyl cross metathesis of 1,3-diynes has been developed and suggested as the initial step of the annulation.