Ligand-accelerating low-loading copper-catalyzed effective synthesis of (E)-1,3-enynes by coupling between vinyl halides and alkynes performed in water
作者:Peng Sun、Hong Yan、Linhua Lu、Defu Liu、Guangwei Rong、Jincheng Mao
DOI:10.1016/j.tet.2013.06.063
日期:2013.8
The useful conjugated enynes could be easily prepared via low-loading (0.0001 mol %) copper-catalyzed coupling between vinyl halides and terminal alkynes. It is noteworthy that this reaction could be preformed in water without using any co-solvents and the desired 1,3-enynes could be obtained with good yields. In the catalytic reaction, ligand-acceleration effect was markable.
有用的共轭烯炔可以通过乙烯基卤化物和末端炔烃之间的低负载(0.0001 mol%)铜催化的偶联容易地制备。值得注意的是,该反应可以在水中进行而无需使用任何助溶剂,并且可以良好的收率获得所需的1,3-烯炔。在催化反应中,配体促进作用是显着的。