Highly active binuclear Cu(II) catalyst bearing an unsymmetrical bipyridine-pyrazole-amine ligand for the azide-alkyne cycloaddition reaction
作者:Baofeng Han、Xiao Xiao、Lan Wang、Wenjing Ye、Xiaoping Liu
DOI:10.1016/s1872-2067(15)61121-4
日期:2016.9
groups often show special characteristics. In this paper, a well-defined dinuclear Cu (Ⅱ) complex bearing an unsymmetrical bipyridine-pyrazole-amine ligand was synthesized by the condensation of N-H to release H 2 O. Using sodium L-ascorbate as a reductant, the binuclear complex showed excellent activity in 1,3-dipolar cycloaddition reactions between alkynes and azides to obtain 1,4-disubstituted triazoles
含有NH基团的配体通常表现出特殊的特性。在本文中,通过NH 缩合释放H 2 O 合成了带有不对称双吡啶-吡唑-胺配体的明确定义的双核Cu (II) 配合物。使用L-抗坏血酸钠作为还原剂,该双核配合物表现出优异的性能。在炔烃和叠氮化物之间的 1,3-偶极环加成反应中的活性,以 95%-99% 的分离产率获得 1,4-二取代的三唑。