在CuI存在下,通过末端炔烃,苄基卤化物/α-卤代酮和叠氮化钠之间的三组分偶联反应,通过一锅法合成1,4-二取代-1H-1,2,3-三唑衍生物已经开发了负载在水中的聚苯胺(Nano CuI / PANI)催化剂上的纳米颗粒。这种非均相催化剂显示出高的催化活性和1,4-区域选择性,可以在水中作为“绿色”溶剂进行点击环化,并且在所有情况下,重复进行五次实验均获得了良好或优异的收率。
An Efficient Three-Component Reaction of Sodium Azide, Haloalkane and Alkyne for the Synthesis of 1, 2, 3-Triazoles Catalyzed by the Bifunctional Ionic Liquid Catalyst Choline Chloride-CuCl in Water
1, 2, 3-Triazoles were synthesized using a one-pot procedure via a threecomponent reaction between an organichalide, sodium azide and alkyne in the presence of an ionic liquid choline chloride-CuCl catalyst. The catalyst can increase the rate of the nucleophilic substitution reaction and showed a high catalytic activity for the [3+2] Huisgen cycloaddition in water. This method is applicable for a
CuO-Nanoparticles Catalyzed Synthesis of 1,4-Disubstituted-1,2,3-Triazoles from Bromoalkenes
作者:John Paul Raj、Dasari Gangaprasad、Murugesan Vajjiravel、Kesavan Karthikeyan、Jebamalai Elangovan
DOI:10.1007/s12039-018-1452-1
日期:2018.5
A novel and efficient protocol involving commercially available CuO nanoparticles (CNP) as catalyst has been developed for the synthesis of 1,2,3-triazoles. A library of 1,4-disubstituted 1,2,3-triazoles has been constructed with good to excellent yields. SynopsisA novel and efficient protocol involving commercially available CuO nanoparticles (CNP) as catalyst has been developed for the synthesis of 1,2,3-triazoles. A library of 1,4-disubstituted 1,2,3-triazoles has been constructed with good to excellent yields.
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。
Synthesis of a heterogeneous Cu(OAc)<sub>2</sub>-anchored SBA-15 catalyst and its application in the CuAAC reaction
作者:Nan Sun、Zhongqi Yu、Hong Yi、Xiayue Zhu、Liqun Jin、Baoxiang Hu、Zhenlu Shen、Xinquan Hu
DOI:10.1039/c7nj04495j
日期:——
A dinuclear Cu(OAc)2-anchored SBA-15 silica was synthesized, confirmed and showed excellent catalytic activity for the azide–alkyne cycloaddition reaction in water.
Cupric oxide nanowires on three-dimensional copper foam for application in click reaction
作者:Chunxia Wang、Fan Yang、Yan Cao、Xing He、Yushu Tang、Yongfeng Li
DOI:10.1039/c7ra00014f
日期:——
effective heterogeneous catalysts for the 1,3-dipolar cycloaddition (CuAAC) reaction without using any additional support and bases. Examination of CuO nanowire catalysts synthesized at various temperatures showed that the use of CuO-600 catalyst was the best choice for the success of the present click reaction. Not only aromatic and heteroaromatic alkynes but also alkylalkynes were catalyzed regioselectively