A highly efficient three-component coupling of aldehyde, terminal alkyne, and amine via C–H activation catalyzed by reusable immobilized copper in organic–inorganic hybrid materials under solvent-free reaction conditions
作者:Pinhua Li、Lei Wang
DOI:10.1016/j.tet.2007.04.032
日期:2007.6
Recycling copper(I) immobilized on organic–inorganic hybrid material behaves as a very efficient heterogeneous catalyst in the three-component Mannich coupling reaction of aldehydes, terminalalkynes, and amines via C–H activation to afford the corresponding products in good to excellent yields under solvent-free reaction conditions.
Single and double A3-coupling (aldehyde-amine-alkyne) reaction catalyzed by an air stable copper(I)-phosphole complex
作者:José Ricardo Cammarata、Rocío Rivera、Franmerly Fuentes、Yomaira Otero、Edgar Ocando-Mavárez、Alejandro Arce、Juan M. Garcia
DOI:10.1016/j.tetlet.2017.09.031
日期:2017.10
An air stable copper(I)-phosphole complex, [CuCl2,5-bis(2-thienyl)-1-phenylphosphole}2] (1), was utilized as a catalyst in single and double A3-coupling reactions for preparing mono- and bi-propargylamines. A variety of aldehydes, amines and terminalalkynes were tested. Most of these reactions led to formation of the expected propargylamines in good yields using low amounts catalyst and obviating
Copper–birhodanine complex immobilized on Fe
<sub>3</sub>
O
<sub>4</sub>
nanoparticles: DFT studies and heterogeneous catalytic applications in the synthesis of propargylamines in aqueous medium
作者:Manuchehr Rezaei、Khaled Azizi、Kamal Amani
DOI:10.1002/aoc.4120
日期:2018.3
Heterogeneous magnetic nanocatalyst, Fe3O4@SiO2–Ligand–Cu (II) MNPs, reveals high catalytic performance within the synthesis of propargylamines using the multicomponent coupling reaction of aldehydes, phenylacetylene and secondary amines in water as a solvent. The substantial feature of this organic–inorganic hybridmagnetic nanocatalyst is the capability of straightforward separation of the reaction
非均相磁性纳米催化剂Fe 3 O 4 @SiO 2-配体-铜(II)MNPs在醛基,苯乙炔和仲胺在水中作为溶剂的多组分偶联反应中,在炔丙基胺的合成中显示出较高的催化性能。这种有机-无机杂化磁性纳米催化剂的主要特征是能够通过外部磁体直接分离反应混合物,该磁体被回收十次而不会显着降低催化活性。这种方法还具有其他优势,例如服从于绿色化学原理,并且避免使用昂贵且有害的有机溶剂。为了研究Birhodanine衍生物-铜(II)配合物的稳定性和实际结构,还进行了DFT计算。
Thiolate-protected Gold Nanoclusters Au<sub>25</sub>(phenylethanethiol)<sub>18</sub>: An Efficient Catalyst for the Synthesis of Propargylamines from Aldehydes, Amines, and Alkynes
In this study, we report a thiolate-protected Au nanocluster, Au25(phenylethanethiol)18 [Au25(PET)18], which serves as an efficient catalyst by a three-component coupling reaction (A3 reaction) of aldehydes, amines, and alkynes to give the corresponding propargylamines in good to excellent yields.
在这项研究中,我们报告了一种硫醇盐保护的 Au 纳米团簇 Au25(苯基乙硫醇)18 [Au25(PET)18],它通过醛、胺和炔的三组分偶联反应(A3 反应)作为一种有效的催化剂以良好至极好的收率得到相应的炔丙胺。
Copper-based catalysts derived from salen-type ligands: synthesis of 5-substituted-1<i>H</i>-tetrazoles <i>via</i> [3+2] cycloaddition and propargylamines <i>via</i> A<sup>3</sup>-coupling reactions
spectroscopic studies. Molecular structures of complexes 1, 2 and 4 were determined by X-ray crystallography. Copper complexes (1-4) were employed as a catalyst for the [3+2] cycloaddition and A3-couplingreactions. A mutual approach of salen-type ligands and metal via active participation of ligands allow to achieve the catalytic reactions. Reaction pathways were proposed and possible intermediate species