One-Pot Preparation of Propargylamines Catalyzed by Heterogeneous Copper Catalyst Supported on Periodic Mesoporous Organosilica with Ionic Liquid Framework
Coppersupported on periodicmesoporousorganosilica (PMO) with alkylimidazolium frameworks is a highly efficient and recoverable catalyst for the preparation of propargylamines through the three-component coupling reaction of aldehydes, alkynes, and amines. The new catalyst is characterized using N2 adsorption/desorption analysis, transmission electron microscopy (TEM), energy dispersive spectroscopy
A novel gold nanoparticle supportedperiodicmesoporousorganosilica with alkylimidazolium framework, Au@PMO-IL, was shown to be a highly active and recyclable catalyst for three-component coupling reaction of aldehyde, alkyne and amine to give the corresponding propargylamine.
Cu–Ni bimetallic reusable catalyst for synthesis of propargylamines via multicomponent coupling reaction under solvent-free conditions
作者:Suyog V. Katkar、R. V. Jayaram
DOI:10.1039/c4ra06275b
日期:——
A CuâNi bimetallic catalyst has been used as a reusable catalytic system for the multicomponent coupling reaction of aldehydes, phenylacetylene and secondary amines for the synthesis of propargylamines under solvent-free conditions. The reaction did not require any other additives such as an inorganic base. The bimetallic catalyst displayed high activity and gives propargylamines in good to excellent yields. This method provides a wide range of substrate applicability. The catalyst could be magnetically separated and reused without loss in activity.
Gold Nanoparticles Supported on Polyacrylamide Containing a Phosphorus Ligand as an Efficient Heterogeneous Catalyst for Three-Component Synthesis of Propargylamines in Water
Gold nanoparticles supported on a polyacrylamide containing a phosphinite ligand have been synthesized and characterized using different techniques such as TEM, SEM, EDX, XPS, and solid UV analyses. The new material was successfully applied as a heterogeneouscatalyst for the three-component A3 coupling of amines, aldehydes, and alkynes to give propargylamines. Reactions are performed in neat water
已合成并使用不同的技术(如 TEM、SEM、EDX、XPS 和固体紫外分析)表征了负载在含有次膦酸盐配体的聚丙烯酰胺上的金纳米粒子。这种新材料成功地用作胺、醛和炔烃的三组分 A3 偶联得到炔丙胺的多相催化剂。反应在纯水中在 80 °C 下进行,催化剂负载仅为 0.05 mol%。多相催化剂在连续七次运行期间可回收,活性略有下降。
Efficient Method for the Synthesis of Propargylamines Using a Biomaterial Containing Copper Nanoparticles as Impressive and Reusable Nanocatalyst
for the preparation of propargylamines by three component reaction of secondary amines, aldehydes and alkynes. The catalyst can be successfully recycled and reused without significant loss of efficiency in 4 reaction runs. The procedure described here offers an easy and practical method accompanied by higher yields, and environmentallybenign system.