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Relevant academic research and scientific papers

Cu-grafted mesoporous organic polymer: A new recyclable nanocatalyst for multi-component, N-arylation and S-arylation reactions

A new mesoporous Cu-MPTA-1 nanocatalyst has been synthesized via a simple and facile in situ radical polymerization of triallylamine in the presence of an organic-organic self-assembly of anionic surfactant SDS, followed by grafting of Cu(ii) at room temperature under an inert atmosphere. This nanomaterial has been characterized by elemental analysis, powder X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), UV-vis diffuse reflectance spectroscopy (DRS), thermogravimetric analysis (TGA), N2 adsorption-desorption studies, X-ray photoelectron spectroscopy (XPS) and EPR spectroscopy. Cu-MPTA-1 acts as an efficient heterogeneous nanocatalyst exhibiting a high catalytic activity for N-arylation and S-arylation reactions using water as a green solvent and also exhibits an excellent catalytic activity for the one-pot synthesis of propargylamines via a three component coupling of an alkyne, an amine and an aldehyde at room temperature. Moreover, the catalyst is easily recoverable and can be reused six times without an appreciable loss of catalytic activity in the three component coupling reaction. The highly dispersed Cu(ii) sites in the Cu-grafted mesoporous polymer could be responsible for the observed high activities of the Cu-MPTA-1 catalyst in the coupling reactions. No evidence of leached Cu from the catalyst during the course of the reaction has been observed, suggesting true heterogeneity in the catalytic process. The Royal Society of Chemistry.

Ionic liquid assisted silver-catalyzed one-pot A3-coupling reactions for the synthesis of propargylamines

A series of ionic liquids with different cations and anions were synthesized and their performances for the silver catalyzed one-pot A3-coupling reactions were investigated. The selection showed that the combination of AgNO3 and ioni

The functional ion liquid multi-component reaction to promote the synthesis of propargyl amine compounds (by machine translation)

The invention discloses a functional ionic liquid to promote multi-component reaction synthesizing propargyl amine compounds, which belongs to the propargyl amines technical field of the synthesis of the compounds. Technical proposal of the invention poin

Excellent catalytic activity of magnetically recoverable Fe3O4-graphene oxide nanocomposites prepared by a simple method

An Fe3O4-graphee oxide nanocomposite has been synthesized via a chemical reaction with a magnetite particle size of 18-25 nm. The resulting nanocomposite can be easily manipulated by an external magnetic field, exhibits excellent cat

Synthesis of silver-graphene nanocomposite and its catalytic application for the one-pot three-component coupling reaction and one-pot synthesis of 1,4-disubstituted 1,2,3-triazoles in water

A graphene based composite with silver nanoparticles has been synthesized via a simple chemical route and its catalytic activity has been tested for multi-component reactions and click reaction in a one-pot approach. This silver-graphene nanocomposite sho

A one-step method to produce graphene-Fe3O4 composites and their excellent catalytic activities for three-component coupling of aldehyde, alkyne and amine

The construction of reduced graphene oxide or graphene oxide (GO) with magnetic nanoparticles has gained more and more attention due to its promising and wide applications in catalysis, photoelectric materials, biomedical fields and so on. The synthesis o