Magnetic nanoparticles entrapped in the cross-linked poly(imidazole/imidazolium) immobilized Cu(ii): an effective heterogeneous copper catalyst

Abstract

Anchoring of copper sulfate in layered poly(imidazole-imidazolium) coated magnetic nanoparticles provided a highly stable, active, reusable, high loading, and green catalyst for the click synthesis of 1,2,3-triazoles via a one-pot cycloaddition of alkyl halide, azide, and alkyne (Cu-A3C).

In situpreparation and characterization of novel CuI‐functionalized poly[(methyl methacrylate)‐co‐maleimide] as an efficient heterogeneous catalyst in the regioselective synthesis of 1,2,3‐triazoles via click reaction: Experimental and computational chemistry

“…It is worth mentioning that the results showed alkyl and aryl halides react better than haloketones in terms of yields and reaction times. The efficiency of CuI@[PMMA‐co‐MI] in click reaction was also compared with that of previously reported catalysts under various reaction conditions (Table ) . By comparison, it can be concluded that CuI@[PMMA‐co‐MI] as a novel nanocatalyst has several merits such as higher or comparable yield of the desired product in shorter reaction time.…”

“…Next, other reaction variables, such as catalyst loading amount and temperature, were examined (Table ). The optimal reaction conditions in terms of higher yields and shorter reaction times as well as considering the principles of green chemistry were found to be as follows: benzyl bromide, phenylacetylene (1 mmol) and sodium azide (1.3 mmol) being reacted in the presence of CuI@[PMMA‐co‐MI] (0.02 g) in water (10 ml) at room temperature (Table ) …”

Heterogeneous Fe3O4@chitosan-Schiff base Pd nanocatalyst: Fabrication, characterization and application as highly efficient and magnetically-recoverable catalyst for Suzuki–Miyaura and Heck–Mizoroki C–C coupling reactions

“…ACCEPTED MANUSCRIPT 9 6) due to steric hindrance. The Suzuki reaction of sterically hindered 2-bromonaphthalene afforded a moderate yield of the corresponding coupled product.…”

“…With the advent of nanoscience, chemists achieved that the best solution to lower activity limitation of heterogeneous catalysts is to keep the size of the particles in the heterogeneous catalyst as small as possible. Nowadays a wide variety of nanostructured catalysts or catalytic systems immobilized on nanostructured supports have been applied in various catalytic reactions and as results heterogeneous catalytic systems recently have attracted much attention [6][7][8][9][10][11][12][13].…”

Immobilization of nickel ions onto the magnetic nanocomposite based on cross‐linked melamine groups: Effective heterogeneous catalyst for N‐Arylation of Arylboronic acids

“…An innovative way for increasing the loading amounts of nickel is immobilization of metal ions onto the cross‐linked polymeric networks . These polymeric networks have high porosity, high surface area and large amounts of attaching sites to grab metal ions .…”