In this research, a novel nanomagnetic tetra-azamacrocyclic Schiff base complex of copper(ii) was produced via post-synthetic surface modification an Fe3O4 by silane-coupling agent that contains acetylacetone functionalities at the end its chain. Moreover, target Cu involves tetradentate ligand obtained from template reaction with o-phenylenediamine and Cu(NO3)2·3H2O. Furthermore, prepared nominated as [Fe3O4@TAM-Schiff-base-Cu(II)]. The Fourier-transform infrared (FT-IR) analysis indicates...

Herein, we present a highly efficient dual-functionalized acid–base nanocatalyst, denoted as Fe3O4@GLYMO-HEPES, featuring sulfuric acid and tertiary amines its dual functional components. This catalyst is synthesized through the immobilization of 4-(2-hydroxyethyl)-1-piperazineethanesulfonic (HEPES) source these functionalities onto magnetite (Fe3O4) using 3-glycidoxypropyltriethoxysilane (GLYMO) linker. Characterization studies confirm integrity Fe3O4 core, with GLYMO-HEPES coating...

Abstract: In this study, magnetic hercynite nanoparticles (FeAl2O4, MNPs) were functionalized by cheap and readily available tris(hydroxymethyl)aminomethane (Tris) as an organocatalyst. Various techniques, including Vibrating Sample Magnetometry (VSM), Energy Dispersive X-ray Spectroscopy (EDS), Diffraction (XRD), Scanning Electron Microscopy (SEM), Thermogravimetric Analysis (TG) employed to determine the morphology, particle size, physical properties, properties of nanoparticles....

Cu(II)–Schiff base complex‐functionalized magnetic Fe 3 O 4 nanoparticles were prepared and characterized using Fourier transform infrared spectroscopy, thermogravimetric analysis scanning electron microscopy techniques. This compound acts as a highly active selective catalyst for the oxidation of sulfides thiols. These reactions can be carried out in ethanol or solvent‐free conditions presence hydrogen peroxide with complete selectivity very high conversion under mild reaction conditions....

2,3-Dihydroquinazolin-4(1H)-one and tetrazole are a class of nitrogen-containing heterocyclic compounds that play an important role in drug design part many biological industrial compounds. In this study, aluminium-based ionic liquid grafted onto biochar surface (BC/[TESPMI]AlCl4) was synthesized used as catalyst for the synthesis series derivatives including 2,3-dihydroquinazolin-4(1H)-ones ethanol at reflux conditions tetrazoles PEG-400 110 °C. All products were obtained with good...

An efficient magnetic nanoparticle‐supported palladium (Fe 3 O 4 /SiO 2 ‐PAP‐Pd) catalyst is reported for the Suzuki cross‐coupling and Stille reactions. This method provides a novel much improved modification of coupling reactions in terms phosphine‐free catalyst, short reaction time, clean small quantity catalyst. Another important feature this that can be easily recovered from mixture reused with no loss its catalytic activity. Copyright © 2015 John Wiley & Sons, Ltd.

Copper, an abundant metal on Earth, has re‐emerged as a suitable alternative to versatile Palladium‐catalyzed C–N coupling. Herein, new recoverable and reusable bifunctional catalyst was synthesized by combining ionic liquid linking Cu(II) the surface of Fe 3 O 4 nanoparticles. New nanocatalyst (MNP@IAH@Cu‐IL) completely characterized using different techniques. Continuing, MNP@IAH@Cu‐IL applied in synthesis primary secondary amines via C(sp 2 )‐N coupling reaction successfully. This worked...

A novel heterogeneous Pd-catalyst was designed and successfully employed in C–C coupling reactions under green conditions.

A novel, efficient and green Cu(<sc>ii</sc>)/<sc>l</sc>-His@Fe₃O₄ catalyst has been applied successfully in the synthesis of heterocyclic compounds.

Fe 3 O 4 –Schiff base of Cu(II) is found to be a recyclable and heterogeneous catalyst for the rapid efficient synthesis various 2,3‐dihydroquinazolin‐4(1H)‐one derivatives from two‐component condensation 2‐aminobenzamide an aldehyde. This reaction simple, green cost‐effective. Separation recycling can also easily done by magnetic decantation nanoparticles with external magnet. The prepared was characterized using thermogravimetry, Fourier transform infrared spectroscopy, vibrating sample...

In this research, the surface of boehmite NPs were modified and functionalized by 2-benzoylpyridine toward immobilization copper ions as a practical catalyst in synthesis tetrazoles.

E-mail: arashghch58@yahoo.com; a.ghorbani@mail.ilam.ac.ir Received January 15, 2011, Accepted February 21, 2011Key Words : Alcohols, Alkyl formate, Formylation, Poly(4-vinylpyridinium tribromide), Ethyl formateThe introduction and development of heterogeneouscatalysts for fine chemical synthesis has become a majorarea research.