Manganese(III) Salen Complex Immobilized on Fe₃O₄ Magnetic Nanoparticles: The Efficient, Green and Reusable Nanocatalyst

Abstract

A new Fe3O4 magnetic nanoparticles supported manganese salen complex was successfully prepared by attaching manganese acetates to a novel N,N′‐bis(salicylidine)ethylenediamine ligand functionalized Fe3O4. The as‐prepared catalyst was characterized by TGA, XRD, FTIR, VSM, and TEM. It was found to be an efficient catalyst for the synthesis of benzopyranopyrimidines in aqueous medium. High catalytic activity and ease of recovery from the reaction mixture using external magnet, and several reuse times without significant losses in performance are additional eco‐friendly attributes of this catalytic system.

Schiff base complexes of Ni, Co, Cr, Cd and Zn supported on magnetic nanoparticles: As efficient and recyclable catalysts for the oxidation of sulfides and oxidative coupling of thiols

“…More important, magnetic separation of the MNPs is easier and more effective than filtration or centrifugation, simple, economical and promising for industrial applications [3,6]. One of the most promising MNPs supports for the development of high-performance catalyst supports is superparamagnetic iron oxide [6,7]. The notable advantages of Fe 3 O 4 MNPs are simple in synthesis, readily available, low cost, high surface area, low toxicity and superparamagnetism properties [8].…”

“…Recently, metal complexes of Schiff-bases have been emerged for the development of efficient variety of catalysts [7,10] however, to clean and facilitate catalysts separation, Schiff-base compounds have been supported onto heterogeneous materials [11,12]. Among them, salicylidene Schiff-base (salen) can be easily prepared using condensation of salicylaldehyde and amine groups.…”

Schiff base complexes and their versatile applications as catalysts in oxidation of organic compounds: part I

“…In organic synthesis, the convenient route of synthesis and thermal stability of Schiff base ligands have contributed significantly to their possible applications in catalysis as metal complexes . At present, Schiff base complexes have emerged for the development of a variety of efficient catalysts . To enable the separation of the catalysts, Schiff base complexes have been supported on heterogeneous materials .…”

“…[8] At present, Schiff base complexes have emerged for the development of a variety of efficient catalysts. [9,10] To enable the separation of the catalysts, Schiff base complexes have been supported on heterogeneous materials. [11,12] Among them, salicylidene Schiff base(salen)(chelating ligand) can be easily synthesized using condensation of salicylaldehyde and an amino compound.…”

Synthesis, Characterization, and Heterogeneous Catalytic Activity of Sulfamic Acid Functionalized Magnetic IRMOF‐3

“…These compounds are considered as a class of important medicinal scaffolds that are commonly derived from the condensation reaction of salicylaldehydes, malononitrile and secondary amines in the presence of acid catalysts. Recently, ionic liquids, LiClO 4 , ZrOCl 2 , manganese oxide salen complex immobilized on Fe 3 O 4 magnetic nanoparticles and microwave irradiation have been utilized for their synthesis …”