Highly active recyclable heterogeneous nanonickel ferrite catalyst for cyanation of aryl and heteroaryl halides

Abstract

Magnetic nickel ferrite nanoparticles are found to be an efficient catalytic system for cyanation reactions of various types of aryl halides under conventional heating conditions. All the reactions result in very good to excellent yields under optimized reaction conditions. Furthermore, the catalyst is easily removed from the reaction medium and can be reused further in several subsequent runs. Copyright © 2014 John Wiley & Sons, Ltd.

Structural, Magnetic, and Catalytic Evaluation of Spinel Co, Ni, and Co–Ni Ferrite Nanoparticles Fabricated by Low-Temperature Solution Combustion Process

“…On the other hand, NiFe 2 O 4 NPs have been utilized in selective oxidation of thiols to produce disulfides (in presence of hydrogen peroxide), 11 cyanation of aryl and heteroaryl halides, 12 reduction of 4-nitrophenol (4-NP) in presence of NaBH 4 , 13 and gas sensing. 14−16 Most of these applications of NiFe 2 O 4 NPs are driven by their surface properties, such as presence of (i) metal hydroxides, (ii) remanant organic ligand, and (iii) adsorbed small organic molecules at their surfaces.…”

“…On the other hand, NiFe 2 O 4 NPs have been utilized in selective oxidation of thiols to produce disulfides (in presence of hydrogen peroxide), cyanation of aryl and heteroaryl halides, reduction of 4-nitrophenol (4-NP) in presence of NaBH 4 , and gas sensing. − Most of these applications of NiFe 2 O 4 NPs are driven by their surface properties, such as presence of (i) metal hydroxides, (ii) remanant organic ligand, and (iii) adsorbed small organic molecules at their surfaces. Therefore, designing and fabricating NiFe 2 O 4 NPs with tailored surface functionalities are of immense importance for their catalytic applications. , NiFe 2 O 4 NPs are also the potential candidates for magnetic separation of gases (i.e., separation of O 2 from air) .…”

“…9 The ability to control magnetic properties, such as saturation magnetization, remanent magnetization, and coercivity of these ferrite nanostructures, is important not only for the fundamental understanding of magnetism in these important materials but also for their applications as magnetic resonance imaging contrast-enhancement agents and in magnetic hyperthermia for biomedical therapeutic purposes. 10 On the other hand, NiFe 2 O 4 NPs have been utilized in selective oxidation of thiols to produce disulfides (in presence of hydrogen peroxide), 11 cyanation of aryl and heteroaryl halides, 12 reduction of 4-nitrophenol (4-NP) in presence of NaBH 4 , 13 and gas sensing. 14−16 Most of these applications of NiFe 2 O 4 NPs are driven by their surface properties, such as presence of (i) metal hydroxides, (ii) remanant organic ligand, and (iii) adsorbed small organic molecules at their surfaces.…”

Synthesis of 5‐substituted 1H‐tetrazoles using a recyclable heterogeneous nanonickel ferrite catalyst

“…To evaluate the leaching phenomenon of the catalyst as a heterogeneous catalytic system, the reaction of 4‐chlorobenzonitrile with sodium azide was repeated under optimized conditions in a defined time (1 h). However, for this bimetallic compound there is no support and the whole catalyst is a single spinel structure and therefore no leaching effect is observed in a formal form . As evident from Table , this reaction completes in 2 h and it gives only 60% yield after 1 h. Then the catalyst nanoparticles were collected from the reaction mixture with an external magnet and the reaction was continued under the same conditions.…”

Nickel ferrite nanoparticles: an efficient and reusable nanocatalyst for a neat, one-pot and four-component synthesis of pyrroles

“…[30][31][32] Recently we utilized NMNs as highly active recyclable heterogeneous for cyanation of aryl and heteroaryl halides. 33 In order to shed more light on this area, we decided to apply nickel ferrite nanoparticles as a recyclable and reusable catalyst in four-component synthesis of substituted pyrroles. Another advantage of these catalytic systems is that although heterogeneous catalysts usually suffer from leaching, this phenomenon is not observed in the case of NMNs because of their specific ferromagnetic nature.…”