Nano cobalt ferrite catalyzed coupling reaction of nitroarene and alkyl halide: An odorless and ligand-free rout to unsymmetrical thioether synthesis

Magnetically Separable Transition Metal Ferrites: Versatile Heterogeneous Nano‐Catalysts for the Synthesis of Diverse Bioactive Heterocycles

“…Nano‐cobalt ferrite (CoFe 2 O 4 ) can be synthesized by mixing the solutions of iron(III) nitrate (Fe(NO 3 ) 3 ⋅9H 2 O) and cobalt nitrate (Co(NO 3 ) 2 ⋅6H 2 O) using various surfactants to prevent aggregation and agglomeration of the nanoparticles in basic medium …”

“…These spinel type cubic nano‐ferrites with the general formula (M 2+ )(Fe 3+ ) 2 O 4 possess both Lewis acidic (due to Fe 3+ of Fe 2 O 3 ) as well as basic character (due to O 2− of MO, where M=Mn 2+ , Co 2+ , Ni 2+ , Cu 2+ and Zn 2+ ) . Transition metal ferrites were employed as an efficient catalyst for the hydrogenation of olefins, oxidation of alkenes, transesterification of β‐ketoesters, synthesis of thioethers, sulfides, aza‐arenes, triphenylamines, acetylferrocene chalcones along with various organic name reactions such as Michael addition reaction, thia‐Michael reaction etc .…”

Nano CoCuFe2O4‐catalyzed coupling reaction of arylboronic acid with amines and thiols: An atom‐economic and ligand‐free route to access unsymmetrical amines and sulfides

“…Recently, in the realm of cross‐coupling reactions, magnetic metal oxide nanoparticles with spinel structure have attracted considerable attention . In fact, the synergetic effect among existing transition metals in these systems could enhance their catalytic activity …”

Cobalt‐Copper Ferrite Nanoparticles Catalyzed Click Reaction at Room‐Temperature: Green Access to 1,2,3‐Triazole Derivatives

“…In fact, due to the synergetic effect among transition metals, those catalytic systems bearing this property could enhance the catalytic activity compared to the single metal‐based ones ,. Considering to economical and environmental factors, encourage to our previous work on good performance of spinel ferrite catalyzed C–C coupling reactions,, we investigated its application in Huisgen 1,3‐Dipolar Cycloaddition reaction. Herein, our goal was reaching to an efficient green media by using cost‐effective nano catalyst in regioselective coupling of alkyl azides (from the in‐situ reaction of alkyl halides or tosylates) with alkynes at room temperature.…”