Magnetically Separable and Versatile Pd/Fe₃O₄ Catalyst for Efficient Suzuki Cross‐Coupling Reaction and Selective Hydrogenation of Nitroarenes

Abstract

Magnetic nanoparticle-supported Pd/Fe 3 O 4 was readily prepared and proved to be versatile catalyst for efficient Suzuki cross-coupling reaction, and the reduction of nitroarenes under mild conditions (balloon H 2 pressure and room temperature). The catalyst could be conveniently recovered and reused several times with sustained catalytic activity.

Lattice Expansion in Metal Oxide Nanoparticles: MgO, Co3O4, & Fe3O4

“…Fe 3 O 4 is also known as magnetite, and it is useful for reduction in nitric oxide, 35 catalyzing the water-gas shift reaction, 36 and in many other organic reactions. 37,38 Fe 3 O 4 is also of interest as a drug delivery agent.…”

“…Iron is a transition metal that can form several different oxides, but the oxide of interest in this report is Fe 3 O 4 , which is isostructural with the previously described Co 3 O 4 . Fe 3 O 4 is also known as magnetite, and it is useful for reduction in nitric oxide, catalyzing the water‐gas shift reaction, and in many other organic reactions . Fe 3 O 4 is also of interest as a drug delivery agent.…”

Magnetic Nanoparticles of Ferrite Complex Oxides: A Cheap, Efficient, Recyclable Catalyst for Building the CN Bond under Ligand‐Free Conditions

“…[33] We have recent-ly reported the use of CuFe 2 O 4 nanoparticles as a magnetically separable catalyst for the CÀO coupling reaction of phenols and aryl halides in the presence of various nitrogen or oxygen ligands. [34] As a part of our continuing interest in the development of magnetic nanoparticles for organic reactions, [34][35][36][37] we describe herein the development of magnetic nanoparticles of ferrite complex oxide catalysts for the N-arylation of nitrogen nucleophiles. Indeed, the reaction afforded moderate to good yields with CuFe 2 O 4 nanoparticles as catalyst under ligand-free conditions.…”

Recent Applications of Magnetically Recoverable Nanocatalysts in CC and CX Coupling Reactions

“…In addition to the above‐mentioned reports, there have also been other investigations into the direct immobilization of Pd on bare iron oxide nanoparticles, and the application of the resulting supported catalysts as magnetically separable Pd catalysts in Suzuki cross‐coupling reactions, as summarized in Table 1 20–24…”