Fabrication of Fe₃O₄-Bis(Py-Imine)-PdCl₂ Nanocomposite as a Highly Active Nanomagnetic Catalyst for Carbonylative Suzuki Reactions of Phenylboronic Acid with Aryl Iodides and Mo(CO)₆

Abstract

In the research work, a novel and recoverable nanomagnetic pallidum catalyst [Fe₃O₄-Bis(Py-Imine)-PdCl_{2 ]} based on the immobilization of Pd on the surface of magnetic Fe₃O₄ nanoparticles modified with picolylamine as ligand was designed and fabricated. The structure of the as-fabricated Fe₃O₄-Bis(Py-Imine)-PdCl₂ nanocatalyst was characterized by FT-IR spectroscopy, SEM, TEM, EDX, ICP-OES, TGA, VSM, XRD and EDX mapping techniques. The Fe₃O₄-Bis(Py-Imine)-PdCl₂ nanocomposite demonstrated the high activity in the preparation of diaryl ketones through one-pot three-component Suzuki reactions of phenylboronic acids with aryl iodides and Mo(CO)_6. The recycling of the Fe₃O₄-Bis(Py-Imine)-PdCl₂ catalyst was examined in the coupling of phenylboronic acid with 4-methyl iodobenzene and Mo(CO)₆; the results revealed that this catalyst could be reused for more than 6 consecutive runs without a loss of activity. This method offers several remarkable features, such as high yield of products, simplicity of separation of products from catalysts, performing reactions in green solvent and mild conditions, ability to recycle and reusing the catalyst without significant reduction in its catalytic activity.

Keywords:

• Fe₃O₄-Bis(Py-Imine)-Pd nanocatalyst
• diaryl ketones
• reusability
• Suzuki reactions
• spectroscopic techniques

Disclosure statement

No potential conflict of interest was reported by the authors