Palladium nanoparticles immobilized on magnetic nanoparticles: An efficient semi-heterogeneous catalyst for carbonylation of aryl bromides

• A catalytic system was obtained by supporting Pd nanoparticles on Fe3O4 nanoparticles.
• It catalyzed efficiently carbonylation reactions of aryl bromides.
• The catalyst can be simply recovered by magnetic separation.
• The catalyst could be reused five times without significant loss of activity.

We describe a method for supporting palladium nanoparticles on magnetic nanoparticles modified with amino-functionalized dihydro-imidazolium groups. This catalytic system is very efficient in alkoxy- and amino-carbonylation reactions of aryl bromides. The catalyst can be easily recovered from the reaction mixture by applying an external magnetic field and reused for over five consecutive cycles without a significant decrease in its activity.

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