Ion-exchange resin-supported palladium catalysts for hydrodehalogenation of aryl halides under batch and continuous flow conditions

Anion-exchange resin-supported palladium catalysts for dehalogenation of aromatic halides have been prepared by immobilizing Pd(II) on anion-exchange resins followed by reduction in hydrogen atmosphere. These catalysts showed high catalytic activity and selectivity in the hydrodehalogenation of various aryl halides both by hydrogen transfer from aqueous sodium formate in water–ionic liquid mixtures under batch conditions, and by hydrogenation in ethanol under moderate pressure of H2 in a continuous flow microreactor.