Preparation of polymer-bound palladium catalyst and its application to the reduction of nitro arenes and the hydrodehalogenation of aryl halides

Polymer-bound palladium catalyst was prepared as PdO nanoparticles bound on the surface of polystyrene beads. This catalytic system showed good activities in the reduction of nitro arenes and the hydrodehalogenation of aryl halides. When the nitro arenes were reacted with 10 mol% PdO and K3PO4 (1.5 equiv.) in DMF/cyclohexanol at 110 °C, the corresponding amino arenes were formed in good yields. In addition, these reaction conditions afforded hydrodehalogenated products from aryl iodides, bromides, and chlorides.