tetraethylammonium p-toluenesulfonate; tetrakis(triphenylphosphine) palladium(0) in acetonitrile Electrochemical reaction, Pb cathode, Pt anode;

2-(p-tolyloxy)ethyl phenyl sulfide; palladium diacetate; acetic acid; p-benozquinone T=40°C; 12 h;