1: With potassium acetate in dimethyl sulfoxide 0.25 h; 2: With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride in dimethyl sulfoxide T=86°C; 20 h;

1: sodium nitrite; acetic acid / 2.5 h / 20 °C 2: potassium acetate / (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride / dimethyl sulfoxide / 6 h / 85 °C View Scheme

sodium carbonate; tetrakis(triphenylphosphine) palladium(0) in ethylene glycol dimethyl ether; water T=80°C;