bromine; triethylamine; 4-(N,N-dimethlyamino)pyridine in DMF (N,N-dimethyl-formamide) T=20 - 30°C; 4 h;

potassium acetate; dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II) dichloromethane adduct in dimethyl sulfoxide T=80°C; Inert atmosphere;