dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II) dichloromethane adduct; triethylamine T=130°C; P=52505.3 Torr; 18 h;

tert.-butylhydroperoxide in dichloromethane; water T=25°C; Overall yield = 35 percent;

1: oxalyl dichloride; N,N-dimethyl-formamide / cyclohexane / 3 h / 20 °C / |Reflux 2: dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II) dichloromethane adduct; triethylamine / 18 h / 130 °C / 52505.3 Torr View Scheme