triethylamine; dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II) dichloromethane adduct in N,N-dimethyl-formamide T=70°C; P=5171.62 Torr; 15 h; Parr bomb;

1: triethylamine; diphenylphosphoranyl azide / toluene / 0 - 20 °C 2: toluene / 2 h / Reflux 3: tributyl-amine / diphenylether; toluene / 190 - 210 °C 4: triethylamine / (S)-(-)-2,2'-bis(diphenylphosphino)-1,1'-binaphthyl; palladium dichloride / 12 h / 100 °C / 15001.5 Torr View Scheme

1: With water; lithium hydroxide hydrate in tetrahydrofuran T=20°C; 4 h; 2: With hydrogenchloride in water pH=5;