sulfuric acid 2 h; Irradiation;

potassium acetate; palladium diacetate; (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride in dimethyl sulfoxide T=20 - 65°C; 3 h;

hydrogenchloride; water in tetrahydrofuran T=60°C; 22 h;

1: hydrogenchloride / 1,4-dioxane / 44 h / 20 - 50 °C 2: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 21 h / 20 °C 3: trichlorophosphate / 2 h / 20 °C / Inert atmosphere 4: hydrogenchloride; water / tetrahydrofuran / 22 h / 60 °C View Scheme

1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 21 h / 20 °C 2: trichlorophosphate / 2 h / 20 °C / Inert atmosphere 3: hydrogenchloride; water / tetrahydrofuran / 22 h / 60 °C View Scheme

1: trichlorophosphate / 2 h / 20 °C / Inert atmosphere 2: hydrogenchloride; water / tetrahydrofuran / 22 h / 60 °C View Scheme

potassium hydroxide in N-methyl-acetamide; methanol