potassium phosphate; copper(l) iodide; 2,2,6,6-tetramethylheptane-3,5-dione in toluene T=130°C; 24 h; Inert atmosphere;

pyridine in dichloromethane T=35 - 45°C;

1: pyridine; 4-(N,N-dimethlyamino)pyridine / dichloromethane / 15 h / 0 - 40 °C / Inert atmosphere 2: copper(l) iodide; potassium phosphate; 2,2,6,6-tetramethylheptane-3,5-dione / toluene / 24 h / 130 °C / Inert atmosphere View Scheme

1: phosphorus pentachloride 2: alcohol; diethyl ether 3: 270 °C / Geschwindigkeit View Scheme

1: alcohol; diethyl ether 2: 270 °C / Geschwindigkeit View Scheme