1: diethyl ether / 48 h / 20 °C 2: AlCl3, aluminium chloride / toluene / 72 h / 20 °C / Inert atmosphere 3: potassium fluoride; chlorine / acetonitrile / 20 °C / Cooling with ice 4: SbF5 / Fluorinertreg; FC-72 / 20 °C View Scheme

1: potassium fluoride; chlorine / acetonitrile / 20 °C / Cooling with ice 2: SbF5 / Fluorinertreg; FC-72 / 20 °C View Scheme