lithium hydroxide hydrate; water in tetrahydrofuran T=20°C; 3 h; Inert atmosphere;

1: anhydrous potassium trimethylsilanolate / diethyl ether / 12 h / 23 °C / Inert atmosphere 2: thionyl chloride / 1,2-dichloro-ethane; N,N-dimethyl-formamide / 0 - 100 °C / Inert atmosphere 3: sodium azide / water; acetone / 1 h / 0 °C / Inert atmosphere 4: toluene / 1 h / 100 °C / Inert atmosphere 5: toluene / 3 h / 95 °C / Inert atmosphere 6: pyridine; trifuran-2-yl-phosphane; water / methanol / Inert atmosphere View Scheme

diethylamino-sulfur trifluoride T=23°C; 24 h;

F5I*C5H5N*FH in dichloromethane T=20°C; 24 h;

hydrogenchloride in water 24 h; Heating / reflux;

potassium fluoride; copper(l) iodide in N,N-dimethyl acetamide T=100°C; 24 h; Inert atmosphereGloveboxDarkness;