1.1: diethylamino-sulfur trifluoride / dichloromethane / 1.25 h / -78 °C 1.2: 4 h / -78 - 20 °C 2.1: selenium(IV) oxide / ethyl acetate / 1 h / 75 °C 3.1: platinum(IV) oxide; hydrogen / 3040.2 Torr 4.1: 20 wt. Pd(OH)2 on activated carbon; hydrogen; trifluoroacetic acid / water / 24 h / 20 °C / 3040.2 Torr View Scheme

1.1: diethylamino-sulfur trifluoride / dichloromethane / 1.25 h / -78 °C 1.2: 4 h / -78 - 20 °C 2.1: selenium(IV) oxide / ethyl acetate / 1 h / 75 °C 3.1: platinum(IV) oxide; hydrogen / 3040.2 Torr 4.1: 20 wt. Pd(OH)2 on activated carbon; hydrogen; trifluoroacetic acid / water / 24 h / 20 °C / 3040.2 Torr 5.1: hydrogenchloride; water / 24 h / 90 - 100 °C View Scheme