Pyridine → 2,2,3,3-Tetrafluorobutane-1,4-diyl bis(trifluoromethanesulfonate)

Participants

Reaction Conditions

Reaction Steps

To a cooled (about 0° C.) solution of 2,2,3,3-tetrafluorobutanediol (15 grams, 93 mmol) and pyridine (19 mL, 230 mmol) in dichloromethane (250 mL), was added dropwise trifluoromethanesulfonic anhydride (34 mL, 200 mmol). After the addition, the mixture was stirred at about 0° C. for about one hour, followed by stirring at room temperature for one additional hour, then diluted with dichloromethane, washed with water and brine, dried over magnesium sulfate, filtered and concentrated to near dryness, leaving a dichloromethane-containing oil. 1H NMR (400 MHz, CDCl3) δ 4.82 (m). 19F NMR (376 MHz, CDCl3) δ−120.83 (m, 4H), −74.38 (s, 6H).

Provenance & Evidence