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In a 100-ml flask equipped with a stirrer, a thermometer, a nitrogen introducing pipe and a condenser, 50 ml (0.297 mol) of trifluoromethanesulfonic anhydride and 25 ml (0.342 mole) of 2,2,2-trifluoroethanol were placed at room temperature and stirred for 30 minutes in a nitrogen atmosphose, followed by reflux for 3 hours. After distillation, 50.3 g of 2,2,2-trifluoroethyl trifluoromethanesulfonate was obtained in yield of 73%.

1. customIn a 100-ml flask equipped with a stirrer
2. customwere placed at room temperature
3. temperatureby reflux for 3 hours
4. distillationAfter distillation