反应详情

To a solution of 7.0 g (31 mmol) of 3-bromo-2,2,3,3-tetrafluoropropionic acid in 40 ml of ethanol was added 1.0 ml of concentrated sulfuric acid, and the mixture was heated under reflux for 8 hours and then distilled under ordinary pressure to give an ethanolic solution of ethyl 3-bromo-2,2,3,3-tetrafluoropropionate. Ammonia gas was blown into the solution, which was left at room temperature overnight and then concentrated under reduced pressure to give 5.6 g of 3-bromo-2,2,3,3-tetrafluoropropionamide as a white solid.

1. temperaturethe mixture was heated
2. temperatureunder reflux for 8 hours
3. distillationdistilled under ordinary pressure