反应详情

温度

40 °C

To 100 mL of ethanol was added 17.0 g (44.8 mmol) of 4-(perfluorobutan-2-yl)-2-(trifluoromethyl)aniline, and 5.28 g (53.8 mmol) of concentrated sulfuric acid and 12.6 g (55.8 mmol) of N-iodosuccinimide were added thereto under ice-cooling, followed by stirring at room temperature for 1 hour and 30 minutes and at 40° C. for 4 hours. To the reaction solution was added a 4 M aqueous sodium hydroxide solution to neutralize the reaction solution, and then ethyl acetate was added thereto to extract the organic phase. The organic phase was washed with saturated brine, and dried over anhydrous magnesium sulfate, and then the solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography (eluent solvent; hexane:ethyl acetate=10:1) to prepare 14.6 g (yield 65%) of a target compound.

1. additionwere added
2. temperatureunder ice-cooling
3. extractionto extract the organic phase
4. washThe organic phase was washed with saturated brine
5. dry with materialdried over anhydrous magnesium sulfate
6. customthe solvent was evaporated under reduced pressure
7. customThe obtained residue was purified by silica gel column chromatography (eluent solvent; hexane:ethyl acetate=10:1)