反应详情

To a solution of 2-fluoro-4-(trifluoromethyl)aniline (498 g, 2.783 mmol, 1.00 eq.) in acetonitrile (5 L) was added N-chlorosuccinimide (NCS, 408 g, 3.06 mmol, 1.1 eq.). Then the solution was heated under reflux for 3 hours and then concentrated under vacuum, diluted with petroleum ether (PE 1 L) and filtered. The filtrate was concentrated under vacuum to afford a red oil. The oily product was purified by vacuum distillation to give 2-chloro-6-fluoro-4-(trifluoromethyl)aniline as a yellow liquid (420 g, 71%).

1. temperatureThen the solution was heated
2. temperatureunder reflux for 3 hours
3. concentrationconcentrated under vacuum
4. additiondiluted with petroleum ether (PE 1 L)
5. filtrationfiltered
6. concentrationThe filtrate was concentrated under vacuum
7. customto afford a red oil
8. distillationThe oily product was purified by vacuum distillation