反应详情

To 334 ml of a pyridine solution containing 52.1 g of 2-fluoro-5-nitroaniline was added 42.1 g of methanesulfonyl chloride under ice-cooling, followed by stirring at room temperature for 7 hours. Water was added to the reaction solution, the precipitate was collected by filtration, and the crude crystals were recrystallized from ethanol to give 56.9 g of N-(2-fluoro-5-nitrophenyl)methanesulfonamide as pale yellow needles.

1. temperaturecooling
2. filtrationthe precipitate was collected by filtration
3. customthe crude crystals were recrystallized from ethanol