反应详情

A 100 mL flask equipped with a stir-bar and a nitrogen bubbler was charged with (trifluoromethoxy)-benzene (5.015 g) at room temperature. Oleum (15% SO3, 9.30 g) was added to the above flask at 10° C. The reaction mixture was allowed to warm to room temperature and stirred at room temperature for 15 h. A sodium hydroxide solution (7.75 g, in 23 mL water) was slowly added to the reaction mixture while the reaction mixture was cooled with an ice-water bath. The resulting solid was collected by filtration, dried under vacuum, and then extracted with refluxing ethanol. The ethanol solution was dried to give sodium 4-(trifluoromethoxy)benzenesulfonate (3FMBSNa) 2.0 g (yield 24%): 1H NMR (D2O) 7.45 (d, J=9 Hz, 2H), 7.89 (m, 2H) ppm; 19F NMR (D2O)-58.1 (s) ppm.

1. customA 100 mL flask equipped with a stir-bar
2. temperaturewas cooled with an ice-water bath
3. filtrationThe resulting solid was collected by filtration
4. customdried under vacuum
5. extractionextracted with refluxing ethanol
6. dry with materialThe ethanol solution was dried