反应详情

4-sec-Butyl-phenol (3.0 g) is dissolved in chloroform and thereto is added bromine (1.02 ml) and the mixture is stirred at room temperature for 30 minutes. Thereto are added a saturated aqueous sodium thiosulfate solution, a saturated aqueous sodium bicarbonate solution and ethyl acetate, and the mixture is separated. The organic layer is washed with a saturated brine, dried over magnesium sulfate, and concentrated under reduced pressure to give 2-bromo-4-sec-butyl-phenol (4.57 g). NMR (CDCl3): 0.81 (3H, t), 1.19 (3H, d), 1.56 (2H, m), 2.51 (1H, m), 5.33 (1H, s), 6.93 (1H, d), 7.02 (1H, d), 7.26 (1H, s).

1. customa saturated aqueous sodium bicarbonate solution and ethyl acetate, and the mixture is separated
2. washThe organic layer is washed with a saturated brine
3. dry with materialdried over magnesium sulfate
4. concentrationconcentrated under reduced pressure