反应详情

4-Bromophenol (28.4 g, 0.165 mol) and DMAP (0.17 g, 1.4 mmol) were dissolved in dichloromethane (110 mL). The solution was cooled in an ice-bath and triethylamine (24 mL) was added portionwise. Propionyl chloride (16 g, 0.17 mmol) was then added dropwise and the resulting mixture was stirred at room temperature for 2 hrs. The mixture was washed with water, followed by brine, dried and concentrated to give 4-bromophenyl propionate, which was used in the next step without further purification (34 g, 92%). 1H NMR (MeOD, 400 MHz): 1.12-1.24 (m, 3H), 2.57-2.63 (m, 2H), 7.02-7.06 (m, 2H), 7.51-7.55 (m, 2H).

1. temperatureThe solution was cooled in an ice-bath
2. washThe mixture was washed with water
3. customdried
4. concentrationconcentrated