反应详情

温度

85 °C

N-bromosuccinimide (116 g, 1.4 equivalent amounts) was added to a 1,2-dichloroethane (320 mL) solution of methyl 2-(3,4-dichlorophenyl)acetate (106.8 g, 0.446 mol) at room temperature, followed by heating to 85° C. To this solution, a 1,2-dichloroethane (22.6 mL) solution of benzoyl peroxide (2.26 g, 2.0 mol %) was dropwise added dividedly 10 times every 10 minutes, followed by stirring at 85° C. for 3 hours. The reaction solution was cooled to room temperature, sequentially washed with a 2M sodium hydroxide aqueous solution, a mixed liquid of water-sodium thiosulfate aqueous solution (2:1, (v/v)), a saturated ammonium chloride aqueous solution and a saturated salt solution, and dried over anhydrous magnesium sulfate. The drying agent was removed by filtration, and the solvent was distilled off to give the desired product as a brown oil (142 g, yield: 103%).

1. temperatureThe reaction solution was cooled to room temperature
2. washsequentially washed with a 2M sodium hydroxide aqueous solution
3. dry with materiala mixed liquid of water-sodium thiosulfate aqueous solution (2:1, (v/v)), a saturated ammonium chloride aqueous solution and a saturated salt solution, and dried over anhydrous magnesium sulfate
4. customThe drying agent was removed by filtration
5. distillationthe solvent was distilled off