反应详情

A suspension of sodium sulfite (3.0 g, 24 mmol), sodium bicarbonate (3.7 g; 44 mmol and 3-trifluormethylbenzenesulfonylchloride (5.0 g; 20 mmol) in 70 mL water, was heated at 75° C. for 1 hour. Then 5 mL 50% aqueous sodium hydroxide to solution and ethyl bromoacetic acid (2.65 mL; 22 mmol) was added and the mixture was refluxed for 30 hours. Then the mixture was extracted with dichloromethane and concentrated to provide 1 g (4.46 mmol; 20% yield) of 1-methanesulfonyl-3-trifluoromethylbenzene as a solid.

1. temperaturethe mixture was refluxed for 30 hours
2. extractionThen the mixture was extracted with dichloromethane
3. concentrationconcentrated