反应详情

Under an inert atmosphere, 27.5 mmol of boron tribromide/dimethyl sulphide complex are dissolved in 100 ml of dichloromethane and stirred for 15 min at ambient temperature. A solution of 13.7 mmol of N-[2-(7-methoxy-1-naphthyl)ethyl]acetamide in 50 ml of dichloromethane is added and the reaction mixture is heated at reflux for 30 hours. After cooling, the reaction mixture is hydrolysed with caution and the dichloromethane is evaporated off. The mixture is then extracted with ethyl acetate, the combined organic phases are washed with a 1M aqueous solution of potassium bicarbonate and then with 1M sodium hydroxide solution. The organic phase is dried over magnesium sulphate and concentrated to yield the title compound.

1. temperaturethe reaction mixture is heated
2. temperatureat reflux for 30 hours
3. temperatureAfter cooling
4. customthe dichloromethane is evaporated off
5. extractionThe mixture is then extracted with ethyl acetate
6. washthe combined organic phases are washed with a 1M aqueous solution of potassium bicarbonate
7. dry with materialThe organic phase is dried over magnesium sulphate
8. concentrationconcentrated