反应详情

28.5 g of 2,5-difluoroacetophenone and 26 g of ethyl trifluoroacetate were stirred in 400 ml of anhydrous ether and cooled in an ice bath. 42 ml of 25 wt % sodium methoxide in methanol was then added over 5 minutes. After stirring 1 hour at room temperature, the reaction mixture was extracted with water, the water acidified and extracted with methylene chloride to give 42 g of 1-(2,5-difluorophenyl)-3-(trifluoromethyl)-propane-1,3-dione.

1. temperaturecooled in an ice bath
2. extractionthe reaction mixture was extracted with water
3. extractionextracted with methylene chloride