反应详情

A mixture consisting of 25.4 g of 4-(4-trifluoromethylphenoxy)phenol, 14.5 g of anhydrous potassium carbonate, 33.8 g of 2-(4-chlorobenzylthio)ethyl 2-bromopropionate and 150 ml of dry acetonitrile was refluxed for 3 hours with vigorous stirring. After cooling the reaction mixture to room temperature, the acetonitrile was removed under reduced pressure. Then, 150 ml of toluene were added to the residue and the resulting mixture was washed successively with 1% strength by weight aqueous sodium hydroxide solution and water, followed by dehydration. Upon distilling off the toluene under reduced pressure, there were obtained 46.4 g of 2-(4-chlorobenzylthio)-ethyl 2-[4-(4-trifluoromethylphenoxy)-phenoxy]-propionate in the form of a colorless oil. nD20 =1.5555.

1. temperaturewas refluxed for 3 hours with vigorous stirring
2. customthe acetonitrile was removed under reduced pressure
3. additionThen, 150 ml of toluene were added to the residue
4. washthe resulting mixture was washed successively with 1% strength by weight aqueous sodium hydroxide solution and water
5. distillationUpon distilling off the toluene under reduced pressure