反应详情

To 206 mg. (1 m mole) of 3-hydroxy-5-trifluoromethylbenzoic acid dissolved in 2.5 ml. of dimethylsulfoxide is added 85 mg. (2 m moles) of a 56.6% sodium hydride suspension in oil. When the hydrogen evolution has ceased, 199 mg. (1 m mole) of α-bromoacetophenone is added and the reaction mixture is allowed to stir at room temperature for 2 hours. The reaction is diluted with 10 ml. of water and extracted with ether. The aqueous phase is acidified and the product extracted with ether. Removal of the ether under reduced pressure followed by sublimation at 150° C. and 0.1 mm pressure provided the pure product, m.p. 180°-182° C.

1. additionThe reaction is diluted with 10 ml
2. extractionof water and extracted with ether
3. extractionthe product extracted with ether
4. customRemoval of the ether under reduced pressure
5. customfollowed by sublimation at 150° C.
6. custom0.1 mm pressure provided the pure product, m.p. 180°-182° C.