F[C:2]1[CH:7]=[CH:6][C:5]([C:8](=[O:10])[CH3:9])=[CH:4][C:3]=1[C:11]([F:14])([F:13])[F:12].[CH3:15][O-:16].[Na+].O>CN(C)C=O>[CH3:15][O:16][C:2]1[CH:7]=[CH:6][C:5]([C:8](=[O:10])[CH3:9])=[CH:4][C:3]=1[C:11]([F:14])([F:13])[F:12]To a solution of 4′-fluoro-3′-trifluoromethylacetophenone (25.0 g) in N,N-dimethylformamide (70 ml) was added sodium methoxide (7.21 g) under ice-cooling, and the mixture was stirred for 2 hr under ice-cooling and further at room temperature for 1 hr. The reaction mixture was added to water, and extracted with ethyl acetate. The organic layer was washed with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure to give the object product (24.3 g) as a brown solid.
Wird geladen…
