[F:1][C:2]([F:13])([F:12])[CH2:3][O:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][C:6]=1[OH:11].Br[CH2:15][C:16]([O:18][CH2:19][CH3:20])=[O:17].C(=O)([O-])[O-].[K+].[K+].C(OCC)(=O)C>CN(C)C=O>[F:1][C:2]([F:12])([F:13])[CH2:3][O:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][C:6]=1[O:11][CH2:15][C:16]([O:18][CH2:19][CH3:20])=[O:17]To a solution of 2-(2,2,2-trifluoroethoxy)phenol (200 mg) in dry N,N-dimethylformamide (2 ml) were added ethyl bromoacetate (138 μl) and potassium carbonate (216 mg), and the mixture was reacted with stirring at room temperature for 1 hour, and then for 1 hour at 60° C. To the reaction mixture was added ethyl acetate, and ethyl acetate solution was washed with water and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure to give 270 mg of ethyl 2-(2,2,2-trifluoroethoxy)phenoxyacetate as an oil.
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