[OH-].[K+].O.C(O)C.[F:7][C:8]1[CH:9]=[C:10]([CH:20]=[CH:21][CH:22]=1)[O:11][CH2:12][CH2:13][CH2:14][C:15]([O:17]CC)=[O:16]>C(Cl)Cl>[F:7][C:8]1[CH:9]=[C:10]([CH:20]=[CH:21][CH:22]=1)[O:11][CH2:12][CH2:13][CH2:14][C:15]([OH:17])=[O:16]To a solution of KOH (0.24 g, 4.28 mmol) in mixed solvents of water (3 mL) and ethanol (3 mL) under N2 was added ethyl 4-(3-fluorophenoxy)butanoate (0.30 g, 1.33 mmol) in one portion and the mixture was stirred at 40° C. for 4 h. It was then cooled to rt and 20 mL of DCM was added. The organic layer was washed with brine (20 mL×2), dried over anhydrous Na2SO4 and concentrated in vacuo to give the title compound as a white solid (0.25 g, 96%).
読み込み中…