[Li+].[OH-].[CH3:3][N:4]([CH3:25])[C:5]([C:7]1[CH:8]=[CH:9][C:10]([O:17][CH2:18][C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)=[C:11]([CH:16]=1)[C:12]([O:14]C)=[O:13])=[O:6].Cl>O.O1CCCC1>[CH3:3][N:4]([CH3:25])[C:5]([C:7]1[CH:8]=[CH:9][C:10]([O:17][CH2:18][C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)=[C:11]([CH:16]=1)[C:12]([OH:14])=[O:13])=[O:6]A solution of LiOH (585 mg, 13.95 mmol) in water (8 ml) was added to a stirred solution of methyl 5-[(dimethylamino)carbonyl]-2-[(phenylmethyl)oxy]benzoate (may be prepared as described in Description 58; 437 mg, 1.40 mmol) in tetrahydrofuran (2 ml) at room temperature. The mixture was stirred at room temperature for 3 h. The mixture was acidified with HCl (6 mol/l) and extracted with ethyl acetate (3×40 ml). The organic phase was washed with saturated brine (25 ml), dried over sodium sulfate, and evaporated in vacuo to give the crude product as a white solid. 350 mg.
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