[Cl:1][C:2]1[CH:20]=[CH:19][C:5]([O:6][CH2:7][C:8]2[CH:18]=[CH:17][C:11]([C:12]([O:14]CC)=[O:13])=[CH:10][CH:9]=2)=[CH:4][C:3]=1[C:21]([F:24])([F:23])[F:22].O.[OH-].[Na+]>CO.CCOC(C)=O.Cl>[Cl:1][C:2]1[CH:20]=[CH:19][C:5]([O:6][CH2:7][C:8]2[CH:9]=[CH:10][C:11]([C:12]([OH:14])=[O:13])=[CH:17][CH:18]=2)=[CH:4][C:3]=1[C:21]([F:22])([F:23])[F:24]To a solution of ethyl 4-{[4-chloro-3-(trifluoromethyl)phenoxy]methyl}benzoate (Preparation 17, 350 mg, 0.98 mmol) in methanol (8.0 mL) was added water (2 mL) followed by sodium hydroxide (400 mg, 9.8 mmol). The reaction mixture was heated to 55° C. for 3 hours, then cooled and diluted with EtOAc (50 mL) and 2M HCl (50 mL). The aqueous layer was separated and washed with EtOAc (2×50 mL). The combined organic layers were dried over magnesium sulfate, filtered and concentrated in vacuo to yield a white solid as the title compound (276 mg, 86%).
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