[H-].[Na+].[OH:3][C:4]1[CH:9]=[CH:8][C:7]([N:10]2[C:14]([C:15]3[CH:20]=[CH:19][C:18]([S:21]([CH3:24])(=[O:23])=[O:22])=[CH:17][CH:16]=3)=[CH:13][C:12]([C:25]([F:28])([F:27])[F:26])=[N:11]2)=[CH:6][CH:5]=1.[CH3:29][O:30][CH2:31]Cl.Cl>CN(C)C=O>[CH3:29][O:30][CH2:31][O:3][C:4]1[CH:5]=[CH:6][C:7]([N:10]2[C:14]([C:15]3[CH:16]=[CH:17][C:18]([S:21]([CH3:24])(=[O:23])=[O:22])=[CH:19][CH:20]=3)=[CH:13][C:12]([C:25]([F:26])([F:27])[F:28])=[N:11]2)=[CH:8][CH:9]=1Sodium hydride (0.17 g) was added to a solution of 1-(4-hydroxyphenyl)-5-[4-(methylsulfonyl)phenyl]-3-(trifluoromethyl)pyrazole (1.5 g) in N,N-dimethylformamide (15 ml) at 5° C. The mixture was stirred at ambient temperature for 30 minutes. To the mixture was added chloromethyl methyl ether (0.4 g) in N,N-dimethylformamide (2 ml) at 5° C. The obtained mixture was stirred at 5° C. for 2 hours and at ambient temperature for 1 hour, poured into a mixture of ice and dilute hydrochloric acid, and extracted with ethyl acetate. The extract was washed with water, dried, and evaporated. The residue (1.3 g) was recrystallized from isopropanol to give crystals of 1-[4-(methoxymethoxy)phenyl]-5-[4-(methylsulfonyl)phenyl]-3-(trifluoromethyl)pyrazole (1.3 g).
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