[OH-].[Na+].C([NH:11][C:12]([NH:14][C:15]1[CH:20]=[C:19]([N:21]2[CH:25]=[CH:24][CH:23]=[N:22]2)[CH:18]=[C:17]([Br:26])[CH:16]=1)=[S:13])(=O)C1C=CC=CC=1>O.C1COCC1>[Br:26][C:17]1[CH:16]=[C:15]([NH:14][C:12]([NH2:11])=[S:13])[CH:20]=[C:19]([N:21]2[CH:25]=[CH:24][CH:23]=[N:22]2)[CH:18]=1A solution of NaOH (0.13 g, 3.35 mmol) dissolved in 1.0 mL of H2O was added to a solution of 1-Benzoyl-3-(3-bromo-5-pyrazol-1-yl-phenyl)-thiourea 3 (0.27 g, 0.67 mmol) in 5.0 mL of THF. The resulting reaction mixture was stirred at 70° C. for 12 hours. THF was distilled off and extracted with ethyl acetate (×3). The combined organic layer was dried over Na2SO4, filtered and distilled off to get the crude residue that was washed with 2% Ethyl acetate-hexane to obtain the desired compound (0.17 g, 85%).
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