[C:1]([NH:9][C:10]1[N:14](C(=O)C2C=CC=CC=2)[N:13]=[C:12]([C:23]2[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=2)[CH:11]=1)(=[O:8])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[OH-].[K+]>>[C:1]([NH:9][C:10]1[CH:11]=[C:12]([C:23]2[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=2)[NH:13][N:14]=1)(=[O:8])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1A suspension of 100 mg (0.27 mmoles) of 5-benzoylamino-3-phenyl-1-benzoylpyrazole in 4 ml of 10% (w/v) aqueous potassium hydroxide was heated in a water bath maintained at 100° C. for five minutes. During this time the reaction mixture remained a suspension. The cooled suspension was filtered and washed with water, then air-dried. There was obtained 48 mg (0.18 mmoles, 67%) of the title compound as a white solid.
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