[CH:1]1([N:6]2[C:14]([C:15]3[CH:20]=[CH:19][C:18]([O:21]C)=[CH:17][CH:16]=3)=[C:13]3[C:8]([C:9]([F:23])=[CH:10][CH:11]=[CH:12]3)=[N:7]2)[CH2:5][CH2:4][CH2:3][CH2:2]1.B(Br)(Br)Br.C1CCCCC=1>>[CH:1]1([N:6]2[C:14]([C:15]3[CH:16]=[CH:17][C:18]([OH:21])=[CH:19][CH:20]=3)=[C:13]3[C:8]([C:9]([F:23])=[CH:10][CH:11]=[CH:12]3)=[N:7]2)[CH2:2][CH2:3][CH2:4][CH2:5]1Prepared according to Method D step C from 2-cyclopentyl-7-fluoro-3-(4-methoxyphenyl)-2H-indazole (0.055 g, 0.177 mmol), boron tribromide (0. 70 mL, 0.74 mmol) and 0.3 mL of cyclohexene to give the product (0.03 g) as an amber solid.
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