Boron tribromide → 1-(4-Fluorophenyl)-1H-indazol-5-ol

Beteiligte Stoffe

Reaktionsschritte

1-(4-Fluorophenyl)-5-methoxy-1H-indazole (137e, 1.0 mmol, 242 mg) was dissolved in dichloromethane (4 ml) and BBr3 (4 ml, 1 M in dichloromethane) was added. The reaction mixture was stirred in r.t. overnight before it was quenched with water (20 ml). The product was extracted with dichloromethane (2×20 ml) and washed with sat. NaHCO3. The organic phase was dried over Na2SO4, concentrated and purified by flash chromatography on silica gel (heptane-ethyl acetate).

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