Methyl iodide → 7-fluoro-6-(2-fluoro-phenylamino)-1,3-dimethyl-1H-indazole-5-carboxylic acid methyl ester

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Reaction Steps

To a solution of 7-fluoro-6-(2-fluoro-phenylamino)-3-methyl-2H-indazole-5-carboxylic acid methyl ester (146 mg, 0.46 mmol) in DMF (5 ml) were added potassium carbonate (95 mg, 069 mmol) and iodomethane (0.034 mL, 0.55 mmol). The reaction was stirred at room temp overnight, diluted with EtOAc and washed with H2O. The organic fraction was dried over MgSO4 and concentrated under reduced pressure. Silica gel chromatography (EtOAc:Hexanes=75:25) yielded 40 mg (26%) of the title compound and 81 mg (53%) of 7-fluoro-6-(2-fluoro-phenylamino)-1,3-dimethyl-1H-indazole-5-carboxylic acid methyl ester.

Provenance & Evidence