Dimethylformamide → 4-[3-(3-Trifluoromethyl-benzenesulfonylamino)-benzo[1,2,4]triazin-7-yloxy]-pyridine-2-carboxylic acid methyl amide trifluoroacetate salt

Participants

Reaction Conditions

Reaction Steps

100 mg (0.337 mmol, 1.0 equivalent) of 4-(3-amino-benzo[1,2,4]triazin-7-yloxy)-pyridine-carboxylic acid methylamide were dissolved in 2 mL of anhydrous dimethylformamide with heating to about 100° C. 45.4 mg (0.405 mmol, 1.2 equivalent) of solid tert-BuOK was added to the solution. The resulting dark-red solution was stirred at 100° C. for 30 min, then it was allowed to cool down to ambient temperature. 100 mg (0.405 mmol, 1.2 equivalent) of 3-trifluoromethyl-benzenesulfonyl chloride was added to the mixture via a syringe. It was allowed to stir at ambient temperature for 2 hours. The reaction mixture was filtered through 0.22 g syringe filter and purified by reverse-phase preperative HPLC using acetonitrile/water mixture with 0.1% of TFA.

Provenance & Evidence