Hydrochloric Acid → HCID 22261055, compound

Participants

Reaction Steps

A total of 160 mg of 6-acetylamino-3-(3-fluoro-phenyl)-1H-indazole-5-carboxylic acid ethyl ester obtained in Production Example II-7-e was dissolved in 3 ml of ethanol and 1 ml of 5 N aqueous sodium hydroxide solution, and the solution was stirred at 50° C. for 2 hours. After cooling to room temperature, 1 N hydrochloric acid was added and the mixture was extracted with ethyl acetate. The resulting organic layer was washed with brine, dried over magnesium sulfate and the solvent was evaporated, to give 155 mg of the title compound as pale yellow crystals.

Provenance & Evidence