Hydrochloric Acid → 5-Amino-1-(6-amino-3,5-difluoropyridin-2-yl)-6,7,8-trifluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid

Participants

Reaction Steps

To 1.5 ml of the mixed solution (1:1) of 4N hydrochloric acid and acetic acid was added 145 mg of ethyl 5-amino-1-(6-amino-3,5-difluoropyridin-2-yl)-6,7,8-trifluoro-4-oxo-1,4-dihydroquinoline-3-carboxylate, and the mixture was heated under reflux for 17 hours with stirring and allowed to cool. The precipitate was collected by filtration, and washed with ethanol and to obtain 129 mg of the title compound as a yellow powder.

Provenance & Evidence