Hydrogen Bromide → HCID 13772786, compound

Participants

Reaction Conditions

Reaction Steps

To 700 mg (1.79 mmol) of the 1-ethyl-6-fluoro-1,4-dihydro-8-methoxy-7-[2-[(methylamino)methyl]-4-thiazolyl]-4-oxo-3-quinolinecarboxylic acid was added 8 ml of hydrobromic acid in acetic acid and the mixture was heated to 70° C. After four hours 8 ml more hydrobromic acid was added and the mixture stirred overnight. The solids were collected, dissolved in aqueous ammonia and concentrated to one fourth volume. Filtration gave 580 mg of 1-ethyl-6-fluoro-1,4-dihydro-8-hydroxy-7-[2-[(methylamino)methyl]-4-thiazolyl]-4-oxo-3-quinolinecarboxylic acid, mp 242°-246° C.

Provenance & Evidence