Methylamine → 1-(6-Amino-3-fluoropyridin-2-yl)-8-chloro-6-fluoro-7-methylamino-4-oxo-1,4-dihydroquinoline-3-carboxylic Acid

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Reaction Steps

1-(6-Amino-3-fluoropyridin-2-yl)-8-chloro-6,7-difluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (45 mg) and a 40% aqueous solution (50 mg) of methylamine were added to pyridine (200 mg), and the mixture was stirred at room temperature for 5 hours. The solvent was distilled off under reduced pressure, and ethanol (0.5 ml) was added to the residue. Deposits were collected by filtration and washed successively with methanol and diisopropyl ether to obtain the title compound (182 mg) as a yellow powder.

Provenance & Evidence