Methylamine → 1-(5-Amino-2,4-difluorophenyl)-6-fluoro-5,8-dimethyl-7-methylamino-4-oxo-1,4-dihydroquinoline-3-carboxylic Acid

HRID 369285Notes

Reaction equation

[CH3:1][NH2:2].[NH2:3][C:4]1[C:5]([F:29])=[CH:6][C:7]([F:28])=[C:8]([N:10]2[C:19]3[C:14](=[C:15]([CH3:23])[C:16]([F:22])=[C:17](F)[C:18]=3[CH3:20])[C:13](=[O:24])[C:12]([C:25]([OH:27])=[O:26])=[CH:11]2)[CH:9]=1>N1C=CC=CC=1>[NH2:3][C:4]1[C:5]([F:29])=[CH:6][C:7]([F:28])=[C:8]([N:10]2[C:19]3[C:14](=[C:15]([CH3:23])[C:16]([F:22])=[C:17]([NH:2][CH3:1])[C:18]=3[CH3:20])[C:13](=[O:24])[C:12]([C:25]([OH:27])=[O:26])=[CH:11]2)[CH:9]=1

Participants

Conditions

Temperature: 40 °C

Procedure

Pyridine (300 mg) and a 40% aqueous solution (150 mg) of methylamine were added to 1-(5-amino-2,4-difluorophenyl)-6,7-difluoro-5,8-dimethyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (110 mg), and the mixture was heated and stirred at 40° C. for 8 days. The solvent and the like were distilled off under reduced pressure, and ethanol (0.5 ml) was added to the residue. The mixture was left to stand for 3 days, and solids deposited were collected by filtration and washed with ethanol and diethyl ether to obtain the title compound (20 mg) as a pale yellow powder.

Workup

temperaturethe mixture was heated
distillationThe solvent and the like were distilled off under reduced pressure, and ethanol (0.5 ml)
additionwas added to the residue
waitThe mixture was left
waitto stand for 3 days
filtrationsolids deposited were collected by filtration
washwashed with ethanol and diethyl ether

Sources & evidence

ORD record: ord-8c4420c2d4d742018160f6f143d7d67c
Source dataset: uspto-grants-2000_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06136823

Reaction notes

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