Water → 7-chloro-6-fluoro-1-(5-fluoro-pyridin-2-yl)-4-oxo-1,4-dihydro-quinoline-3-carboxylic Acid

HRID 1163331Notes

Reaction equation

C([O:3][C:4]([C:6]1[C:15](=[O:16])[C:14]2[C:9](=[CH:10][C:11]([Cl:18])=[C:12]([F:17])[CH:13]=2)[N:8]([C:19]2[CH:24]=[CH:23][C:22]([F:25])=[CH:21][N:20]=2)[CH:7]=1)=[O:5])C.O>C(O)(=O)C.Cl>[Cl:18][C:11]1[CH:10]=[C:9]2[C:14]([C:15](=[O:16])[C:6]([C:4]([OH:5])=[O:3])=[CH:7][N:8]2[C:19]2[CH:24]=[CH:23][C:22]([F:25])=[CH:21][N:20]=2)=[CH:13][C:12]=1[F:17]

Participants

Conditions

Temperature: 90 °C

Procedure

A suspension of 0.5 g 7-chloro-6-fluoro-1-(5-fluoro-pyridin-2-yl)-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid ethyl ester (1.37 mmol) in a mixture of 1.5 ml acetic acid and 1.5 ml 25% HCl was stirred at 90° C. over night. The reaction was monitored by HPLC. The suspension was poured into 50 ml water, the colorless crystals filtered and dried.

Workup

filtrationthe colorless crystals filtered
customdried

Sources & evidence

ORD record: ord-6673dc493cf14f4fb829125619d9ed68
Source dataset: uspto-grants-2010_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07820823B2

Reaction notes

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