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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 248528Generated: October 30, 2026

1-Ethyl-6,7-difluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid → HCID 19763587, compound

https://huagongshe.com/reaction/248528

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-Ethyl-6,7-difluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acidHCID 800521—
ReactantHCID 19763538HCID 19763538—
SolventPyridineHCID 1049—
ProductHCID 19763587HCID 19763587—

Reaction Steps

A 1.0 g portion of 3-(1-methyl-1H-pyrazol-3-yl)piperazine and 508 mg of 1-ethyl-6,7-difluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid were dissolved in 5 ml of pyridine and heated at 85°-95° C. for 18 hours, in a pressure bottle which had been evacuated and filled with argon. Methanol was added and the solid collected, giving 610 mg of 1-ethyl-6-fluoro-1,4-dihydro-7-[3-(1-methyl-1H-pyrazol-3-yl)-1-piperazinyl]-4-oxo-3-quinolinecarboxylic acid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05210193
Source datasetuspto-grants-1993_05
ORD IDord-d8edb6c6c3b2478686ffd572bb122c21
Source noteuspto-grants-1993_05