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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2165679Generated: October 31, 2026

Fluoroquinolonic acid → 1-Cyclopropyl-7-(3-ethenyl-1-piperazinyl)-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid

https://huagongshe.com/reaction/2165679

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFluoroquinolonic acidHCID 483180—
Reactant2-EthenylpiperazineHCID 15382901—
SolventPyridineHCID 1049—
Product1-Cyclopropyl-7-(3-ethenyl-1-piperazinyl)-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acidHCID 1538291012.7%

Reaction Conditions

Temperature140 °C

Reaction Steps

A mixture of 1.3 g of 7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid, 1.9 g of 3-ethenylpiperazine and 15 ml of pyridine is heated at 140° C. in a pressure bottle for 18 hours and then purified as described in Example 101, giving 210 mg of the desired product.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04940710
Source datasetuspto-grants-1990_07
ORD IDord-ec3bdeaa67154f22b568609b9d98bee3
Source noteuspto-grants-1990_07