126362-90-1

Upstream product

• 126362-85-4 Ethyl 7-Chloro-6-fluoro-1,4-dihydro-1-(4-nitrophenyl)-4-oxoquinoline-3-carboxylate 
• 350-46-9 4-Fluoronitrobenzene 
• 75073-15-3 ethyl 7-chloro-6-fluoro-4-oxo-1,4-dihydroquinoline 3-carboxylate 
• 126362-87-6 7-Chloro-1-(4-nitrophenyl)-6-fluoro-1,4-dihydro-4-oxoquinoline-3-carboxylic Acid 

Downstream Products

• 98105-79-4 7-Chloro-6-fluoro-1-(4-fluorophenyl)-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid 

Relevant academic research and scientific papers

SYNTHESIS OF SOME 1-ARYL-1,4-DIHYDRO-4-OXOQUINOLINE-3-CARBOXYLIC ACIDS AND THEIR ANTIBACTERIAL ACTIVITY

1,4-Dihydro-4-oxoquinoline-3-carboxylic acids VIIIc and VIIId were prepared via their ethyl esters VIIIa and VIIIb, which were obtained by a direct arylation of ethyl 7-chloro-6-fluoro-1,4-dihydro-4-oxoquinoline-3-carboxylate (VIa).When treated with piperazine or N-methylpiperazine compound VIIId yields VIIIe or VIIIf, respectively.Reduction of VIIId, VIIIe, and VIIIf with ferrous sulfate yields VIIIg, VIIIh, and VIIIi respectively.Diazotization and introduction of fluorine into VIIIg using hydrogen fluoride-pyridine yields VIIIj.The compounds prepared were testedfor their antimicrobial activity in vitro.