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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 369328Generated: October 30, 2026

Pyridine → HCID 23284758, compound

https://huagongshe.com/reaction/369328

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyridineHCID 1049—
ReactantMethylamineHCID 6329—
ReactantHCID 23284698HCID 23284698—
CatalystAcetic AcidHCID 176—
SolventEthanolHCID 702—
ProductHCID 23284758HCID 2328475832.1%

Reaction Conditions

Temperature30 °C

Reaction Steps

Pyridine (300 mg) and a 40% aqueous solution (300 mg) of methylamine were added to 1-(5-amino-2,4-difluorophenyl)-6,7-difluoro-5-hydroxy-8-methyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (100 mg), and the mixture was stirred at 30° C. for 2 days. Acetic acid (1 drop) and ethanol (1 ml) were added to the reaction mixture, and the solvent was distilled off. Methanol was added to the residue, and solids were collected by filtration to obtain the title compound (33 mg) as a brown powder.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06136823
Source datasetuspto-grants-2000_10
ORD IDord-402a4f0415ec48a398db1da2eba8d09c
Source noteuspto-grants-2000_10