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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2373600Generated: October 27, 2026

Hydrochloric Acid → 6-Fluoro-2-methyl-5-(1-piperazinyl)quinoline

https://huagongshe.com/reaction/2373600

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant1,1-Dimethylethyl-4-(6-fluoro-2-methyl-5-quinolinyl)-1-piperazinecarboxylateHCID 86608441—
Solvent1,4-DioxaneHCID 31275—
Product6-Fluoro-2-methyl-5-(1-piperazinyl)quinolineHCID 57444314156.2%

Reaction Steps

A solution of hydrogen chloride in dioxane (4M, 4 mL) was added to a solution of 1,1-dimethylethyl-4-(6-fluoro-2-methyl-5-quinolinyl)-1-piperazinecarboxylate (0.178 g) in dioxane (4 mL) at 0° C. The resulting mixture was warmed to room temperature and stirred for 15 h. The mixture was concentrated in vacuo and partitioned between aqueous sodium hydroxide solution and DCM. The combined organic phases were washed with brine, dried over sodium sulfate and concentrated to afford the title compound (198 mg, 100% yield).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07459456B2
Source datasetuspto-grants-2008_12
ORD IDord-83a3fa20bad24209b7ff860d44b634b8
Source noteuspto-grants-2008_12