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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1787688Generated: November 1, 2026

Hydrochloric Acid → (2-{4-[3-Fluoro-6-(methyloxy)-1,5-naphthyridin-4-yl]-1-piperazinyl}ethyl)amine

https://huagongshe.com/reaction/1787688

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant1,4-DioxaneHCID 31275—
Reactant1,1-Dimethylethyl (2-{4-[3-fluoro-6-(methyloxy)-1,5-naphthyridin-4-yl]-1-piperazinyl}ethyl)carbamateHCID 57599576—
SolventMethanolHCID 887—
Product(2-{4-[3-Fluoro-6-(methyloxy)-1,5-naphthyridin-4-yl]-1-piperazinyl}ethyl)amineHCID 57599574—

Reaction Steps

To a solution of 1,1-dimethylethyl (2-{4-[3-fluoro-6-(methyloxy)-1,5-naphthyridin-4-yl]-1-piperazinyl}ethyl)carbamate (725 mg, 1.79 mmol) in MeOH (9 mL) at 25° C. was added dropwise a 4M solution of HCl in dioxane (3.1 mL, 12.53 mmol). After 12 h, the solution was concentrated the residue neutralized using excess MP carbonate resin in DCM affording the free amine which was used without further purification: LCMS (ES) m/e 306 (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07511035B2
Source datasetuspto-grants-2009_03
ORD IDord-01c9682837ea4c8d9fe7904aabe24c3b
Source noteuspto-grants-2009_03