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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 656871Generated: October 25, 2026

Hydrochloric Acid → 1-[2-(4-Amino-1-piperidinyl)ethyl]-7-fluoro-1,5-naphthyridin-2(1H)-one Dihydrochloride

https://huagongshe.com/reaction/656871

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactanttert-butyl (1-(2-(7-fluoro-2-oxo-1,5-naphthyridin-1(2H)-yl)ethyl)piperidin-4-yl)carbamateHCID 57815181—
SolventMethanolHCID 887—
SolventChloroformHCID 6212—
Solvent1,4-DioxaneHCID 31275—
Product1-[2-(4-Amino-1-piperidinyl)ethyl]-7-fluoro-1,5-naphthyridin-2(1H)-one DihydrochlorideHCID 67499221—

Reaction Steps

To a solution of 1,1-dimethylethyl {1-[2-(7-fluoro-2-oxo-1,5-naphthyridin-1(2H)-yl)ethyl]-4-piperidinyl}carbamate (1.591 g, 4.079 mmol) in chloroform (15 ml) and MeOH (15 ml) was added 4M HCl in 1,4-dioxane (15 ml). The reaction was stirred at rt for 0.5 h before evaporation to provide the desired compound as a slightly impure white solid which was used without further purification (1.633 g, 110%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08071592B2
Source datasetuspto-grants-2011_12
ORD IDord-fadced28725e4f08a954489f35126434
Source noteuspto-grants-2011_12