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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1837874Generated: October 31, 2026

Hydrochloric Acid → 5,6,7,8-Tetrahydro-1,8-naphthyridin-2-butyric acid hydrochloride

https://huagongshe.com/reaction/1837874

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantEthyl 4-(5,6,7,8-tetrahydro-1,8-naphthyridin-2-yl)butanoateHCID 22594332—
Product5,6,7,8-Tetrahydro-1,8-naphthyridin-2-butyric acid hydrochlorideHCID 69776037—

Reaction Steps

Ester 2-4 (1.8 g, 7.25 mmol) in 36 mL 6 N HCl was heated at 50° C. for 4 h, then concentrated, providing 2-5 as a yellow solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06784190B2
Source datasetuspto-grants-2004_08
ORD IDord-9bcbd9d6c65c439889eb9b922c4c3bc8
Source noteuspto-grants-2004_08