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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1884613Generated: October 29, 2026

Hydrochloric Acid → 4-(1-Aminonaphthalen-4-yloxy)-2h-pyran-2-one hydrochloride

https://huagongshe.com/reaction/1884613

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant[4-(2-oxo-2H-pyran-4-yloxy)-naphthalen-1-yl]-carbamic acid tert-butyl esterHCID 11439599—
SolventDiethyl EtherHCID 3283—
Solvent1,4-DioxaneHCID 31275—
Product4-(1-Aminonaphthalen-4-yloxy)-2h-pyran-2-one hydrochlorideHCID 23505806—

Reaction Steps

A mixture of [4-(2-oxo-2H-pyran-4-yloxy)-naphthalen-1-yl]-carbamic acid tert-butyl ester (0.287 g) and HCl (2 mL of a 4N solution in dioxane) in 4 mL of dioxane was stirred overnight, diluted with ether and filtered. The filtrate was dried providing 4-(4-amino-naphthalen-1-yloxy)-pyran-2-one hydrochloride salt.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06765009B2
Source datasetuspto-grants-2004_07
ORD IDord-ae4974a70fd049d8ad985f4467709788
Source noteuspto-grants-2004_07