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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1432828Generated: November 2, 2026

Hydrochloric Acid → 8-Amino-3,4-dihydro-1H-naphthalen-2-one

https://huagongshe.com/reaction/1432828

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantSodiumHCID 5360545—
Reactant7-Ethoxy-5,8-dihydronaphthalen-1-amineHCID 23066996—
SolventTetrahydrofuranHCID 8028—
Product8-Amino-3,4-dihydro-1H-naphthalen-2-oneHCID 2306699378%

Reaction Conditions

Temperature40 °C

Reaction Steps

To a stirred solution of 7-ethoxy-5,8-dihydronaphthalen-1-ylamine (1.07 g, 5.65 mmol) in tetrahydrofuran (30 mL) was added solution of aqueous 2N HCl (10 mL), and stirred at 40° C. for 1 hour. The mixture was neutralized with addition of sodium bicorbonate, and the product was extracted with ethylacetate. The organic layer was washed with water, dried over Na2SO4, filtered, and concentrated under reduced pressure to afford 8-amino-3,4-dihydro-1H-naphthalen-2-one (0.71 g; 78% yield).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07612113B2
Source datasetuspto-grants-2009_11
ORD IDord-045bb839e8124d14ae6db886231c8f34
Source noteuspto-grants-2009_11