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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1922532Generated: October 31, 2026

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

https://huagongshe.com/reaction/1922532

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantSodium BicarbonateHCID 516892—
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-yl)amine (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 bicarbonate, 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-dihydronaphthalen-2(1H)-one (0.71 g, 78% yield).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08173841B2
Source datasetuspto-grants-2012_05
ORD IDord-8913e399ee2c4d0fba23a248999ccecb
Source noteuspto-grants-2012_05