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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1105797Generated: October 30, 2026

Hydrogen Bromide → HCID 15572242, compound

https://huagongshe.com/reaction/1105797

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrogen BromideHCID 260—
ReactantSodium BicarbonateHCID 516892—
Reactant6,8-dimethoxy-3,4-dihydro-2H-naphthalen-1-oneHCID 11447075—
SolventAcetic AcidHCID 176—
ProductHCID 15572242HCID 15572242—

Reaction Steps

The 6,8-dimethoxy-1-tetralone (3.0 g; 14.0 mmoles) was refluxed overnight with 20 ml of 48% aqueous hydrogen bromide and 20 ml of glacial acetic acid. After cooling to room temperature, the reaction mixture was neutralized with a saturated sodium bicarbonate solution and extracted with ethyl acetate. The combined extracts were dried (brine, magnesium sulfate) and concentrated to afford a red solid which upon trituration with ether gave the desired compound as an off-white solid, 1.77 g (71%); m.p. 209°-210° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04310529
Source datasetuspto-grants-1982_01
ORD IDord-1b1ede3195594cc4a287111cbfda2113
Source noteuspto-grants-1982_01