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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 54668Generated: October 29, 2026

Hydrogen Bromide → 7-Methoxy-4-(3,4-dihydroxyphenyl)-1,2,3,4-tetrahydroisoquinoline hydrobromide

https://huagongshe.com/reaction/54668

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrogen BromideHCID 260—
Reactant7-Methoxy-4-(3,4-dimethoxyphenyl)-1,2,3,4-tetrahydroisoquinolineHCID 14719548—
Product7-Methoxy-4-(3,4-dihydroxyphenyl)-1,2,3,4-tetrahydroisoquinoline hydrobromideHCID 19959703—

Reaction Steps

640 mg of 7-methoxy-4-(3,4-dimethoxyphenyl)-1,2,3,4-tetrahydroisoquinoline was dissolved in 13 ml of 48% aqueous hydrogen bromide, and the mixture was heated under reflux under an argon gas stream for 3 hours. The reaction solution was cooled, and crystals which separated out were collected, affording 580 mg of 7-methoxy-4-(3,4-dihydroxyphenyl)-1,2,3,4-tetrahydroisoquinoline hydrobromide.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05623074
Source datasetuspto-grants-1997_04
ORD IDord-f5fe4cfcbae04d3f976fa5d7725eebce
Source noteuspto-grants-1997_04