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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1089797Generated: November 2, 2026

Hydrogen Bromide → 4-(3,4-Dihydroxyphenyl)-8-methyl-1,2,3,4-tetrahydroisoquinoline hydrobromide

https://huagongshe.com/reaction/1089797

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrogen BromideHCID 260—
Reactant4-(3,4-Dimethoxyphenyl)-8-methyl-1,2,3,4-tetrahydroisoquinolineHCID 10517097—
Product4-(3,4-Dihydroxyphenyl)-8-methyl-1,2,3,4-tetrahydroisoquinoline hydrobromideHCID 14719552—

Reaction Steps

To 420 mg of 4-(3,4-dimethoxyphenyl)-8-methyl-1,-2,3,4-tetrahydroisoquinoline, was added 48% hydrobromic acid, and the mixture was heated under reflux for 3 hours. After about 10 minutes, the crystals become separated out. The reaction mixture was cooled, and the crystals were collected by filtration, giving 420 mg of 4-(3,4-dihydroxyphenyl)-8-methyl-1,2,3,4-tetrahydroisoquinoline hydrobromide.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05079256
Source datasetuspto-grants-1992_01
ORD IDord-6259b20b65084715a82c162a18778c04
Source noteuspto-grants-1992_01