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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1597375Generated: November 1, 2026

Sodium Carbonate → 4-Bromo-3-methyl-isoquinoline

https://huagongshe.com/reaction/1597375

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium CarbonateHCID 10340—
Reactant3-MethylisoquinolineHCID 14306—
ReactantBromineHCID 24408—
SolventNitrobenzeneHCID 7416—
Product4-Bromo-3-methyl-isoquinolineHCID 377770372.3%

Reaction Conditions

Temperature180 °C

Reaction Steps

To 3-methylisoquinoline (0.500 g, 3.49 mmol) in 1 ml nitrobenzene, bromine (0.196 ml, 3.84 mmol) was added and the contents heated in a sealed tube at 180° C. for 4 hours. The solution was cooled to room temperature, neutralized with solid sodium carbonate (pH=8) and extracted with ethyl acetate (2×20 ml). The organic layer was dried over sodium sulfate, filtered, concentrated and column purified (hexane:EtOAc; 4.5:0.5) to give 0.560 g (72%) of the product as syrup.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06294566B1
Source datasetuspto-grants-2001_09
ORD IDord-0d398618c3a1460da0c39bc9dc163764
Source noteuspto-grants-2001_09