Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 633697Generated: October 25, 2026

Hydrogen Bromide → 2-Bromo-1-(5-methylpyridin-3-yl)ethan-1-one hydrobromide

https://huagongshe.com/reaction/633697

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrogen BromideHCID 260—
ReactantDiethyl EtherHCID 3283—
ReactantBromineHCID 24408—
Reactant1-(5-Methylpyridin-3-yl)ethan-1-oneHCID 577569—
SolventAcetic AcidHCID 176—
Product2-Bromo-1-(5-methylpyridin-3-yl)ethan-1-one hydrobromideHCID 75481268183.3%

Reaction Steps

300 mg (2.22 mmol) of 1-(5-methylpyrid-3-yl)ethanone are dissolved in 15 mL of glacial acetic acid. 365 μl (2.22 mmol) of hydrobromic acid and 126 μl (2.44 mmol) of bromine are added to the medium. The reaction mixture is placed under magnetic stirring at room temperature for 2 hours. Ethyl ether is added to the solution until a precipitate appears. The precipitate corresponding to 2-bromo-1-(5-methylpyrid-3-yl)ethanone hydrobromide is filtered off, washed with ether and dried. The 600 mg of product obtained have the following characteristics:

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09321790B2
Source datasetuspto-grants-2016_04
ORD IDord-4e15c3dde3a24900aa201c09c9c8dde5
Source noteuspto-grants-2016_04