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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 910609Generated: October 29, 2026

Water → 5-Bromo-3-methyl-4(3H)-pyrimidinone

https://huagongshe.com/reaction/910609

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantMethyl iodideHCID 6328—
ReactantPotassium CarbonateHCID 11430—
Reactant4(3H)-Pyrimidinone, 5-bromo-HCID 88256—
SolventDimethylformamideHCID 6228—
Product5-Bromo-3-methyl-4(3H)-pyrimidinoneHCID 82463554%

Reaction Steps

5-Bromopyrimidin-4(3H)-one (578 mg) was dissolved in N,N-dimethylformamide (15 mL), and potassium carbonate (685 mg) and methyl iodide (247 μL) were added, followed by stirring at room temperature for 24 hours. Water was added to the reaction mixture, followed by extraction with chloroform. The organic layer was washed with saturated brine and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure, and the resulting residue was purified by silica gel column chromatography (hexane:ethyl acetate=1:1) to obtain 5-bromo-3-methylpyrimidin-4(3H)-one (337 mg) as a white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08022208B2
Source datasetuspto-grants-2011_09
ORD IDord-625a9a8e705a4040969997894f676f4c
Source noteuspto-grants-2011_09