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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2241255Generated: November 2, 2026

4-Fluoroaniline → 5-bromo-2-(4-fluorophenylamino)-3-methylpyrimidin-4(3H)-one

https://huagongshe.com/reaction/2241255

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-FluoroanilineHCID 9731—
ReactantSodium BicarbonateHCID 516892—
Reactant5-bromo-2-chloro-3-methylpyrimidin-4(3H)-oneHCID 67348611—
Solvent1-ButanolHCID 263—
SolventEthyl AcetateHCID 8857—
Product5-bromo-2-(4-fluorophenylamino)-3-methylpyrimidin-4(3H)-oneHCID 6851519099%

Reaction Conditions

Temperature60 °C

Reaction Steps

A mixture of 5-bromo-2-chloro-3-methylpyrimidin-4(3H)-one (0.100 g, 0.448 mmol; prepared according to the procedure of Example 46, Step B), 4-fluorobenzenamine (0.056 ml, 0.582 mmol) and NaHCO3 (0.150 g, 1.79 mmol) in n-BuOH (3 mL) was stirred at 60° C. overnight. The reaction mixture was cooled to room temperature and then diluted with EtOAc. The EtOAc layer washed with H2O and saturated aqueous NaCl. The aqueous phase was re-extracted with EtOAc. The combined EtOAc layers were dried (Na2SO4), filtered and concentrated to yield the desired product (0.132 g, 99%) as a pale yellow solid that was used without further purification.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07723330B2
Source datasetuspto-grants-2010_05
ORD IDord-14202cdaf4284259b330f52746160049
Source noteuspto-grants-2010_05