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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 583820Generated: October 31, 2026

Potassium Carbonate → HCID 22324281, compound

https://huagongshe.com/reaction/583820

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium CarbonateHCID 11430—
Reactant1,2-Difluoro-4-nitrobenzeneHCID 123053—
Reactantpyridine-4-thiolHCID 178418431—
SolventWaterHCID 962—
SolventDimethylformamideHCID 6228—
SolventEthyl AcetateHCID 8857—
ProductHCID 22324281HCID 22324281—

Reaction Conditions

Temperature40 °C

Reaction Steps

21 g (188.9 mmol) of 4-mercaptopyridine, 30.05 g (188.9 mmol) of 3,4-difluoro-nitrobenzene and 60.05 g (434.5 mmol) of potassium carbonate are dissolved in dimethylformamide, and the mixture is stirred at 40° C. for 3 hours. The reaction solution is then diluted with 500 mL of ethyl acetate and 300 mL of water. The aqueous phase is extracted five times with in each case 100 mL of ethyl acetate. The combined organic phases are washed with 200 mL of saturated sodium chloride solution, dried over sodium sulphate and concentrated under reduced pressure using a rotary evaporator. The residue is purified by MPLC (mobile phase: ethyl acetate:cyclohexane 1:1).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06924290B2
Source datasetuspto-grants-2005_08
ORD IDord-5bef5a8277794de1a9f9a81cf3ccb7f3
Source noteuspto-grants-2005_08