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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1292988Generated: October 26, 2026

Potassium Carbonate → 1-(5-Chloro-2-nitrophenyl)-4-methylpiperazine

https://huagongshe.com/reaction/1292988

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium CarbonateHCID 11430—
Reactant1-MethylpiperazineHCID 53167—
Reactant4-Chloro-2-fluoro-1-nitrobenzeneHCID 69691—
SolventWaterHCID 962—
SolventDimethylformamideHCID 6228—
SolventEthyl AcetateHCID 8857—
Product1-(5-Chloro-2-nitrophenyl)-4-methylpiperazineHCID 2829618—

Reaction Conditions

Temperature100 °C

Reaction Steps

A mixture of 4-chloro-2-fluoro-nitrobenzene (28.5 mmol), 1-methylpiperazine (28.5 mmol) and K2CO3 (37.0 mmol) in DMF is stirred at 100° C. for 16 h and diluted with water and EtOAc. The phases are separated and the aqueous phase is extracted with EtOAc. The organic phase and the extracts are combined, washed sequentially with water and brine, dried over Na2SO4 and dried in vacuo. The resultant residue is chromatographed (silica gel, 10% methanol in EtOAc as eluent) to afford the title product.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07238696B2
Source datasetuspto-grants-2007_07
ORD IDord-3eaad978cd204cc088f9ef21a83d5b1e
Source noteuspto-grants-2007_07