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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1804699Generated: November 3, 2026

Potassium Carbonate → 4-Nitro-1-(2-pyrrolidin-1-yl-ethyl)-1H-pyrazole

https://huagongshe.com/reaction/1804699

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium CarbonateHCID 11430—
Reactant4-nitro-1H-pyrazoleHCID 16376—
Reactant1-(2-Chloroethyl)pyrrolidine hydrochlorideHCID 81668—
SolventAcetoneHCID 180—
SolventWaterHCID 962—
Product4-Nitro-1-(2-pyrrolidin-1-yl-ethyl)-1H-pyrazoleHCID 67481406—

Reaction Steps

N-(2-chloroethyl)pyrrolidine hydrochloride (752 mg, 4.42 mmol), potassium carbonate (0.534 ml, 8.84 mmol) and 4-nitro-1H-pyrazole (500 mg, 4.42 mmol) were combined in acetone (20 ml) and the reaction was stirred at reflux for 16 hours. The reaction mixture was diluted with 75 mL water and extracted with ethyl acetate (3×20 mL). The combined organics were dried (Na2SO4), filtered, and concentrated to give the title compound. MS (ESI(+)) m/e 210.9 (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08354422B2
Source datasetuspto-grants-2013_01
ORD IDord-fe86f9390b31462fb10f6df2dc4b38ce
Source noteuspto-grants-2013_01