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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 478636Generated: October 30, 2026

Acetonitrile → [4-(2-Methoxy-ethyl)-piperazin-1-yl]-benzoic acid methyl ester

https://huagongshe.com/reaction/478636

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAcetonitrileHCID 6342—
ReactantPotassium CarbonateHCID 11430—
Reactant2-Bromoethyl methyl etherHCID 80972—
ReactantMethyl 4-(piperazin-1-yl)benzoateHCID 15429161—
Product[4-(2-Methoxy-ethyl)-piperazin-1-yl]-benzoic acid methyl esterHCID 69996255—

Reaction Conditions

Temperature80 °C

Reaction Steps

4-(Piperazin-1-yl)-benzoic acid methyl ester (19 mmol), 2-bromoethylmethylether (21 mmol), and potassium carbonate (22.8 mmol) are suspended in acetonitrile (50 ml) and stirred at 80° C. for 8 hours. After evaporation of the solvent, the residue is dissolved in water and extracted three times with CH2Cl2. The extract is dried over sodium sulfate and evaporated. The residue is suspended in diethylether/pentane and the solid filtered of and dried (vacuum). A powder with mp. 103-105° C. is obtained.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06642239B2
Source datasetuspto-grants-2003_11
ORD IDord-1cd1d1cbee6746bc99383690b7f9f84c
Source noteuspto-grants-2003_11