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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 427461Generated: October 29, 2026

Water → HCID 18357051, compound

https://huagongshe.com/reaction/427461

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantPotassium CarbonateHCID 11430—
ReactantBenzoic acid, 4-fluoro-, ethyl esterHCID 67976—
Reactant1-(4-Pyridyl)piperazineHCID 70517—
SolventDimethyl SulfoxideHCID 679—
ProductHCID 18357051HCID 18357051—

Reaction Steps

A solution of 4-(4-pyridyl)piperazine (9.78 g), ethyl 4-fluorobenzoate (9.7 ml) and powdered potassium carbonate (9.9 g) in dried dimethylsulphoxide (60 ml) was heated at 95° C. for 18 hours. The mixture was poured into water (1200 ml) and stirred for 30 minutes. The precipitate was filtered off, washed with water and dried. The solid was purified by flash column chromatography on alumina (ICN alumina N32-63) using 1% methanol/dichloromethane as eluent, to give ethyl 4-[4-(4-pyridyl)-1-piperazinyl]benzoate (4.85 g) as a cream solid, mp 162-164° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06313127B1
Source datasetuspto-grants-2001_11
ORD IDord-9bac4581b26e4632ac04677ad9ec4e1e
Source noteuspto-grants-2001_11