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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1878980Generated: November 2, 2026

Hydrochloric Acid → 1-Ethyl-4-[2-fluoro-3-(methylsulfonyl)phenyl]piperazine

https://huagongshe.com/reaction/1878980

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantIodoethaneHCID 6340—
ReactantPotassium CarbonateHCID 11430—
Reactant1-[2-Fluoro-3-(methylsulfonyl)phenyl]piperazineHCID 57448050—
SolventAcetonitrileHCID 6342—
Product1-Ethyl-4-[2-fluoro-3-(methylsulfonyl)phenyl]piperazineHCID 57448030—

Reaction Steps

Preparation according to Example 1: 1-[2-fluoro-3-(methylsulfonyl)phenyl]piperazine (0.13 g, 0.52 mmol), acetonitrile (4 ml), potassium carbonate (0.14 g, 1.1 mmol) and iodoethane (0.48 ml, 0.52 mmol). Yield: 0.09 g (60%). The amine was converted to the hydrochloric acid salt and recrystallized from ethanol/diethyl ether: M.p. 214-216° C. MS m/z (relative intensity, 70 eV) 286 (M+, 59), 272 (14), 271 (87), 201 (11), 57 (bp).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08314126B2
Source datasetuspto-grants-2012_11
ORD IDord-afd1a344073b4239a2a715e98179c4ad
Source noteuspto-grants-2012_11