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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1868003Generated: October 31, 2026

Hydrochloric Acid → HCID 2421448, compound

https://huagongshe.com/reaction/1868003

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantBenzenesulfonyl chloride, 3,4-dichloro-HCID 7383—
Reactant1-(2-Fluorophenyl)piperazineHCID 70529—
ReactantDiisopropylethylamineHCID 81531—
SolventDichloromethaneHCID 6344—
ProductHCID 2421448HCID 242144885.8%

Reaction Steps

Sulfonylation of 1-(2-fluorophenyl)piperazine.HCl (325 mg, 1.5 mmol) with 3,4-dichlorobenzene-1-sulfonyl chloride (368.3 mg, 1.5 mmol) was carried out according to a similar procedure described for step 1A using anhydrous dichloromethane (3 mL) as solvent and diisopropylethylamine (0.575 mL, 3.3 mmol) as base. 1-[(3,4-dichlorophenyl)sulfonyl]-4-(2-fluorophenyl)piperazine was obtained in 85.8% yield (501 mg) as white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07632838B2
Source datasetuspto-grants-2009_12
ORD IDord-ac2058ff8092406c98fc03e00bbdcb3c
Source noteuspto-grants-2009_12