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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1740621Generated: October 29, 2026

1,2-Dichloroethane → HCID 21837259, compound

https://huagongshe.com/reaction/1740621

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1,2-DichloroethaneHCID 11—
Reactant1-HydroxybenzotriazoleHCID 75771—
ReactantHCID 18700172HCID 18700172—
Reactant1-(3-Ethylphenyl)piperazineHCID 19911473—
SolventDimethylformamideHCID 6228—
ProductHCID 21837259HCID 21837259—

Reaction Steps

1-(3-ethylphenyl)piperazine from the previous step was dissolved in 1 mL dry DMF, and to the solution was added 0.03 g (0.128 mmol) 2-(2,2,2-trifluoroethoxy)phenylacetic acid, 0.017 g (0.128 mmol) HOBT, and 0.024 g (0.128 mmol) EDC. The reaction was stirred for 2 days, after which time the solvent was removed in vacuo and the resulting residue partitioned between EtOAc/H2O. The aqueous phase was extracted with EtOAc and the combined organic phases were washed with H2O, brine, dried over Na2SO4 and filtered. Removal of the solvent and subsequent purification via preparative TLC (2:1 Hexane/EtOAc) yielded the title compound as the free base. This was dissolved in 20 mL EtOAc and an excess of ethanolic HCl was added. The solvent was removed to give the Hcl salt of the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05968938
Source datasetuspto-grants-1999_10
ORD IDord-66f289cd132b4e0f96507ae2354e72f1
Source noteuspto-grants-1999_10