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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2182162Generated: October 30, 2026

Piperazine → HCID 69732319, compound

https://huagongshe.com/reaction/2182162

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperazineHCID 4837—
ReactantSodium HydroxideHCID 14798—
ReactantHCID 86588637HCID 86588637—
SolventEthanolHCID 702—
ProductHCID 69732319HCID 69732319—

Reaction Steps

A solution of (3-Chloro-benzyl)-(6-chloro-pyrazin-2-yl)-carbamic acid tert-butyl ester I-4e (68 mg, 0.19 mmol) and piperazine (99 mg, 1.15 mmol) in Ethanol (2 mL) were refluxed overnight. The reaction mixture was cooled and poured into 0.1M NaOH and extracted into ethyl acetate. The organic layer was washed with H2O, brine, dried (Na2SO4), and concentrated to give the title compound I-4f (38 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06894050B2
Source datasetuspto-grants-2005_05
ORD IDord-6133cc0d02cf4d30a3286e052c5ea1d9
Source noteuspto-grants-2005_05