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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 22952Generated: October 28, 2026

Hydrochloric Acid → 1-n-Butylpiperazine dihydrochloride

https://huagongshe.com/reaction/22952

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantButyl iodideHCID 10962—
ReactantPotassium CarbonateHCID 11430—
Reactanttert-Butyl piperazine-1-carboxylateHCID 143452—
SolventDimethylformamideHCID 6228—
Product1-n-Butylpiperazine dihydrochlorideHCID 22591405—

Reaction Steps

To a dimethylformamide (7 ml) solution containing N-(tert-butoxycarbonyl)piperazine (1.0 g) were added potassium carbonate (742 mg) and then butyl iodide (1.09 g), and the mixture was stirred at room temperature for 15 hours to undergo reaction, thereby obtaining N-tert-butoxycarbonyl-N-butylpiperazine. This compound was acid-treated with hydrochloric acid to obtain N-butylpiperazine.dihydrochloride.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06849622B2
Source datasetuspto-grants-2005_02
ORD IDord-a101939f33274ce39472dcee1a489da3
Source noteuspto-grants-2005_02