Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 3807Generated: October 25, 2026

Dimethyl Sulfoxide → 1-(4-Methylbenzyl)-4-(3-chloropropyl)piperazine dihydrochloride

https://huagongshe.com/reaction/3807

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDimethyl SulfoxideHCID 679—
Reactant1-Bromo-3-chloropropaneHCID 8006—
ReactantPotassium HydroxideHCID 14797—
Reactant1-(4-Methylbenzyl)piperazineHCID 764723—
SolventWaterHCID 962—
Product1-(4-Methylbenzyl)-4-(3-chloropropyl)piperazine dihydrochlorideHCID 20153192274.5%

Reaction Steps

A mixture of 14.0 g of 1-(4-methylbenzyl)piperazine, 8.0 g of potassium hydroxide and 125 ml of dimethyl sulfoxide was stirred for 45 minutes. 11.8 g of 1-bromo-3-chloropropane were then added, and the mixture was stirred for an additional hour. Water was added, and the product was extracted with ether, and the extract was dried (sodium sulfate) and treated with ethereal hydrochloric acid to give 23.3 g (94% of theory) of 1-(4-methylbenzyl)-4-(3-chloropropyl)piperazine dihydrochloride as a white crystalline solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04722926
Source datasetuspto-grants-1988_02
ORD IDord-077a49be5a59401b8abfc287ca092333
Source noteuspto-grants-1988_02