Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1820814Generated: October 26, 2026

Hydrochloric Acid → Rac-2-methyl-1-(4-trifluoromethyl-phenyl)-piperazine hydrochloride

https://huagongshe.com/reaction/1820814

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantRac-3-methyl-4-(4-trifluoromethyl-phenyl)-piperazine-1-carboxylic acid tert-butyl esterHCID 59793643—
SolventDiethyl EtherHCID 3283—
Solvent1,4-DioxaneHCID 31275—
ProductRac-2-methyl-1-(4-trifluoromethyl-phenyl)-piperazine hydrochlorideHCID 69041767—

Reaction Conditions

Temperature90 °C

Reaction Steps

To 0.58 mmol rac-3-methyl-4-(4-trifluoromethyl-phenyl)-piperazine-1-carboxylic acid tert-butyl ester in 3 ml dioxane was added 8.7 mmol HCl (as a 4 M solution in dioxane), and the mixture was heated at 90° C. for 3 h. The mixture was then cooled 0° C. and diluted with 10 ml ether. The ensuing white crystals were collected by filtration, washing with ether, and dried in vacuo to afford the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07605163B2
Source datasetuspto-grants-2009_10
ORD IDord-a8adcd6144fc4095bf1cfebd24c187c4
Source noteuspto-grants-2009_10