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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 888204Generated: October 31, 2026

Hydrochloric Acid → 1-(5-(2-Thienyl)-1,2,4-oxadiazol-3-yl)piperazine, dihydrochloride

https://huagongshe.com/reaction/888204

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantTert-butyl 4-(5-(2-thienyl)-1,2,4-oxadiazol-3-yl)piperazine-1-carboxylateHCID 58487964—
SolventDiethyl EtherHCID 3283—
Product1-(5-(2-Thienyl)-1,2,4-oxadiazol-3-yl)piperazine, dihydrochlorideHCID 13172912778%

Reaction Steps

A solution of tert-butyl 4-(5-(2-thienyl)-1,2,4-oxadiazol-3-yl)piperazine-1-carboxylate (2.2 g) in 2M HCl in Et2O (50 mL) was stirred at RT for 6 hours. The solvent was removed under vacuum to give 1.6 g (78%) of The title compound as a solid. TLC-CHCl3/MeOH (8/2): Rf=0.2. HPLC purity>98%.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08247437B2
Source datasetuspto-grants-2012_08
ORD IDord-4bb5bf313bd344029e9822786c101895
Source noteuspto-grants-2012_08