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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1959417Generated: November 1, 2026

Hydrochloric Acid → 3-(5-Phenyl-1,2,4-oxadiazol-3-yl)-5-(1,2,3,6-tetrahydropyridin-4-yl)pyrazin-2-amine

https://huagongshe.com/reaction/1959417

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant1,4-DioxaneHCID 31275—
Reactanttert-butyl 4-(5-amino-6-(5-phenyl-1,2,4-oxadiazol-3-yl)pyrazin-2-yl)-5,6-dihydropyridine-1(2H)-carboxylateHCID 66744707—
SolventMethanolHCID 887—
Product3-(5-Phenyl-1,2,4-oxadiazol-3-yl)-5-(1,2,3,6-tetrahydropyridin-4-yl)pyrazin-2-amineHCID 6674444299.6%

Reaction Steps

A solution of HCl in dioxane (505.5 μL of 4 M, 2.022 mmol) was added to a solution of tert-butyl 4-[5-amino-6-(5-phenyl-1,2,4-oxadiazol-3-yl)pyrazin-2-yl]-3,6-dihydro-2H-pyridine-1-carboxylate (170 mg, 0.4043 mmol) in methanol (5 mL) at rt and the reaction mixture stirred at room temperature for 48 h. The reaction mixture was concentrated in vacuo to give the title compound (129 mg, 99% yield); MS (ES+) 321.03

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08410112B2
Source datasetuspto-grants-2013_04
ORD IDord-9051fa0a4f6040c3940a19e1aedc3d14
Source noteuspto-grants-2013_04