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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 657691Generated: October 29, 2026

3-oxopentanenitrile → 5-Ethyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-amine

https://huagongshe.com/reaction/657691

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3-oxopentanenitrileHCID 9920369—
ReactantHCID 178418311HCID 178418311—
SolventAcetic AcidHCID 176—
Product5-Ethyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-amineHCID 6674253512%

Reaction Conditions

Temperature150 °C

Reaction Steps

A mixture of 3-oxopentanenitrile (1.0 g, 103 mmol) and 3-amino-1,2,4-triazole (0.91 g, 10.8 mmol) in 10 mL of acetic acid was heated in a pressure tube at 150° C. for 24 h. The reaction mixture was allowed to cool to room temperature, and solvent was removed in vacuo. The solid was removed via filtration. The filtrate partially solidified upon standing at room temperature, and the solid was collected via filtration to give the title compound (200 mg, 12% yield).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08076344B2
Source datasetuspto-grants-2011_12
ORD IDord-9a9b70386ce54331af3895e68c5efa7b
Source noteuspto-grants-2011_12