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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2374331Generated: October 28, 2026

1,1'-Carbonyldiimidazole → 4-Pentyl-1,4-dihydro-5H-[1,2,4]triazolo[5,1-i]purin-5-one

https://huagongshe.com/reaction/2374331

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1,1'-CarbonyldiimidazoleHCID 68263—
ReactantN-Pentyl-5-(1H-1,2,4-triazol-5-yl)-1H-imidazol-4-amineHCID 135984707—
Solvent1,4-DioxaneHCID 31275—
Product4-Pentyl-1,4-dihydro-5H-[1,2,4]triazolo[5,1-i]purin-5-oneHCID 1359846845.1%

Reaction Conditions

Temperature110 °C

Reaction Steps

A mixture of N-pentyl-5-(1H-1,2,4-triazol-5-yl)-1H-imidazol-4-amine (0.52 g, 2.4 mmol) and N,N-carbonyldiimidazole (0.57 g, 3.5 mmol) in 1,4-dioxane (10 mL) was stirred at 110° C. for 2 hours. The solvent was removed under reduced pressure, and the residue was purified by preparative LCMS to yield the desire product (30 mg, 5% yield). LCMS calculated for C11H15N6O (M+H): 247.1; found: 247.1.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07462624B2
Source datasetuspto-grants-2008_12
ORD IDord-c33e6e209cdb47968b5fc387a513dd28
Source noteuspto-grants-2008_12