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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 600585Generated: October 27, 2026

1,1'-Carbonyldiimidazole → 4-pentyl-8-phenyl-1,4-dihydro-5H-[1,2,4]triazolo[5,1-i]purin-5-one

https://huagongshe.com/reaction/600585

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1,1'-CarbonyldiimidazoleHCID 68263—
ReactantN-pentyl-5-(3-phenyl-1H-1,2,4-triazol-5-yl)-1H-imidazol-4-amineHCID 135984693—
SolventTetrahydrofuranHCID 8028—
Product4-pentyl-8-phenyl-1,4-dihydro-5H-[1,2,4]triazolo[5,1-i]purin-5-oneHCID 13598470845.6%

Reaction Conditions

Temperature70 °C

Reaction Steps

N-pentyl-5-(3-phenyl-1H-1,2,4-triazol-5-yl)-1H-imidazol-4-amine (50 mg, 0.17 mmol) and N,N-carbonyldiimidazole (50 mg, 0.3 mmol) were dissolved in THF (10 mL) and stirred at 70° C. for 2 hours. The reaction mixture was concentrated under reduced pressure, and the residue was purified by preparative LCMS (method B) to yield the desired product (25 mg, 45% yield). LCMS calculated for C17H19N6O(M+H): 323.2. found 323.1.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07902205B2
Source datasetuspto-grants-2011_03
ORD IDord-052bcc1b425b43938c51d265730a63df
Source noteuspto-grants-2011_03