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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1097666Generated: October 30, 2026

Sodium ethoxide → 8-Chloro-1-(3-{3-[(3,4-dichlorophenyl)methyl]-1,2,4-oxadiazol-5-yl}propyl)-3-pentyl-3,7-dihydro-1H-purine-2,6-dione

https://huagongshe.com/reaction/1097666

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium ethoxideHCID 2723922—
ReactantEthyl 5-(8-chloro-2,6-dioxo-3-pentyl-2,3,6,7-tetrahydro-1H-purin-1-yl)pentanoateHCID 66812467—
ReactantHCID 178506462HCID 178506462—
SolventEthanolHCID 702—
Product8-Chloro-1-(3-{3-[(3,4-dichlorophenyl)methyl]-1,2,4-oxadiazol-5-yl}propyl)-3-pentyl-3,7-dihydro-1H-purine-2,6-dioneHCID 5939549466.1%

Reaction Conditions

Temperature140 °C

Reaction Steps

Ethyl 5-(8-chloro-2,6-dioxo-3-pentyl-2,3,6,7-tetrahydro-1H-purin-1-yl)pentanoate (70 mg, 0.19 mmol) was dissolved in EtOH. The solution was treated with a 21% solution of NaOEt in EtOH (78 μl, 0.21 mmol) and (1Z)-2-(3,4-dichlorophenyl)-N-hydroxyethanimidamide (46 mg, 0.21 mmol). The reaction was heated in the microwave at 140° C. for 10 min. The mixture was partitioned between EtOH and 2M HCl (aq). The organic layer was decanted off and concentrated. The crude product was purified on the MDAP. The product fractions were combined and concentrated to give the title compound as a white solid (66 mg, 66%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08143264B2
Source datasetuspto-grants-2012_03
ORD IDord-d8934327add64df8bfd29a1260be1404
Source noteuspto-grants-2012_03