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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1005746Generated: October 31, 2026

Ethanol → HCID 178470256, compound

https://huagongshe.com/reaction/1005746

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthanolHCID 702—
ReactantSodium HydroxideHCID 14798—
Reactant1,3-Diethyl 2-oxopropanedioateHCID 69105—
Reactant2-AminopropanediamideHCID 96457—
SolventWaterHCID 962—
ProductHCID 178470256HCID 178470256—

Reaction Steps

In 2.0 mL of water are suspended 0.65 mL of diethyl-2-oxomalonate and 0.5 g of 2-aminomalonamide. Under ice-cooling, 0.85 mL of 5 mol/mL sodium hydroxide is added thereto. The resulting solution is stirred for 40 minutes. Then, at ambient temperature, 2.55 mL of 5 mol/mL sodium hydroxide is added to the solution, which is then stirred for an additional 30 minutes. Ethanol is added to the reaction mixture and the precipitate is collected by filtration to obtain 0.24 g of 3,5-dihydroxy-6-ethoxycarbonyl-2-pyrazinecarboxamide.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06787544B2
Source datasetuspto-grants-2004_09
ORD IDord-5d859514d494455bb8db1374f1e8ebcb
Source noteuspto-grants-2004_09