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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2119944Generated: October 30, 2026

Ethyl 2,4-dioxovalerate → Ethyl 5-methylisoxazole-3-carboxylate

https://huagongshe.com/reaction/2119944

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl 2,4-dioxovalerateHCID 69208—
ReactantHydroxyamine hydrochlorideHCID 443297—
ReactantSodium BicarbonateHCID 516892—
SolventEthanolHCID 702—
ProductEthyl 5-methylisoxazole-3-carboxylateHCID 76677—

Reaction Steps

To a solution of ethyl-2,4-dioxovalerate in ethanol is added hydroxylamine hydrochloride and sodium hydrogen carbonate. The reaction mixture is then heated under reflux for 1 hour. After cooling, the mixture is evaporated to leave a clear liquid that was distilled to leave the title compound.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06686352B2
Source datasetuspto-grants-2004_02
ORD IDord-b38f7e11630e4136bdbf3c57897e38a1
Source noteuspto-grants-2004_02