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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2229163Generated: November 2, 2026

Methylhydrazine → HCID 23150870, compound

https://huagongshe.com/reaction/2229163

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethylhydrazineHCID 6061—
ReactantEthyl 3-(4-chlorophenyl)-3-oxopropanoateHCID 101336—
SolventEthanolHCID 702—
ProductHCID 23150870HCID 2315087043.2%

Reaction Steps

To a solution of ethyl 4-chlorobenzoylacetate (500 mg) in 4 ml of ethanol was added 202 mg of methylhydrazine and the resulting mixture was stirred over night at room temperature. The solvent was removed under reduced pressure and to the residue was purified by the use of silica gel column chromatography to give 199 mg of 3-(4-chlorophenyl)-1-methylpyrazoline-5-one.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06420367B1
Source datasetuspto-grants-2002_07
ORD IDord-e0d220a10459485e9aeba943c1c696d7
Source noteuspto-grants-2002_07