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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1636343Generated: November 1, 2026

(4-Nitrophenyl)hydrazine → 2,4-dihydro-2-(4-nitrophenyl)-5-propyl-3H-Pyrazol-3-one

https://huagongshe.com/reaction/1636343

Reaction equation

Participants

RoleNameHCIDCharge
Reactant(4-Nitrophenyl)hydrazineHCID 3310889—
Reactant3-OxooctanoateHCID 17804644—
Product2,4-dihydro-2-(4-nitrophenyl)-5-propyl-3H-Pyrazol-3-oneHCID 8080874—

Reaction Steps

From the reaction of 4-nitrophenylhydrazine and ethylbutyrylacetate, 2,4-dihydro-2-(4-nitrophenyl)-5-propyl-3H-pyrazol-3-one is obtained. Subsequent reaction with 2-ethylaniline yields 4-(2-ethylanilinomethylene)-2,4-dihydro-2-(4-nitrophenyl)-5-propyl-3H-pyrazol-3-one, Mp 211° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06034099
Source datasetuspto-grants-2000_03
ORD IDord-3871eb20eb7f4fcfb0ff937c123d9ede
Source noteuspto-grants-2000_03