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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1636348Generated: October 31, 2026

4-Hydrazinobenzoic acid → 4-(4,5-dihydro-5-oxo-3-propyl-1H-pyrazol-1-yl)-benzoic acid

https://huagongshe.com/reaction/1636348

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-Hydrazinobenzoic acidHCID 12089—
Reactant3-OxooctanoateHCID 17804644—
Product4-(4,5-dihydro-5-oxo-3-propyl-1H-pyrazol-1-yl)-benzoic acidHCID 19351340—

Reaction Steps

From the reaction of 4-hydrazinobenzoic acid and ethylbutyrylacetate, 4-(4,5-dihydro-5-oxo-3-propyl-1H-pyrazol-1-yl)-benzoic acid is obtained. Subsequent reaction with 2-ethylaniline yields 4-(4-(2-ethylanilinomethylene)-4,5-dihydro-5-oxo-3-propyl-1H-pyrazol-1-yl)-benzoic acid, Mp 254.5° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06034099
Source datasetuspto-grants-2000_03
ORD IDord-0ee3033895af4deabd4e712600a337f6
Source noteuspto-grants-2000_03