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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1350751Generated: October 29, 2026

Phenylhydrazine → 5-Ethyl-1-phenyl-1H-pyrazole-4-carboxaldehyde

https://huagongshe.com/reaction/1350751

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhenylhydrazineHCID 7516—
ReactantEthyl 3-oxovalerateHCID 78656—
Reactant5-cyclopropyl-1-(propan-2-yl)-1H-pyrazole-4-carbaldehydeHCID 19620135—
Product5-Ethyl-1-phenyl-1H-pyrazole-4-carboxaldehydeHCID 10536027—

Reaction Steps

5-Ethyl-1-phenyl-1H-pyrazole-4-carbaldehyde was prepared from ethyl 3-oxo-pentanoate and phenyl hydrazine in the same manner as 5-cyclopropyl-1-isopropyl-1H-pyrazole-4-carbaldehyde (Example 49).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07214802B2
Source datasetuspto-grants-2007_05
ORD IDord-cdde238f7adb468cb85a2ce133302661
Source noteuspto-grants-2007_05