Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 478840Generated: October 31, 2026

Ethyl benzoylacetate → 1-(3,4-Dimethylphenyl)-3-phenyl-3-pyrazolin-5-one

https://huagongshe.com/reaction/478840

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl benzoylacetateHCID 7170—
ReactantEthyl AcetoacetateHCID 8868—
Reactant4-BenzyloxyphenylhydrazineHCID 561392—
Product1-(3,4-Dimethylphenyl)-3-phenyl-3-pyrazolin-5-oneHCID 18756421—

Reaction Steps

Following the procedure of Example 3b), except substituting 3,4-dimethylphenylhydrazine for 4-benzyloxyphenylhydrazine and ethyl benzoylacetate for ethyl acetoacetate, the title compound was prepared (16.0 g; 61%). MS(ES) m/z 265 [M+H].

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06642265B1
Source datasetuspto-grants-2003_11
ORD IDord-9ba70887dcb1422896b214fcde8cfb46
Source noteuspto-grants-2003_11