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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1415593Generated: October 26, 2026

Ethanol → 3-Methyl-4-(prop-2-en-1-yl)-1-(alpha-methyl-3,4-di-chlorobenzyl)-pyrazol-5-one

https://huagongshe.com/reaction/1415593

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthanolHCID 702—
ReactantEthyl 3-oxo-6-heptenoateHCID 247666—
Reactant(1-(3,4-Dichlorophenyl)ethyl)hydrazineHCID 3016950—
Product3-Methyl-4-(prop-2-en-1-yl)-1-(alpha-methyl-3,4-di-chlorobenzyl)-pyrazol-5-oneHCID 20361941—

Reaction Steps

17 g (0.1 mol) of allylacetoacetic acid ethyl ester were added to a mixture of 20.5 g of α-methyl-3,4-dichlorobenzylhydrazine and 30 ml of absolute ethanol under nitrogen, whereupon the temperature rose to 55° C. The reaction mixture was heated to the reflux temperature for 2 hours. After cooling, the reaction product crystallized out.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04005215
Source datasetuspto-grants-1977_01
ORD IDord-6ee7a292affc42ad96f35175ca3f9164
Source noteuspto-grants-1977_01