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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1011944Generated: October 26, 2026

Ethyl 2-acetylacetoacetate → ethyl 1-(3,4-dichlorophenyl)-3,5-dimethyl-1H-pyrazole-4-carboxylate

https://huagongshe.com/reaction/1011944

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl 2-acetylacetoacetateHCID 79063—
Reactant(3,4-Dichlorophenyl)hydrazine monohydrochlorideHCID 3084323—
Productethyl 1-(3,4-dichlorophenyl)-3,5-dimethyl-1H-pyrazole-4-carboxylateHCID 149135632%

Reaction Steps

In analogy to the procedure described in Example 38A], 3,4-dichlorophenylhydrazine hydrochloride and ethyl diacetoacetate gave the title compound in 32% yield as yellow solid. MS: 313.0 (MH+, 2 Cl).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07977358B2
Source datasetuspto-grants-2011_07
ORD IDord-bcce143b3a964ad4810b96635a7bb0c1
Source noteuspto-grants-2011_07