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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 930113Generated: October 29, 2026

Piperazin-2-one → 4-[1-(3-Chlorophenyl)-5-(2-chloro-4-pyridyl)pyrazole-3-carbonyl]piperazin-2-one

https://huagongshe.com/reaction/930113

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperazin-2-oneHCID 231360—
Reactant4-[5-(3-Chloro-5-fluoro-phenyl)-1-(3-pyridyl)pyrazole-3-carbonyl]piperazin-2-oneHCID 71576533—
Reactant1-(3-Chlorophenyl)-5-(2-chloropyridin-4-yl)-1H-pyrazole-3-carboxylic acidHCID 89602442—
Product4-[1-(3-Chlorophenyl)-5-(2-chloro-4-pyridyl)pyrazole-3-carbonyl]piperazin-2-oneHCID 86574384—

Reaction Steps

100 mg (0.30 mmol) of the compound of Example 69A is reacted analogously to the synthesis of the compound of Example 4 with 32 mg (0.32 mmol) of 2-oxopiperazine. 111 mg (890% of theory) of the title compound is obtained.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09296720B2
Source datasetuspto-grants-2016_03
ORD IDord-581b07dd18864d5da8284c0badda4ab1
Source noteuspto-grants-2016_03