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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 930056Generated: October 31, 2026

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

https://huagongshe.com/reaction/930056

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—
Reactant5-(3-Chloro-5-fluorophenyl)-1-(2-chloropyridin-4-yl)-1H-pyrazole-3-carboxylic acidHCID 89609958—
Product4-[5-(3-Chloro-5-fluoro-phenyl)-1-(2-chloro-4-pyridyl)pyrazole-3-carbonyl]piperazin-2-oneHCID 71576588—

Reaction Steps

30 mg (0.09 mmol) of the compound of Example 28A is reacted analogously to the synthesis of the compound of Example 4 with 9 mg (0.09 mmol) of 2-oxopiperazine. 32 mg (87% 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-d70cc1ce946f47128d0be33b945a4f22
Source noteuspto-grants-2016_03