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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 930096Generated: October 31, 2026

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

https://huagongshe.com/reaction/930096

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-Bromo-5-fluorophenyl)-1-(pyridin-3-yl)-1H-pyrazole-3-carboxylic acidHCID 89602590—
Product4-[5-(3-Bromo-5-fluoro-phenyl)-1-(3-pyridyl)pyrazole-3-carbonyl]piperazin-2-oneHCID 86574265—

Reaction Steps

50 mg (0.14 mmol) of the compound of Example 32A is reacted analogously to the synthesis of the compound of Example 4 with 15 mg (0.15 mmol) of 2-oxopiperazine. 59 mg (96% 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-038e6d24dba64c688fb425945f0935c4
Source noteuspto-grants-2016_03