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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 930057Generated: November 1, 2026

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

https://huagongshe.com/reaction/930057

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-methylpyridin-4-yl)-1H-pyrazole-3-carboxylic acidHCID 89602617—
Product4-[5-(3-Chloro-5-fluoro-phenyl)-1-(2-methyl-4-pyridyl)pyrazole-3-carbonyl]piperazin-2-oneHCID 86574283—

Reaction Steps

75 mg (0.23 mmol) of the compound of Example 30A is reacted analogously to the synthesis of the compound of Example 4 with 24 mg (0.24 mmol) of 2-oxopiperazine. 77 mg (82% 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-f179fd85fb5141bb87dcc90bb4eb15c6
Source noteuspto-grants-2016_03