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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 930087Generated: October 31, 2026

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

https://huagongshe.com/reaction/930087

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-Fluoro-5-difluoromethoxyphenyl)-1-(2-chloropyridin-4-yl)-1H-pyrazole-3-carboxylic acidHCID 89609957—
Product4-[1-(2-Chloro-4-pyridyl)-5-[3-(difluoromethoxy)-5-fluoro-phenyl]pyrazole-3-carbonyl]piperazin-2-oneHCID 86574263—

Reaction Steps

40 mg (0.10 mmol) of the compound of Example 53A is reacted analogously to the synthesis of the compound of Example 4 with 11 mg (0.11 mmol) of 2-oxopiperazine. 39 mg (80% 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-bea88e0329b14553beb5b1f69399e789
Source noteuspto-grants-2016_03