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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 930077Generated: October 31, 2026

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

https://huagongshe.com/reaction/930077

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-trifluoromethoxyphenyl)-1-(2-chloropyridin-4-yl)-1H-pyrazole-3-carboxylic acidHCID 89610058—
Product4-[5-[3-Bromo-5-(trifluoromethoxy)phenyl]-1-(2-chloro-4-pyridyl)pyrazole-3-carbonyl]piperazin-2-oneHCID 86574639—

Reaction Steps

30 mg (0.09 mmol) of the compound of Example 46A is reacted analogously to the synthesis of the compound of Example 4 with 9 mg (0.09 mmol) of 2-oxopiperazine. 42 mg (89% 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-8316e596c33240f38456d7072cfa950b
Source noteuspto-grants-2016_03