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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 930080Generated: October 31, 2026

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

https://huagongshe.com/reaction/930080

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperazin-2-oneHCID 231360—
ReactantHCID 71576484HCID 71576484—
Reactant5-(3-Bromo-5-trifluoromethoxyphenyl)-1-(2-methylpyridin-4-yl)-1H-pyrazole-3-carboxylic acidHCID 89609932—
Product4-[5-[3-Bromo-5-(trifluoromethoxy)phenyl]-1-(2-methyl-4-pyridyl)pyrazole-3-carbonyl]piperazin-2-oneHCID 86574653—

Reaction Steps

50 mg (0.11 mmol) of the compound of Example 48A is reacted analogously to the synthesis of the compound of Example 1 with 12 mg (0.12 mmol) of 2-oxopiperazine. 51 mg (86% 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-b8e0c6445c614a2f86472b9db856de2d
Source noteuspto-grants-2016_03