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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 930105Generated: October 30, 2026

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

https://huagongshe.com/reaction/930105

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperazin-2-oneHCID 231360—
Reactant1-[1-(3-Chloro-4-fluoro-phenyl)-5-(5-fluoro-3-pyridyl)pyrazole-3-carbonyl]imidazolidin-4-oneHCID 86574291—
Reactant1-(3-Chloro-4-fluorophenyl)-5-(5-chloropyridin-3-yl)-1H-pyrazole-3-carboxylic acidHCID 89609974—
Product4-[1-(3-Chloro-4-fluoro-phenyl)-5-(5-chloro-3-pyridyl)pyrazole-3-carbonyl]piperazin-2-oneHCID 86574306—

Reaction Steps

100 mg (0.28 mmol) of the compound of Example 61A is reacted analogously to the synthesis of the compound of Example 98 with 31 mg (0.31 mmol) of 2-oxopiperazine. 71 mg (58% 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-3a60980e857a49998f2f6857fb1cbc40
Source noteuspto-grants-2016_03