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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 930101Generated: October 30, 2026

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

https://huagongshe.com/reaction/930101

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperazin-2-oneHCID 231360—
ReactantHCID 71576484HCID 71576484—
Reactant5-(3-Bromo-5-methoxyphenyl)-1-(2-chloropyridin-4-yl)-1H-pyrazole-3-carboxylic acidHCID 89602472—
Product4-[5-(3-Bromo-5-methoxy-phenyl)-1-(2-chloro-4-pyridyl)pyrazole-3-carbonyl]piperazin-2-oneHCID 86574290—

Reaction Steps

50 mg (0.12 mmol) of the compound of Example 51A is reacted analogously to the synthesis of the compound of Example 1 with 13 mg (0.14 mmol) of 2-oxopiperazine. 50 mg (84% 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-40d1de9a174040fb97c60cdb6717ba01
Source noteuspto-grants-2016_03