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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2114310Generated: November 1, 2026

Pyrazole → 4-Bromo-5-(2-chloro-benzoylamino)-1-methyl-pyrazole-3-carboxylic acid [2-(4-(pyridin-4-yl)-piperazin-1-yl)ethyl]amide

https://huagongshe.com/reaction/2114310

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyrazoleHCID 1048—
Reactant2-Chlorobenzoyl chlorideHCID 69110—
Reactant2-[4-(4-Pyridinyl)piperazino]ethylamineHCID 18440675—
ReactantHCID 178461679HCID 178461679—
Product4-Bromo-5-(2-chloro-benzoylamino)-1-methyl-pyrazole-3-carboxylic acid [2-(4-(pyridin-4-yl)-piperazin-1-yl)ethyl]amideHCID 59773338—

Reaction Steps

The pyrazole acid, prepared by coupling methyl ester 85 (Gen. Proc. 26) with 2-chlorobenzoyl chloride (21) followed by hydrolysis and bromination as shown in Gen. Proc. 8. was coupled to 2-(4-pyridin-4-yl-piperazin-1-yl)ethylamine (CA 985683) using the method of Procedure 10.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07432379B2
Source datasetuspto-grants-2008_10
ORD IDord-ddcc84bfbb784245bf475f8be3e372d8
Source noteuspto-grants-2008_10