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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1641457Generated: November 3, 2026

Thionyl Chloride → HCID 56949532, compound

https://huagongshe.com/reaction/1641457

Reaction equation

Participants

RoleNameHCIDCharge
ReactantThionyl ChlorideHCID 24386—
Reactant3-Bromo-1-(3-chloropyridin-2-yl)-1H-pyrazole-5-carboxylic acidHCID 11587535—
CatalystDimethylformamideHCID 6228—
SolventTolueneHCID 1140—
ProductHCID 56949532HCID 56949532—

Reaction Steps

3 ml of thionyl chloride and 5 drops of dimethylformamide were added to a mixed solution comprising 3.0 g of 3-bromo-1-(3-chloropyridin-2-yl)-1H-pyrazole-5-carboxylic acid and 30 ml of toluene, followed by reflux with heating for one hour, and thionyl chloride and toluene were distilled off to obtain crude product of 3-bromo-1-(3-chloropyridin-2-yl)-1H-pyrazole-5-carbonyl chloride.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08115006B2
Source datasetuspto-grants-2012_02
ORD IDord-aae7491e6f0e4691a34d0df0da13bb50
Source noteuspto-grants-2012_02