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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1080686Generated: October 31, 2026

Thionyl Chloride → 2-Chloropyridine-4-carbonyl chloride

https://huagongshe.com/reaction/1080686

Reaction equation

Participants

RoleNameHCIDCharge
ReactantThionyl ChlorideHCID 24386—
Reactant2-Chloroisonicotinic acidHCID 236985—
Product2-Chloropyridine-4-carbonyl chlorideHCID 2800003—

Reaction Steps

A solution of 2-chloropyridine-4-carboxylic acid (10 g) in thionyl chloride (90 mL) was heated under reflux for 20 hours. The excess thionyl chloride was removed by distillation at atmospheric pressure and the oily residue was distilled to give 9.26 grams of 2-chloropyridine-4-carbonyl chloride having a boiling point of 144°-148° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05583148
Source datasetuspto-grants-1996_12
ORD IDord-0be045e21a9b4efa84f877d272d54d19
Source noteuspto-grants-1996_12