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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1817872Generated: October 30, 2026

Thionyl Chloride → 2-Chloro-5-(ethylsulfonyl)-3-nitropyridine

https://huagongshe.com/reaction/1817872

Reaction equation

Participants

RoleNameHCIDCharge
ReactantThionyl ChlorideHCID 24386—
ReactantHCID 178477663HCID 178477663—
CatalystDimethylformamideHCID 6228—
Product2-Chloro-5-(ethylsulfonyl)-3-nitropyridineHCID 86241971—

Reaction Steps

To a solution of 5-(ethylsulfonyl)-3-nitropyridin-2-ol (Step C, 575 mg, 2.5 mmol) in thionyl chloride (7 mL) was added N,N-dimethylformamide (one drop). The mixture was stirred under reflux for 2 h and concentrated to afford the crude title compound as a white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07598393B2
Source datasetuspto-grants-2009_10
ORD IDord-1b091802f7314d1888aa95f9e03bdc57
Source noteuspto-grants-2009_10