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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 414367Generated: October 28, 2026

Dimethylformamide → Benzoyl chloride, 2,3-dichloro-4,5-difluoro-

https://huagongshe.com/reaction/414367

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDimethylformamideHCID 6228—
ReactantThionyl ChlorideHCID 24386—
Reactant2,3-Dichloro-4,5-difluorobenzoic acidHCID 13938036—
ProductBenzoyl chloride, 2,3-dichloro-4,5-difluoro-HCID 10999320—

Reaction Steps

A solution of 2,3-dichloro-4,5-difluorobenzoic acid (9.3 g) and dimethylformamide (0.013 ml) in thionyl chloride (40 ml) was refluxed for 2.5 hours, and then concentrated. The resulting residue was purified by distillation in nitrogen atmosphere to give the title compound (8.7 g) as pale yellow oil, bp 123°-126° C./40 mmHg.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04791225
Source datasetuspto-grants-1988_12
ORD IDord-2cf3c5da3c9a43c6a773405b46f75f3b
Source noteuspto-grants-1988_12