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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1935560Generated: October 31, 2026

Oxalyl chloride → 5-Nitro-3-chloro-2,4-difluorobenzoyl chloride

https://huagongshe.com/reaction/1935560

Reaction equation

Participants

RoleNameHCIDCharge
ReactantOxalyl chlorideHCID 65578—
Reactant3-Chloro-2,4-difluoro-5-nitrobenzoic acidHCID 15549918—
CatalystDimethylformamideHCID 6228—
SolventDichloromethaneHCID 6344—
Product5-Nitro-3-chloro-2,4-difluorobenzoyl chlorideHCID 15549919—

Reaction Steps

An amount of 3.47 g (0.015 mole) of 5-nitro-3-chloro-2,4-difluorobenzoic acid and 2.03 g (0.016 mole) of oxalyl chloride are dissolved in 15 ml of dichloromethane then two drops of DMF are added. The reaction is stirred for 14 hours then the solvent is evaporated under vacuum to afford the desired product.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06387928B1
Source datasetuspto-grants-2002_05
ORD IDord-2f6a4c1a68bb42ecbc964f07babdeaae
Source noteuspto-grants-2002_05