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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1387307Generated: October 30, 2026

Oxalyl chloride → 4-Bromo-2-methylbenzoyl chloride

https://huagongshe.com/reaction/1387307

Reaction equation

Participants

RoleNameHCIDCharge
ReactantOxalyl chlorideHCID 65578—
Reactant4-Bromo-2-methylbenzoic acidHCID 99570—
CatalystDichloromethaneHCID 6344—
SolventDimethylformamideHCID 6228—
Product4-Bromo-2-methylbenzoyl chlorideHCID 12846483—

Reaction Steps

A suspension of 4-bromo-2-methylbenzoic acid (4.9 g, 22.8 mmol) in dichloromethane containing a few drops of N,N-dimethylformamide was treated dropwise under nitrogen with oxalyl chloride (2.4 mL, 27.5 mol). After gas evolution subsided, the reaction mixture was refluxed for an additional 15 minutes and then evaporated to dryness in vacuo to provide the crude 4-bromo-2-methylbenzoyl chloride.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06268360B1
Source datasetuspto-grants-2001_07
ORD IDord-5dccd09901b84d3eb34b96fc57827b34
Source noteuspto-grants-2001_07