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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 330328Generated: October 30, 2026

Oxalyl chloride → HCID 19869782, compound

https://huagongshe.com/reaction/330328

Reaction equation

Participants

RoleNameHCIDCharge
ReactantOxalyl chlorideHCID 65578—
ReactantHCID 19754838HCID 19754838—
CatalystDimethylformamideHCID 6228—
SolventDiethyl EtherHCID 3283—
ProductHCID 19869782HCID 19869782101.4%

Reaction Conditions

Temperature0 °C

Reaction Steps

A solution of 15.0 grams (0.0742 mole) of 3,4-difluoromethylenedioxybenzoic acid in 200 mL of diethyl ether was stirred and cooled to 0° C. To this was added one drop of dimethylformamide followed by the dropwise addition of 11.3 grams (0.0890 mole) of oxalyl chloride. Upon completion of addition the reaction mixture was allowed to warm to ambient temperature where it stirred for 60 hours. After this time the reaction mixture was concentrated under reduced pressure to yield 16.6 grams of 3,4-difluoromethylenedioxybenzoyl chloride.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04895871
Source datasetuspto-grants-1990_01
ORD IDord-1abe99ae0a5441c9be0e40b366f274ac
Source noteuspto-grants-1990_01