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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 38671Generated: October 27, 2026

Thionyl Chloride → 7-Methoxy-2H-1,3-benzodioxole-5-carbonyl chloride

https://huagongshe.com/reaction/38671

Reaction equation

Participants

RoleNameHCIDCharge
ReactantThionyl ChlorideHCID 24386—
Reactant7-Methoxy-2H-1,3-benzodioxole-5-carboxylic acidHCID 607309—
SolventBenzeneHCID 241—
Product7-Methoxy-2H-1,3-benzodioxole-5-carbonyl chlorideHCID 45081255—

Reaction Steps

3,4-Methylenedioxy-5-methoxybenzoic acid (39.23 g, 0.2 mol) was dissolved in dry benzene, thionyl chloride 47.6 g (28.8 ml, 0.4 mol) was added under stirring, the resulting solution was refluxed for 15 hr, then the solvent and excessive thionyl chloride were removed by distillation under reduced pressure to give pure 3,4-methylenedioxy-5-methoxy-benzoyl chloride.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08524744B2
Source datasetuspto-grants-2013_09
ORD IDord-0d74cf3a0a884f289676c7264a4288e5
Source noteuspto-grants-2013_09