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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 259096Generated: October 26, 2026

N-bromobutanimide → 3-Bromo-5,6-dimethoxy-phthalide

https://huagongshe.com/reaction/259096

Reaction equation

Participants

RoleNameHCIDCharge
ReactantN-bromobutanimideHCID 67184—
Reactant5,6-Dimethoxy-3H-isobenzofuran-1-oneHCID 230460—
SolventCarbon TetrachlorideHCID 5943—
Product3-Bromo-5,6-dimethoxy-phthalideHCID 11196572—

Reaction Steps

5,6-Dimethoxyphthalide (5.82 g; 0.03 mole.), N-bromosuccinimide (5.34 g; 0.03 mole.) and α-azo-isobutyronitrile (0.1 g.) were gently refluxed in dry carbon tetrachloride (150 ml.) for 2 hours.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04036829
Source datasetuspto-grants-1977_07
ORD IDord-6b41297585f9490692e29fa7da463c83
Source noteuspto-grants-1977_07