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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 259097Generated: October 25, 2026

N-bromobutanimide → Bromo-6-Chloro-Phthalide

https://huagongshe.com/reaction/259097

Reaction equation

Participants

RoleNameHCIDCharge
ReactantN-bromobutanimideHCID 67184—
Reactant6-Chloro-3H-isobenzofuran-1-oneHCID 7174165—
ReactantAzobisbutyronitrileHCID 14151322—
SolventCarbon TetrachlorideHCID 5943—
ProductBromo-6-Chloro-PhthalideHCID 12298538—

Reaction Steps

6-Chlorophthalide (7.66 gms; 0.0452 mole), N-bromosuccinimide (8.1 gms; 0.0452 mole) and azobisbutyronitrile (0.1 gm) were gently refluxed in dry carbon tetrachloride (150 ml.) for 11/2 hours. On cooling, the succinimide was filtered off and the solvent removed in vacuo to leave a yellow solid, which was used immediately. Yield 9.57 gms. 86.2%

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04036829
Source datasetuspto-grants-1977_07
ORD IDord-f756589f3d0541b297d5073c29ad0be3
Source noteuspto-grants-1977_07