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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1389508Generated: October 30, 2026

Phthalide → 1(3H)-Isobenzofuranone, 3-bromo-

https://huagongshe.com/reaction/1389508

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhthalideHCID 6885—
ReactantN-bromobutanimideHCID 67184—
SolventCarbon TetrachlorideHCID 5943—
Product1(3H)-Isobenzofuranone, 3-bromo-HCID 96218100.7%

Reaction Steps

A mixture of 1-isobenzofuranone (150 g) and N-bromosuccinimide (199.05 g) in carbon tetrachloride (3000 ml) is irradiated with a 500 W photospot lamp for 3 hr, cooled and filtered. The filtrate is evaporated to give 3-bromo-1-isobenzofuranone (240 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04244966
Source datasetuspto-grants-1981_01
ORD IDord-3e589d6af5b84f94823cb6d22175a448
Source noteuspto-grants-1981_01