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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2165070Generated: November 1, 2026

4,5-Dichlorophthalic anhydride → HCID 53675902, compound

https://huagongshe.com/reaction/2165070

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4,5-Dichlorophthalic anhydrideHCID 70334—
ReactantAcetic acid, 2-(triphenylphosphoranylidene)-, ethyl esterHCID 70670—
SolventChloroformHCID 6212—
ProductHCID 53675902HCID 5367590270.8%

Reaction Steps

A solution of 4,5-dichlorophthalic anhydride (10.0 g) and (carbethoxymethylene)triphenylphosphorane (16.0 g) in chloroform (450 ml) was refluxed for 16 hours. Evaporation of chloroform and chromatography of the residue over silica gel gave the product (9.34 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04939140
Source datasetuspto-grants-1990_07
ORD IDord-73679e24967845a298053b873e2869d6
Source noteuspto-grants-1990_07