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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 345957Generated: November 1, 2026

1,2,4-Trichlorobenzene → Phthalic Anhydride

https://huagongshe.com/reaction/345957

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1,2,4-TrichlorobenzeneHCID 13—
Reactant4-Chlorophthalic anhydrideHCID 67044—
ReactantHCID 54187688HCID 54187688—
ProductPhthalic AnhydrideHCID 6811—

Reaction Conditions

Temperature190 °C

Reaction Steps

A reaction flask was charged with 1.97 g of 4-chlorotetrahydrophthalic anhydride and 0.98 g of activated carbon (DARCO KB-60). 1,2,4-trichlorobenzene (15 mL) was added and the reaction heated to 190° C. Analysis of the reaction mixture showed the formation of 4-chlorophthalic anhydride, with no phthalic anhydride formed at all.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05059697
Source datasetuspto-grants-1991_10
ORD IDord-2c3f0509b65d445abce945a855df7f02
Source noteuspto-grants-1991_10