1,2,4-Trichlorobenzene → Phthalic Anhydride

HRID 345957Notes

Reaction equation

HRID 345957 reaction equation
Cl[CH:2]1[CH:12]=[CH:11][CH:5]2[C:6]([O:8][C:9](=[O:10])[CH:4]2[CH2:3]1)=[O:7].ClC1C=CC(Cl)=CC=1Cl.ClC1C=C2C(=O)OC(=O)C2=CC=1>>[C:9]1(=[O:10])[O:8][C:6](=[O:7])[C:5]2=[CH:11][CH:12]=[CH:2][CH:3]=[C:4]12

Participants

4

Reactant 3

HCID 131,2,4-TrichlorobenzeneHCID 670444-Chlorophthalic anhydrideHCID 54187688HCID 54187688, compound

Product 1

HCID 6811Phthalic Anhydride

Conditions

Temperature
190 °C

Procedure

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.

Sources & evidence

ORD record
ord-2c3f0509b65d445abce945a855df7f02
Source dataset
uspto-grants-1991_10
Patent number
US05059697

Reaction notes

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