Phthalic Anhydride → Naphthalene

HRID 1589102Notes

Reaction equation

HRID 1589102 reaction equation
[C:1]1(=O)O[C:4](=O)[C:3]2=[CH:7][CH:8]=[CH:9][CH:10]=[C:2]12.[C:12]1(=O)OC(=O)C=[CH:13]1>CC1C=CC=CC=1C>[CH:4]1[C:3]2[C:2](=[CH:10][CH:9]=[CH:8][CH:7]=2)[CH:1]=[CH:13][CH:12]=1

Participants

4

Reactant 2

HCID 6811Phthalic AnhydrideHCID 7923Maleic Anhydride

Product 1

HCID 931Naphthalene

Reagents, catalysts & solvents 1

HCID 7237O-XyleneSolvent

Procedure

A process for the continuous isolation of phthalic anhydride and maleic anhydride from the reaction gases obtained by catalytic oxidation of o-xylene or naphthalene with air, wherein the reaction gases are treated with a hydrocarbon of boiling range from 115° to 175° C. as the solvent in a column, and are then treated with an organic solvent of boiling range from 180° to 290° C. in a second column, the phthalic anhydride and maleic anhydride being isolated from the liquid bottom product of the first column.

Sources & evidence

ORD record
ord-3e9aaea649944b0ab9d5faa200c06d9f
Source dataset
uspto-grants-1986_02
Patent number
US04568427

Reaction notes

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