Benzophenone → 4,4'-Carbonyldiphthalic anhydride

HRID 1788815Notes

Reaction equation

HRID 1788815 reaction equation
[CH:1]1[C:6]([C:7]([C:9]2[CH:14]=[CH:13][C:12]([C:15](O)=[O:16])=[C:11]([C:18]([OH:20])=[O:19])[CH:10]=2)=[O:8])=[CH:5][C:4]([C:21]([OH:23])=[O:22])=[C:3]([C:24]([OH:26])=O)[CH:2]=1.C(C1C=CC=CC=1)(=O)C1C=CC=CC=1>>[CH:1]1[C:6]([C:7]([C:9]2[CH:14]=[CH:13][C:12]3[C:15]([O:20][C:18](=[O:19])[C:11]=3[CH:10]=2)=[O:16])=[O:8])=[CH:5][C:4]2[C:21]([O:22][C:24](=[O:26])[C:3]=2[CH:2]=1)=[O:23]

Participants

3

Reactant 2

HCID 3102BenzophenoneHCID 755921,2-Benzenedicarboxylic acid, 4,4'-carbonylbis-2×

Product 1

HCID 754984,4'-Carbonyldiphthalic anhydride

Procedure

A process for producing benzophenone tetracarboxylic dianhydride, which comprises adding benzophenone tetracarboxylic acid to a solvent comprising, as the main constituent, an organic compound having a boiling point of more than 100° C. and being inert to benzophenone tetracarboxylic acid and benzophenone tetracarboxylic anhydrides, and heating the resulting mixture. This process enables one to produce benzophenone tetracarboxylic dianhydride having a very low moisture absorbency.

Workup

  1. temperatureheating the resulting mixture

Sources & evidence

ORD record
ord-6075e750f58d40a38d75ded2154666e1
Source dataset
uspto-grants-1987_08
Patent number
US04684738

Reaction notes

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