Tetrahydrofuran-2,3,4,5-tetracarboxylic acid, mixed isomers → Pyromellitic dianhydride

Reaction equation

O1C(C(O)=O)C(C(O)=O)C(C(O)=O)C1C(O)=O.[CH:18]1([C:33]([OH:35])=[O:34])[CH2:23][CH:22]([C:24]([OH:26])=O)[CH:21]([C:27]([OH:29])=[O:28])[CH2:20][CH:19]1[C:30]([OH:32])=O>>[CH:23]1[C:18]2[C:33]([O:35][C:30](=[O:32])[C:19]=2[CH:20]=[C:21]2[C:27]([O:28][C:24](=[O:26])[C:22]=12)=[O:29])=[O:34]

Participants

Reactant 2

HCID 97421Tetrahydrofuran-2,3,4,5-tetracarboxylic acid, mixed isomers

HCID 28349461,2,4,5-Cyclohexanetetracarboxylic Acid

Product 1

HCID 6966Pyromellitic dianhydride

Procedure

tetrahydrofuran-2,3,4,5-tetracarboxylic acid and 1,2,4,5-cyclohexanetetracarboxylic acid .

Sources & evidence

ORD record: ord-97747416bf08458fa43b4b3fa51baccb
Source dataset: uspto-grants-1991_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04999417

Reaction notes

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