Pyromellitic Acid → Pyromellitic dianhydride

HRID 1164653

Reaktionsgleichung

Reaktionsgleichung von HRID 1164653
[C:1]([OH:18])(=[O:17])[C:2]1[C:3](=[CH:7][C:8](=[C:12]([CH:16]=1)[C:13]([OH:15])=[O:14])[C:9]([OH:11])=O)[C:4]([OH:6])=O>C1(OC)C=CC=CC=1>[CH:16]1[C:12]2[C:13]([O:14][C:9](=[O:11])[C:8]=2[CH:7]=[C:3]2[C:4]([O:18][C:1](=[O:17])[C:2]=12)=[O:6])=[O:15]

Komponenten

3

Edukt 1

HCID 6961Pyromellitic Acid

Produkt 1

HCID 6966Pyromellitic dianhydride

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 7519AnisoleLösungsmittel

Versuchsvorschrift

50.0 g pyromellitic acid were boiled under reflux with 400 ml anisole and 3.0 g activated carbon, Merck Art. No. 2184, under the same conditions as in example 1 and then processed. 4.3 g (60.6% of the theory) water separated in the course of 2.5 hours. 27.3 g (=64% of the theory) pyromellitic acid anhydride were obtained and the remainder of 18.0 g, (36%) was filtered off as unchanged pyromellitic acid, together with the activated carbon.

Aufarbeitung

  1. custom4.3 g (60.6% of the theory) water separated in the course of 2.5 hours

Quellen und Nachweise

ORD-Eintrag
ord-56da8f3a68484008b231c5bed601bd04
Quelldatensatz
uspto-grants-1983_01
Patentnummer
US04370487

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