Sodium Sulfate → 2,5-Dimethoxy benzoquinone diimine

HRID 1389734

Reaktionsgleichung

Reaktionsgleichung von HRID 1389734
[CH3:1][O:2][C:3]1[CH:8]=[C:7]([NH2:9])[C:6]([O:10][CH3:11])=[CH:5][C:4]=1[NH2:12].S([O-])([O-])(=O)=O.[Na+].[Na+]>[Ag]=O.C(OC(C)C)(C)C>[CH3:11][O:10][C:6]1[C:7](=[NH:9])[CH:8]=[C:3]([O:2][CH3:1])[C:4](=[NH:12])[CH:5]=1

Komponenten

5

Edukt 2

HCID 24436Sodium Sulfate2×HCID 1555944-Amino-2,5-dimethoxyaniline

Produkt 1

HCID 539632862,5-Dimethoxy benzoquinone diimine

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 92152Silver(II) oxideKatalysatorHCID 7914Diisopropyl EtherLösungsmittel

Versuchsvorschrift

0.06 mole (10 g) 2,5-dimethoxy paraphenylene diamine is introduced into a liter of anhydrous isopropyl ether. 21 g silver oxide and 48 g anhydrous sodium sulfate are then added to the same. The resulting mixture is heated at reflux for 6 hours, while maintaining good agitation. After cooling the reaction mixture the sodium sulfate and the silver are filtered out and the filtrate is evaporated to dryness under vacuum. The dry residue which is the above diimine, after recrystallization from a benzene-petroleum ether mixture, yields pure 2,5-dimethoxy benzoquinone diimine having a melting point of 184°.

Aufarbeitung

  1. temperatureThe resulting mixture is heated
  2. temperatureat reflux for 6 hours
  3. temperaturewhile maintaining good agitation
  4. filtrationthe silver are filtered out
  5. customthe filtrate is evaporated to dryness under vacuum
  6. customafter recrystallization from a benzene-petroleum ether mixture

Quellen und Nachweise

ORD-Eintrag
ord-4bcf27dc48a542f8911097c5592ce5f7
Quelldatensatz
uspto-grants-1981_01
Patentnummer
US04246181

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