Acetic Anhydride → Furo[3,4-b]pyridine-5,7-dione, 3-ethyl-

HRID 2372220Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2372220
[CH2:1]([C:3]1[CH:4]=[C:5]([C:12]([OH:14])=[O:13])[C:6]([C:9]([OH:11])=O)=[N:7][CH:8]=1)[CH3:2].C(OC(=O)C)(=O)C>>[CH2:1]([C:3]1[CH:4]=[C:5]2[C:12](=[O:13])[O:14][C:9](=[O:11])[C:6]2=[N:7][CH:8]=1)[CH3:2]

Komponenten

3

Edukt 2

HCID 7918Acetic AnhydrideHCID 1136065-Ethylquinolinic acid

Produkt 1

HCID 10921053Furo[3,4-b]pyridine-5,7-dione, 3-ethyl-

Versuchsvorschrift

A mixture of the above carboxylic acid (3.0 g, 15.37 mmol) and acetic anhydride (15 ml) is heated until the acid is dissolved. The mixture is then concentrated under vacuum, and the residue is dissolved in ether, stirred, filtered, concentrated and dried to give 5-ethyl-2,3-pyridinedicarboxylic anhydride.

Aufarbeitung

  1. temperatureis heated until the acid
  2. dissolutionis dissolved
  3. concentrationThe mixture is then concentrated under vacuum
  4. dissolutionthe residue is dissolved in ether
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customdried

Quellen und Nachweise

ORD-Eintrag
ord-05a87fea89d04b14afe58b3de8644bda
Quelldatensatz
uspto-grants-1992_03
Patentnummer
US05098466

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