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

HRID 1619286

Reaktionsgleichung

Reaktionsgleichung von HRID 1619286
[Br:1][C:2]1[CH:3]=[C:4]([C:11]([OH:13])=[O:12])[C:5]([C:8]([OH:10])=O)=[N:6][CH:7]=1.C(OC(=O)C)(=O)C>>[Br:1][C:2]1[CH:3]=[C:4]2[C:11](=[O:12])[O:13][C:8](=[O:10])[C:5]2=[N:6][CH:7]=1

Komponenten

3

Edukt 2

HCID 7918Acetic AnhydrideHCID 154810665-Bromopyridine-2,3-dicarboxylic acid

Produkt 1

HCID 15481067Furo[3,4-b]pyridine-5,7-dione, 3-bromo-Ausbeute 79 %

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

A suspension of 5-bromo-pyridine-2,3-dicarboxylic acid (700 mg, 2.85 mmol) in acetic anhydride (0.88 ml, 9.39 mmol, 3.3 equiv.) was heated at 80° C. for 10 min and then refluxed for 1 h. Acetic anhydride was evaporated off in vacuo. The resulting solid was triturated with hexane to afford 3-bromo-furo[3,4-b]pyridine-5,7-dione (510 mg, 79%) as off white solid.

Aufarbeitung

  1. temperaturerefluxed for 1 h
  2. customAcetic anhydride was evaporated off in vacuo
  3. customThe resulting solid was triturated with hexane

Quellen und Nachweise

ORD-Eintrag
ord-5620514277ac489886440e82e1ca835e
Quelldatensatz
uspto-grants-2014_07
Patentnummer
US08772300B2

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