Chromic Acid → 6,7-Diacetoxychromone-3-carboxylic acid

HRID 67090

Reaktionsgleichung

Reaktionsgleichung von HRID 67090
[C:1]([O:4][C:5]1[CH:6]=[C:7]2[C:12](=[CH:13][C:14]=1[O:15][C:16](=[O:18])[CH3:17])[O:11][CH:10]=[C:9]([CH:19]=[O:20])[C:8]2=[O:21])(=[O:3])[CH3:2].CC(C)=[O:24].OS(O)(=O)=O.O=[Cr](=O)=O.[Cr](O)(O)(=O)=O>CC(C)=O.S(=O)(=O)(O)O.O>[C:1]([O:4][C:5]1[CH:6]=[C:7]2[C:12](=[CH:13][C:14]=1[O:15][C:16](=[O:18])[CH3:17])[O:11][CH:10]=[C:9]([C:19]([OH:24])=[O:20])[C:8]2=[O:21])(=[O:3])[CH3:2]

Komponenten

7

Edukt 3

HCID 24425Chromic AcidHCID 122007726,7-Bis-(acetyloxy)-4-oxo-4H-1-benzopyran-3-carboxaldehydeHCID 131709961Jones' reagent

Produkt 1

HCID 122007746,7-Diacetoxychromone-3-carboxylic acid

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 180AcetoneLösungsmittelHCID 962WaterLösungsmittelHCID 1118Sulfuric AcidLösungsmittel

Versuchsvorschrift

6,7-Diacetoxychromone-3-carboxaldehyde (17.8 g) was dissolved in acetone (1 liter). To this solution was added dropwise with stirring Jones reagent (32.8 ml) which had been previously prepared by dissolving chromic acid (133.6 g) in concentrated sulfuric acid (115 ml) diluted with water to a volume of 500 ml.

Aufarbeitung

  1. customhad been previously prepared

Quellen und Nachweise

ORD-Eintrag
ord-1797cad0a35a4ba999469932486ad23a
Quelldatensatz
uspto-grants-1982_08
Patentnummer
US04344944

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