Acetone → Methyl 4,5-dimethoxy-9,10-dioxo-9,10-dihydroanthracene-2-carboxylate

HRID 374638Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 374638
[OH:1][C:2]1[C:15]2[C:14](=[O:16])C3[C:8](=[CH:9][CH:10]=[CH:11]C=3O)[C:7](=[O:18])[C:6]=2[CH:5]=[C:4]([C:19]([OH:21])=O)[CH:3]=1.S([O:27][CH3:28])(OC)(=O)=O.[C:29](=O)([O-])[O-].[K+].[K+].CC(C)=O.O1[CH2:44][CH2:43][O:42][CH2:41]C1>>[CH3:29][O:1][C:2]1[C:15]2[C:14](=[O:16])[C:44]3[C:8](=[CH:9][CH:10]=[CH:11][C:43]=3[O:42][CH3:41])[C:7](=[O:18])[C:6]=2[CH:5]=[C:4]([C:19]([O:27][CH3:28])=[O:21])[CH:3]=1

Komponenten

6

Edukt 5

HCID 180AcetoneHCID 6497Dimethyl SulfateHCID 10168RheinHCID 11430Potassium CarbonateHCID 312751,4-Dioxane

Produkt 1

HCID 11067354Methyl 4,5-dimethoxy-9,10-dioxo-9,10-dihydroanthracene-2-carboxylate

Versuchsvorschrift

A mixture of 9,10-dihydro-4,5-dihydroxy-9,10-dioxoanthracene-2-carboxylic acid (28.4 g), dimethyl sulphate (59 ml; 79 g) and anhydrous potassium carbonate (207 g) in `Drierire` dried acetone (1350 ml) and dioxan (1200 ml) was heated at reflux for 17 hours, with mechanical stirring. After allowing to cool, the suspension was filtered and the filter contents were washed with hot dioxan (5×50 ml).

Aufarbeitung

  1. temperaturewas heated
  2. temperatureat reflux for 17 hours, with mechanical stirring
  3. temperatureto cool
  4. filtrationthe suspension was filtered
  5. washthe filter contents were washed with hot dioxan (5×50 ml)

Quellen und Nachweise

ORD-Eintrag
ord-d732113203ea46d5ab373a7aa0edeabf
Quelldatensatz
uspto-grants-1996_01
Patentnummer
US05480873

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