Methanol → Methyl 7-methyl-9H-xanthene-2-carboxylate

HRID 1288489Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1288489
[CH3:1][C:2]1[CH:15]=[C:14]2[C:5]([O:6][C:7]3[CH:8]=[CH:9][C:10]([C:16]([OH:18])=[O:17])=[CH:11][C:12]=3[CH2:13]2)=[CH:4][CH:3]=1.[CH3:19]O.S(=O)(=O)(O)O>O>[CH3:1][C:2]1[CH:15]=[C:14]2[C:5]([O:6][C:7]3[CH:8]=[CH:9][C:10]([C:16]([O:18][CH3:19])=[O:17])=[CH:11][C:12]=3[CH2:13]2)=[CH:4][CH:3]=1

Komponenten

5

Edukt 3

HCID 887MethanolHCID 1118Sulfuric AcidHCID 215006717-Methyl-9H-xanthene-2-carboxylic acid

Produkt 1

HCID 21500836Methyl 7-methyl-9H-xanthene-2-carboxylate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Reaktionsbedingungen

Temperatur
40 °C

Versuchsvorschrift

Twenty-six grams of 7-methylxanthene-2-carboxylic acid is added to 400 ml. of absolute methanol. To the resultant solution are added 18 ml. of concentrated sulfuric acid and the mixture is then heated at reflux for about 2 hours. The mixture is then cooled to 40° C and sufficient water is added to bring the total volume to 1400 ml. The resultant mixture is then filtered to give methyl 7-methylxanthene-2-carboxylate.

Aufarbeitung

  1. temperatureat reflux for about 2 hours
  2. filtrationThe resultant mixture is then filtered

Quellen und Nachweise

ORD-Eintrag
ord-4378796638724d629b1a8b1e88bb763a
Quelldatensatz
uspto-grants-1976_10
Patentnummer
US03988352

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