Methanol → HCID 22768536, Verbindung

HRID 1764488Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1764488
[O:1]=[C:2]1[CH:6]([CH3:7])[O:5][CH:4]([CH3:8])[CH:3]1[C:9]([O:11][CH2:12][CH3:13])=[O:10].CO>C(O)C1C=CC=CC=1>[O:1]=[C:2]1[CH:6]([CH3:7])[O:5][CH:4]([CH3:8])[CH:3]1[C:9]([O:11][CH2:12][C:13]1[CH:7]=[CH:6][CH:2]=[CH:3][CH:4]=1)=[O:10]

Komponenten

4

Edukt 2

HCID 887MethanolHCID 22768534Ethyl 2,5-dimethyl-4-oxooxolane-3-carboxylate

Produkt 1

HCID 22768536HCID 22768536, VerbindungAusbeute 168,7 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 244Benzyl AlcoholLösungsmittel

Versuchsvorschrift

40 g of 4-oxo-2,5-dimethyl-3-carboethoxytetrahydrofuran in 200 ml of benzyl alcohol are heated at 180°-200° C. The methanol formed is distilled off. The excess benzyl alcohol is distilled off under reduced pressure and the residue is fractionated. 45 g (corresponding to 78% of theory) of 4-oxo-2,5-dimethyl-3-carbobenzyloxytetrahydrofuran of boiling point 102° C/0.02 mm Hg and refractive index nD25 = 1.5070 are obtained.

Aufarbeitung

  1. distillationis distilled off
  2. distillationThe excess benzyl alcohol is distilled off under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-fcaffd7d8da140538ac716f8d8dcf6fe
Quelldatensatz
uspto-grants-1978_09
Patentnummer
US04116982

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