Ethanol → 2,5-nonanedione

HRID 258947Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 258947
[CH3:1][CH2:2][CH2:3][CH2:4][CH:5]=[O:6].[CH:7]([C:9]([CH3:11])=O)=[CH2:8].C(N(CC)CC)C.C([OH:21])C>>[CH3:1][C:2](=[O:21])[CH2:3][CH2:4][C:5](=[O:6])[CH2:8][CH2:7][CH2:9][CH3:11]

Komponenten

5

Edukt 4

HCID 702EthanolHCID 6570Methyl vinyl ketoneHCID 8063PentanalHCID 8471Triethylamine

Produkt 1

HCID 111265032,5-nonanedione

Versuchsvorschrift

Following the procedure described in Example 1, 13.5 g (0.05 mol) of Cat. 1, 43.1 g (0.5 mol) of n-valeraldehyde, 35.1 g (0.5 mol) of methyl vinyl ketone, 500 ml of ethanol and 20.2 g (0.2 mol) of triethylamine are heated for 12 hours under nitrogen at the reflux temperature. For working up, the solvent is distilled, the cooled residue is taken up in chloroform, the chloroform phase is washed with dilute sulphuric acid and subsequently with water, the chloroform is removed and the liquid residue is distilled in a waterpump vacuum. Nonane-2,5-dione is obtained.

Aufarbeitung

  1. distillationthe solvent is distilled
  2. washthe chloroform phase is washed with dilute sulphuric acid and subsequently with water
  3. customthe chloroform is removed
  4. distillationthe liquid residue is distilled in a waterpump vacuum

Quellen und Nachweise

ORD-Eintrag
ord-03063fefccd84353b39346574fd8c449
Quelldatensatz
uspto-grants-1977_07
Patentnummer
US04035395

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