Isobutanol → 1,1-Dimethoxy-4-dimethylaminobut-3-en-2-one

HRID 83404

Reaktionsgleichung

Reaktionsgleichung von HRID 83404
CO[CH:3](OC)[N:4]([CH3:6])[CH3:5].[CH3:9][O:10][C:11]([O:15][CH3:16])(C)[CH:12]=[O:13].[CH2:17](O)C(C)C>>[CH3:5][N:4]([CH3:6])/[CH:3]=[CH:17]/[C:12](=[O:13])[CH:11]([O:15][CH3:16])[O:10][CH3:9]

Komponenten

4

Edukt 3

HCID 6560IsobutanolHCID 78373Dimethylformamide dimethyl acetalHCID 75681812,2-Dimethoxypropanal

Produkt 1

HCID 57095801,1-Dimethoxy-4-dimethylaminobut-3-en-2-oneAusbeute 48 %

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

A mixture of N,N-dimethylformamide dimethylacetal (86.0 g, 584 mmol) and methylglyoxal 1,1-dimethylacetal (85.6 g, 724 mmol) in isobutanol (500 mL) was heated at 100° C. overnight. The mixture was then cooled and evaporated. Purification by distillation afforded the title product (49.9 g, 48%) as an orange liquid. Bp 123-124° C. at 0.9 mbar. MS: m/e=174.4 [M+H]|.

Aufarbeitung

  1. temperatureThe mixture was then cooled
  2. customevaporated
  3. customPurification
  4. distillationby distillation

Quellen und Nachweise

ORD-Eintrag
ord-3adff59fadee4f15adb97eab48785b0d
Quelldatensatz
uspto-grants-2014_09
Patentnummer
US08846719B2

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