Bromine → 2-Bromo-1-(2,4-dimethyl-1,3-thiazol-5-yl)ethan-1-one

HRID 477077

Reaktionsgleichung

Reaktionsgleichung von HRID 477077
[Br:1]Br.[CH3:3][C:4]1[S:5][C:6]([C:10](=[O:12])[CH3:11])=[C:7]([CH3:9])[N:8]=1>C(O)(=O)C>[CH3:3][C:4]1[S:5][C:6]([C:10](=[O:12])[CH2:11][Br:1])=[C:7]([CH3:9])[N:8]=1

Komponenten

4

Edukt 2

HCID 24408BromineHCID 5208882,4-Dimethyl-5-acetylthiazole

Produkt 1

HCID 126684222-Bromo-1-(2,4-dimethyl-1,3-thiazol-5-yl)ethan-1-one

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 176Acetic AcidLösungsmittel2×

Versuchsvorschrift

A solution of 20.8 g (0.13 mol) of bromine in 50 ml of glacial acetic acid is slowly added dropwise to a solution of 20.2 g (0.13 mol) of 2,4-dimethyl-5-acetyl-thiazole in glacial acetic acid, heated to reflux. After 1 hour, the mixture is evaporated to dryness, the residue is dissolved in water, and the solution is neutralised with sodium carbonate solution. The mixture is then extracted several times with methylene chloride, and the organic phase is dried and concentrated. The oil which was obtained in this way was used for further reactions without further purification.

Aufarbeitung

  1. temperatureheated to reflux
  2. customthe mixture is evaporated to dryness
  3. dissolutionthe residue is dissolved in water
  4. extractionThe mixture is then extracted several times with methylene chloride
  5. customthe organic phase is dried
  6. concentrationconcentrated
  7. customThe oil which was obtained in this way
  8. customwas used for further reactions without further purification

Quellen und Nachweise

ORD-Eintrag
ord-c100fbbbf50548f48e62e2bdcef297b7
Quelldatensatz
uspto-grants-1989_12
Patentnummer
US04886814

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