N-bromobutanimide → Ethyl 2-Methyl-3-furoate

HRID 2398649

Reaktionsgleichung

Reaktionsgleichung von HRID 2398649
[C:1]([C:4](=[CH:10][CH3:11])[C:5]([O:7][CH2:8][CH3:9])=[O:6])(=[O:3])[CH3:2].BrN1C(=O)CCC1=O>C(Cl)(Cl)(Cl)Cl>[CH3:2][C:1]1[O:3][CH:11]=[CH:10][C:4]=1[C:5]([O:7][CH2:8][CH3:9])=[O:6]

Komponenten

4

Edukt 2

HCID 67184N-bromobutanimideHCID 53941670Ethyl 2-acetylbut-2-enoate

Produkt 1

HCID 261900Ethyl 2-Methyl-3-furoateAusbeute 24 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 5943Carbon TetrachlorideLösungsmittel

Versuchsvorschrift

A mixture of 3.12 g (0.02 mole) ethyl 2-acetyl-2-butenoate and 3.56 g (0.02 mole) N-bromosuccinimide in 50 ml of carbon tetrachloride was heated at reflux for 19 hours. After cooling, the insoluble succinimide was removed by filtration and the solution concentrated by rotary evaporation. Distillation of the crude product gave 0.73 g (24%) of ethyl 2-methyl-3-furoate, bp 87°-9° C. (20 mm).

Aufarbeitung

  1. temperaturewas heated
  2. temperatureat reflux for 19 hours
  3. temperatureAfter cooling
  4. customthe insoluble succinimide was removed by filtration
  5. concentrationthe solution concentrated by rotary evaporation
  6. distillationDistillation of the crude product

Quellen und Nachweise

ORD-Eintrag
ord-9b92a50ab88542f7ab03d1dc7dab9998
Quelldatensatz
uspto-grants-1977_05
Patentnummer
US04025537

Verknüpfte Notizen

Wird geladen…