Citraconic Anhydrides → 3-BroMo-4-Methylfuran-2,5-dione

HRID 249990

Reaktionsgleichung

Reaktionsgleichung von HRID 249990
[CH3:1][C:2]1[C:3](=[O:8])[O:4][C:5](=[O:7])[CH:6]=1.[Al](Br)(Br)[Br:10].BrBr>C(OCC)(=O)C>[Br:10][C:6]1[C:5](=[O:7])[O:4][C:3](=[O:8])[C:2]=1[CH3:1]

Komponenten

5

Edukt 3

HCID 12012Citraconic AnhydridesHCID 24408BromineHCID 24409Aluminum bromide

Produkt 1

HCID 105838543-BroMo-4-Methylfuran-2,5-dioneAusbeute 9.023,2 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8857Ethyl AcetateLösungsmittel

Reaktionsbedingungen

Temperatur
120 °C

Versuchsvorschrift

A mixture of 3-methyl-2,5-furandione (citraconic anhydride, 1 g), AlBr3 (26 mg) and Br2 (0.46 mL) was heated at 120° C. overnight. Ethyl acetate was then added and the organic phase was washed with HCl 0.1% and then with brine. The organic phase was dried and concentrated in vacuo to give the crude product (1.680 g) that was used without further purification.

Aufarbeitung

  1. washthe organic phase was washed with HCl 0.1%
  2. customThe organic phase was dried
  3. concentrationconcentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-7740d3fce82847729128eaba9969fa7f
Quelldatensatz
uspto-grants-2011_01
Patentnummer
US07863299B2

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