Water → Methyl 2-bromo-3-cyclopropyl-3-oxopropanoate

HRID 389103

Reaktionsgleichung

Reaktionsgleichung von HRID 389103
[CH:1]1([C:4](=[O:10])[CH2:5][C:6]([O:8][CH3:9])=[O:7])[CH2:3][CH2:2]1.Cl([O-])(=O)(=O)=O.[Mg+2].Cl([O-])(=O)(=O)=O.[Br:22]N1C(=O)CCC1=O.O>C(OCC)(=O)C>[Br:22][CH:5]([C:4]([CH:1]1[CH2:3][CH2:2]1)=[O:10])[C:6]([O:8][CH3:9])=[O:7]

Komponenten

6

Edukt 4

HCID 962WaterHCID 24840Magnesium perchlorateHCID 67184N-bromobutanimideHCID 101300163-Cyclopropyl-3-Oxopropionic Acid Methyl Ester

Produkt 1

HCID 58243876Methyl 2-bromo-3-cyclopropyl-3-oxopropanoateAusbeute 106,8 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

Methyl 3-cyclopropyl-3-oxopropanoate (2.0 g) and magnesium perchlorate (940 mg) were dissolved in ethyl acetate (20 ml), followed by stirring at room temperature for 5 minutes, and N-bromosuccinimide (2.76 g) was added thereto, followed by stirring at room temperature for 4 hours. Water was added thereto, followed by extraction with ethyl acetate, the organic layer was washed with water and saturated brine and was dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure to obtain, as a colorless oily product, methyl 2-bromo-3-cyclopropyl-3-oxopropanoate (3.32 g).

Aufarbeitung

  1. stirringby stirring at room temperature for 4 hours
  2. extractionfollowed by extraction with ethyl acetate
  3. washthe organic layer was washed with water and saturated brine
  4. dry with materialwas dried over anhydrous magnesium sulfate
  5. customthe solvent was evaporated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-867fd3f19a2344928aaca2959a94929d
Quelldatensatz
uspto-grants-2013_02
Patentnummer
US08377923B2

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