Bromotrichloromethane → Ethyl 2-acetyl-2-bromobutyrate

HRID 654610

Reaktionsgleichung

Reaktionsgleichung von HRID 654610
[C:1]([CH:4]([CH2:10][CH3:11])[C:5]([O:7][CH2:8][CH3:9])=[O:6])(=[O:3])[CH3:2].[Br:12]C(Cl)(Cl)Cl.O.O.O.[F-].C([N+](CCCC)(CCCC)CCCC)CCC>>[C:1]([C:4]([Br:12])([CH2:10][CH3:11])[C:5]([O:7][CH2:8][CH3:9])=[O:6])(=[O:3])[CH3:2]

Komponenten

4

Edukt 3

HCID 6383BromotrichloromethaneHCID 79065Butanoic acid, 2-ethyl-3-oxo-, ethyl esterHCID 11726816Tetrabutylammonium Fluoride Trihydrate

Produkt 1

HCID 11009975Ethyl 2-acetyl-2-bromobutyrateAusbeute 56,5 %

Versuchsvorschrift

In a 10 mL round-bottom flask, 1.58 g of ethyl 2-acetylbutyrate (10 mmol), 2.1 g bromotrichloromethane (10.5 mmol), and 200 mg of tetra-n-butylammonium fluoride trihydrate (0.632 mmol) were mixed at 24° C. for 1 h. Gas chromatographic analysis of the resulting mixture showed the presence of 1.34 g of ethyl 2-acetyl-2-bromobutyrate (56% yield).

Quellen und Nachweise

ORD-Eintrag
ord-402593d179124bc695f6000a2107b035
Quelldatensatz
uspto-grants-1992_07
Patentnummer
US05132475

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