Benzeneacetonitrile, 4-bromo- → Methyl 2-(4-(cyanomethyl)benzyl)-3-oxobutanoate

HRID 2387886Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2387886
[OH:1][CH:2]([CH3:9])[C:3](=[CH2:8])[C:4]([O:6][CH3:7])=[O:5].Br[C:11]1[CH:16]=[CH:15][C:14]([CH2:17][C:18]#[N:19])=[CH:13][CH:12]=1.C([O-])(O)=O.[Na+]>[Br-].C([N+](CCCC)(CCCC)CCCC)CCC.C1COCC1.CCOCC>[C:18]([CH2:17][C:14]1[CH:15]=[CH:16][C:11]([CH2:8][CH:3]([C:2](=[O:1])[CH3:9])[C:4]([O:6][CH3:7])=[O:5])=[CH:12][CH:13]=1)#[N:19]

Komponenten

7

Edukt 3

HCID 27914Benzeneacetonitrile, 4-bromo-HCID 516892Sodium BicarbonateHCID 5080248Methyl 3-hydroxy-2-methylen-butanoat

Produkt 1

HCID 59590640Methyl 2-(4-(cyanomethyl)benzyl)-3-oxobutanoate

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 74236Tetrabutylammonium BromideKatalysatorHCID 3283Diethyl EtherLösungsmittelHCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

A stirred mixture of methyl 3-hydroxy-2-methylenebutanoate (19.5 g), 2-(4-bromophenyl)acetonitrile (40 g), PdOAc2 (2 g), tetrabutylammonium bromide (40 g) and NaHCO3 (31.5 g) in THF (300 ml) was heated under N2 at reflux for 24 h. The mixture was cooled, diluted with ether (500 ml) and filtered through celite. The filtrate was washed with water, dried and evaporated under reduced pressure to give an oil, used crude in next step.

Aufarbeitung

  1. temperaturewas heated under N2
  2. temperatureat reflux for 24 h
  3. temperatureThe mixture was cooled
  4. filtrationfiltered through celite
  5. washThe filtrate was washed with water
  6. customdried
  7. customevaporated under reduced pressure
  8. customto give an oil

Quellen und Nachweise

ORD-Eintrag
ord-417309f09bfe44d385ebdea262e8db55
Quelldatensatz
uspto-grants-2012_09
Patentnummer
US08268990B2

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