Phosphine tribromide → 4'-(1-Bromoethyl)biphenyl-2-carbonitrile

HRID 1688768Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1688768
O[CH:2]([C:4]1[CH:9]=[CH:8][C:7]([C:10]2[C:11]([C:16]#[N:17])=[CH:12][CH:13]=[CH:14][CH:15]=2)=[CH:6][CH:5]=1)[CH3:3].[Br-:18].[Br-].[Br-].P>C1(C)C=CC=CC=1>[Br:18][CH:2]([C:4]1[CH:9]=[CH:8][C:7]([C:10]2[C:11]([C:16]#[N:17])=[CH:12][CH:13]=[CH:14][CH:15]=2)=[CH:6][CH:5]=1)[CH3:3]

Komponenten

4

Edukt 2

HCID 21862892Phosphine tribromideHCID 670083834'-(1-Hydroxyethyl)biphenyl-2-carbonitrile

Produkt 1

HCID 670085584'-(1-Bromoethyl)biphenyl-2-carbonitrileAusbeute 87,1 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel

Versuchsvorschrift

To a solution (15 mL) of 4′-(1-hydroxyethyl)biphenyl-2-carbonitrile (3.52 g) in toluene was added phosphine tribromide (5.00 g) at room temperature, and the mixture was stirred at room temperature overnight. The reaction mixture was concentrated, and the residue was dissolved in ethyl acetate. The obtained ethyl acetate solution was washed with saturated aqueous sodium hydrogen carbonate and then with saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography to give the title compound as a pale-yellow oil (3.93 g, 87%).

Aufarbeitung

  1. concentrationThe reaction mixture was concentrated
  2. dissolutionthe residue was dissolved in ethyl acetate
  3. washThe obtained ethyl acetate solution was washed with saturated aqueous sodium hydrogen carbonate
  4. dry with materialwith saturated brine, and dried over anhydrous magnesium sulfate
  5. customThe solvent was evaporated under reduced pressure
  6. customthe residue was purified by silica gel column chromatography

Quellen und Nachweise

ORD-Eintrag
ord-551aeebb704e40b58b5fe86b52f55b77
Quelldatensatz
uspto-grants-2012_04
Patentnummer
US08148383B2

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