Potassium Carbonate → 4-([1,1'-Biphenyl]-2 yl)-1H-indene

HRID 923731Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 923731
Br[C:2]1[CH:10]=[CH:9][CH:8]=[C:7]2[C:3]=1[CH:4]=[CH:5][CH2:6]2.[C:11]1([C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=2)[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=1B(O)O.C(=O)([O-])[O-].[K+].[K+].O1CCOCC1>C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.Cl[Pd]Cl.O>[C:11]1([C:20]2[CH:21]=[CH:22][CH:23]=[CH:24][CH:25]=2)[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=1[C:2]1[CH:10]=[CH:9][CH:8]=[C:7]2[C:3]=1[CH:4]=[CH:5][CH2:6]2

Komponenten

7

Edukt 4

HCID 11430Potassium CarbonateHCID 312751,4-DioxaneHCID 4589187Biphenyl-2-boronic acidHCID 156376244-Bromo-1H-indene

Produkt 1

HCID 219183954-([1,1'-Biphenyl]-2 yl)-1H-indeneAusbeute 91 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6102075Dichlorobis(triphenylphosphine)palladiumKatalysatorHCID 962WaterLösungsmittel2×

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

A mixture of compound 4 (40 g, 205 mmol, 1 equiv), (biphenyl-2-yl)boronic acid (81.2 g, 410 mmol, 2 equiv), powdered potassium carbonate (85 g, 615 mmol, 3 equiv), and bis(triphenylphosphine)palladium(II)dichloride (7.2 g, 10.3 mmol, 0.05 equiv), 1,4-dioxane (300 mL) and water (150 mL) was heated overnight at 80° C. The reaction was poured into 500 mL of water and extracted with ethyl acetate (3×400 mL). The combined organic layers were washed with saturated brine (300 mL), dried over sodium sulfate, and concentrated under reduced pressure. The resulting residue was purified over silica gel (400 g) eluting with heptanes to give compound (8) (50 g, 91% yield) as a light-yellow oil that slowly turned to an off-white solid on standing.

Aufarbeitung

  1. extractionextracted with ethyl acetate (3×400 mL)
  2. washThe combined organic layers were washed with saturated brine (300 mL)
  3. dry with materialdried over sodium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe resulting residue was purified over silica gel (400 g)
  6. washeluting with heptanes

Quellen und Nachweise

ORD-Eintrag
ord-6ab990d6f9c0416a9a6948c54f5cff59
Quelldatensatz
uspto-grants-2016_03
Patentnummer
US09279024B2

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