Reaktion #1617922

Reaktionsgleichung

9-Phenyl-3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-9H-carbazole

1-Iodo-4-Brombenzene

sodium carbonate

→

3-(4-Iodo-phenyl)-9-phenyl-9H-carbazole

Lösungsmittel

toluene

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe reaction mixture is carefully degassed
2. 2
   workup.ADDITION200 mg tetrakistriphenylphosphine palladiume are added
3. 3
   TemperaturThe reaction is heated
4. 4
   Temperaturto reflux for 20 h
5. 5
   Sonstigethe layers are separated
6. 6
   ExtraktionThe water phase is extracted three times with toluene
7. 7
   Waschenthe organic layers is washed twice with water
8. 8
   Trocknendried over magnesium sulphate
9. 9
   Filtrationfiltrated
10. 10
    Sonstigethe solvent is removed in the vacuum
11. 11
    SonstigeThe residue is recrystallized from DMF
12. 12
    Sonstigeto yield 100 g (225 mmol) (92%) of a with powder with a purity of 98.7%

Vorschrift

90 g (244 mmol) 9-Phenyl-3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-9H-carbazole and 69 g (244 mmol) 1-Iodo-4-Brombenzene [589-87-7] are dissolved in 500 ml toluene treated with 200 ml of a 2 M solution of sodium carbonate. The reaction mixture is carefully degassed and 200 mg tetrakistriphenylphosphine palladiume are added. The reaction is heated to reflux for 20 h. The solution is then cooled to room temperature and the layers are separated. The water phase is extracted three times with toluene, and then the organic layers is washed twice with water dried over magnesium sulphate, filtrated and the solvent is removed in the vacuum. The residue is recrystallized from DMF, to yield 100 g (225 mmol) (92%) of a with powder with a purity of 98.7%.

Quelle