Reaktion #601353

Reaktionsgleichung

5,6-bis(4-bromophenyl)-2,2′-bipyridine

sodium carbonate

toluene

10-phenylanthracene-9-boronic acid

→

light yellow powder

Ausbeute 43.0%

5,6-bis[4-(10-phenyl-9-anthryl)phenyl]-2,2′-bipyridine

Ausbeute 43.0%

Lösungsmittel

methanol

water

ethanol

water

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeIn a 100-mL three-neck flask were put
2. 2
   SonstigeThe mixture was degassed
3. 3
   Sonstigeto separate an aqueous layer
4. 4
   Extraktionan organic layer, and then an organic substance was extracted with toluene from the aqueous layer
5. 5
   ExtraktionThe obtained extracted solution
6. 6
   Waschenwashed with saturated saline
7. 7
   Sonstigethe aqueous layer and the organic layer are separated
8. 8
   Trocknenthe organic layer was dried with magnesium sulfate
9. 9
   Filtrationfiltered
10. 10
    Einengenthe obtained filtrate was concentrated
11. 11
    Sonstigeto give an oily substance
12. 12
    SonstigeThe obtained oily substance was purified by silica gel column chromatography (toluene), so that a solid
13. 13
    Sonstigewas obtained
14. 14
    Sonstigewas irradiated with ultrasonic waves
15. 15
    Filtrationa solid was collected by suction filtration
16. 16
    SonstigeThe obtained solid was recrystallized with toluene

Vorschrift

In a 100-mL three-neck flask were put 0.74 g (1.6 mmol) of 5,6-bis(4-bromophenyl)-2,2′-bipyridine, 1.1 g (3.7 mmol) of 10-phenylanthracene-9-boronic acid, 0.79 g (7.4 mmol) of sodium carbonate, 20 mL of toluene, 5 mL of ethanol, and 5 mL of water. The mixture was degassed by being stirred under reduced pressure, and the air in the flask was replaced with nitrogen. To this mixture was added 74 mg (0.14 mmol) of tetrakis(triphenylphosphine)palladium(0), and the mixture was refluxed at 120° C. under a nitrogen stream for ten hours. After a predetermined time, water was added to this mixture to separate an aqueous layer and an organic layer, and then an organic substance was extracted with toluene from the aqueous layer. The obtained extracted solution and the organic layer were combined and washed with saturated saline, the aqueous layer and the organic layer are separated, and the organic layer was dried with magnesium sulfate. The mixture was gravity filtered, and the obtained filtrate was concentrated to give an oily substance. The obtained oily substance was purified by silica gel column chromatography (toluene), so that a solid was obtained. A methanol suspension of the obtained solid was irradiated with ultrasonic waves, and a solid was collected by suction filtration. The obtained solid was recrystallized with toluene to give 0.56 g of light yellow powder, which was the objective substance, in a yield of 43%. The synthesis scheme of this reaction is shown below.

Quelle