Reacción #2487421

Ecuación de reacción

tri-o-tolylphosphine

4-trimethylsilyinaphth-1-ylboronic acid

9-(4-methylnaphth-1-yl)anthracene

tripotassium phosphate

→

9-(4-methylnaphth-1-yl)-10-(4-trimethylsilyinaphthyl)anthracene

Disolventes

water

toluene

dioxane

Condiciones de reacción

Tratamiento posterior

1. 1
   Otrodegassed
2. 2
   Temperaturathe mixture is refluxed for 60 h
3. 3
   TemperaturaAfter cooling
4. 4
   Otrothe organic phase is separated off
5. 5
   Lavadowashed three times with 200 ml of water
6. 6
   Secadoonce with 200 ml of saturated aqueous sodium chloride solution and subsequently dried over magnesium sulfate
7. 7
   FiltraciónAfter the desiccant has been filtered off
8. 8
   Otrothe organic phase is evaporated to dryness under reduced pressure in a rotary evaporator
9. 9
   OtroThe grey residue obtained in this way
10. 10
    Otrois recrystallised from dioxane
11. 11
    FiltraciónThe deposited crystals are filtered off with suction
12. 12
    Lavadowashed with 50 ml of ethanol
13. 13
    Otrosubsequently dried under reduced pressure

Procedimiento

1.78 g (5.6 mmol) of tri-o-tolylphosphine and 0.2 g (0.9 mmol) of palladium acetate are added to a vigorously stirred, degassed suspension of 22.8 g (93.3 mmol) of 4-trimethylsilyinaphth-1-ylboronic acid, 37.4 g (93.3 mmol) of 9-(4-methylnaphth-1-yl)anthracene and 90 g (230 mmol) of tripotassium phosphate in a mixture of 575 ml of water, 100 ml of dioxane and 860 ml of toluene, and the mixture is refluxed for 60 h. After cooling, the organic phase is separated off, washed three times with 200 ml of water and once with 200 ml of saturated aqueous sodium chloride solution and subsequently dried over magnesium sulfate. After the desiccant has been filtered off, the organic phase is evaporated to dryness under reduced pressure in a rotary evaporator. The grey residue obtained in this way is recrystallised from dioxane. The deposited crystals are filtered off with suction, washed with 50 ml of ethanol and subsequently dried under reduced pressure; yield: 38 g, 79% of theory; purity: 99.9% according to HPLC.

Fuente