Reacción #622417

Ecuación de reacción

sodium thiosulfate

9-phenylanthracene

carbon tetrachloride

carbon tetrachloride

bromine

→

9-bromo-10-phenylanthracene

Disolventes

Methanol

Condiciones de reacción

Tratamiento posterior

1. 1
   workup.WAITAfter a certain period
2. 2
   workup.STIRRINGstirred for 1 hour
3. 3
   Extracciónan aqueous layer of the mixture was extracted with chloroform
4. 4
   ExtracciónThe obtained extracted solution
5. 5
   Lavadowashed with a 0.10 M sodium thiosulfate solution
6. 6
   Secadoa saturated aqueous solution of sodium hydrogen carbonate, and saturated saline in this order, and then, the organic layer was dried with magnesium sulfate
7. 7
   Filtraciónfiltered
8. 8
   Otrocondensed
9. 9
   Otroto give a solid
10. 10
    FiltraciónA toluene solution of the solid was subjected to suction filtration through Celite (produced by Wako Pure Chemical Industries, Ltd., Catalog No. 531-16855), Florisil (produced by Wako Pure Chemical Industries, Ltd., Catalog No. 540-00135), and alumina
11. 11
    Otrocondensed
12. 12
    Otroto give a solid
13. 13
    Otrothis suspension was irradiated with ultrasonic waves
14. 14
    Otrowas obtained by suction filtration in a yield of 84%

Procedimiento

In a 300 mL three-neck flask, 5.8 g (23 mmol) of 9-phenylanthracene and 100 mL of carbon tetrachloride were placed. Then, 30 mL of a carbon tetrachloride solution containing 4.0 g (25 mmol) of bromine was dripped into the mixture under nitrogen stream. After dripping, the solution was stirred for 12 hours at room temperature. After a certain period, 100 mL of a 1.0 M sodium thiosulfate solution was added and stirred for 1 hour, and an aqueous layer of the mixture was extracted with chloroform. The obtained extracted solution and the organic layer were combined and washed with a 0.10 M sodium thiosulfate solution, a saturated aqueous solution of sodium hydrogen carbonate, and saturated saline in this order, and then, the organic layer was dried with magnesium sulfate. The mixture was gravity filtered, and the obtained filtrate was condensed to give a solid. A toluene solution of the solid was subjected to suction filtration through Celite (produced by Wako Pure Chemical Industries, Ltd., Catalog No. 531-16855), Florisil (produced by Wako Pure Chemical Industries, Ltd., Catalog No. 540-00135), and alumina, and the filtrate was condensed to give a solid. Methanol was added to the solid, and this suspension was irradiated with ultrasonic waves. Then, 6.4 g of a solid substance, which was target pale yellow powder, was obtained by suction filtration in a yield of 84%.

Fuente