Reaktion #621871

Reaktionsgleichung

Dibromodifluoromethane

thiophenol

NaH

Water

→

[(bromodifluoromethyl)sulfanyl]benzene

Lösungsmittel

DMF

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeIn a three-necked round-bottomed flask placed under a nitrogen atmosphere
2. 2
   Sonstigetopped with a dry-ice condenser and a dropping funnel
3. 3
   Temperaturthen cooled to −50° C
4. 4
   workup.STIRRINGThe mixture was then stirred for 3 h at this temperature
5. 5
   Sonstige30 min
6. 6
   Sonstigeat ambient temperature
7. 7
   Extraktionthe product was extracted with ethyl ether (3×100 ml)
8. 8
   WaschenThe organic phases were washed with water (3×100 ml)
9. 9
   Trocknendried over MgSO4
10. 10
    SonstigeAfter evaporation of the solvent
11. 11
    workup.DISTILLATIONthe residue was purified by distillation under reduced pressure (97° C./34 mmHg)

Vorschrift

In a three-necked round-bottomed flask placed under a nitrogen atmosphere, topped with a dry-ice condenser and a dropping funnel, thiophenol (10.2 ml, 100 mmol) was added dropwise, over 40 min at 0° C., to a suspension of NaH (6 g, 150 mmol) in anhydrous DMF (100 ml). The mixture was then stirred at 0° C. for 30 min then cooled to −50° C. Dibromodifluoromethane (27 ml, 300 mmol) was then added at −50° C. The mixture was then stirred for 3 h at this temperature, then 30 min at ambient temperature. Water (100 ml) was added to the reaction mixture, then the product was extracted with ethyl ether (3×100 ml). The organic phases were washed with water (3×100 ml) and dried over MgSO4. After evaporation of the solvent, the residue was purified by distillation under reduced pressure (97° C./34 mmHg) to give the product [(bromodifluoromethyl)sulfanyl]benzene in the form of a colorless liquid (15.3 g, 60%).

Quelle