Reaktion #2171036

Reaktionsgleichung

4-bromo-2,6-difluoroaniline

benzyl bromide

potassium carbonate

→

dibenzyl(4-bromo-2,6-difluorophenyl)amine

Ausbeute 85.6%

Lösungsmittel

acetonitrile

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturis refluxed for 48 hours
2. 2
   SonstigeThe mixture is subsequently evaporated in a rotary evaporator
3. 3
   workup.DISSOLUTIONthe residue is dissolved in toluene
4. 4
   Extraktionextracted with hydrochloric acid (10%)
5. 5
   Sonstigethe toluene phase is evaporated in a rotary evaporator
6. 6
   workup.STIRRINGstirred with silica gel for about 4.5 hours
7. 7
   Filtrationfiltered with suction
8. 8
   Sonstigeevaporated in a rotary evaporator

Vorschrift

A suspension of 416 g of 4-bromo-2,6-difluoroaniline, 752 g of benzyl bromide and 608 g of potassium carbonate in 2 l of acetonitrile is refluxed for 48 hours. The mixture is subsequently evaporated in a rotary evaporator, the residue is dissolved in toluene and extracted with hydrochloric acid (10%), the toluene phase is evaporated in a rotary evaporator, and the product is stirred into heptane and stirred with silica gel for about 4.5 hours, filtered with suction and evaporated in a rotary evaporator, giving dibenzyl(4-bromo-2,6-difluorophenyl)amine, yield 85.6%.

Quelle