Reaktion #338940

Reaktionsgleichung

2,4′-dibromo acetophenone

1,2-phenylenediamine

→

2-(4-bromo-phenyl)-quinoxaline

Ausbeute 41.0%

Lösungsmittel

ethanol

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeAfter completion of the reaction
2. 2
   Sonstigeresultant crystals were separated with filtration
3. 3
   Waschenwashed with ethanol

Vorschrift

Ten grams (36 mmol) of 2,4′-dibromo acetophenone and 4.0 g (37 mmol) of 1,2-phenylenediamine were refluxed under heating among 20 milliliter of ethanol for 3.5 hours. After completion of the reaction, resultant crystals were separated with filtration, washed with ethanol, thereby obtaining 4.2 g of 2-(4-bromo-phenyl)-quinoxaline (yield: 41%).

Quelle