Reaktion #58431

Reaktionsgleichung

1-(3-fluorophenyl)ethanone

bromine

→

2-bromo-1-(3-fluorophenyl)ethanone

Lösungsmittel

dioxane

dioxane

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigeremoved
2. 2
   Waschenwashed 2× water
3. 3
   Trocknendried (MgSO4)
4. 4
   SonstigeSolvent was removed

Vorschrift

A solution of 1-(3-fluorophenyl)ethanone (14.0 g, 100 mmol) (Aldrich) in dioxane (250 mL) at 12-15° C. was treated with a solution of bromine (17 g, 105 mmol) in dioxane (120 mL) drop wise over 0.5 h. This was stirred for 15 min and most of the solvent removed. The residue was taken up in hexane (200 mL), washed 2× water, and dried (MgSO4). Solvent was removed to give 2-bromo-1-(3-fluorophenyl)ethanone. 1H NMR (CDCl3), 300 MHz) δ3.71 (s, 2H, CH2), 7.30-7.77(m, 4H, Aromatic).

Quelle