H Bromination of Benzene Requires a stronger electrophile than Br2. Use a strong Lewis acid catalyst,FeBr3. :Br-Br:FeBr3→ Br-Br—FeBr3 H Animation H H H H H Br Br-Br-FeBr3 +FeBr4 H Animation H Animation + HBr => Chapter 17Chapter 17 4 Bromination of Benzene • Requires a stronger electrophile than Br2 . • Use a strong Lewis acid catalyst, FeBr3 . Br Br FeBr 3 Br Br FeBr 3 Animation Br Br FeBr3 H H H H H H H H H H H H Br + + FeBr4 _ Animation Br Animation + HBr =>