BRAINCAKEBromination of Benzene
Benzene reacts with bromine to form bromobenzene by electrophilic substitution.
Conditions: liquid bromine with a halogen carrier catalyst such as iron(III) bromide, FeBr3, or iron filings (which react with bromine to make FeBr3), at room temperature. Aluminium bromide can also be used. Benzene does not react with bromine water, because Br2 on its own is not a strong enough electrophile to disrupt the delocalised ring.
Overall:
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Key terms in this lesson
- halogen carrier
- A catalyst, such as AlCl3 or FeBr3, that generates a strong electrophile from a halogen or halogen compound in electrophilic substitution of arenes.
More in Arenes
- The Delocalised Model of Benzene
- Evidence for Delocalisation
- Combustion of Benzene
- Electrophilic Substitution
- Nitration of Benzene
- Friedel-Crafts Alkylation
- Friedel-Crafts Acylation
- Phenol
All 13 lessons in Arenes · All Edexcel A-level Chemistry topics