Unformatted text preview: on. 12.4
Sulfonation of Benzene Sulfonation of Benzene
Can be performed with sulfuric acid and heat or sulfur trioxide
and sulfuric acid. Sulfonation of Benzene
The electrophile is sulfur trioxide which has a positively
charged sulfur. Mechanism of Sulfonation
Step 1. Addition of the electrophile. Step 2. Deprotonation of the σ-complex. Step 3. Protonation of the sulfonate. 12.5
Halogenation of Benzene Bromination of Benzene
Reaction equation: Formation of the electrophile: Lewis acid-base complex
the active electrophile Mechanism of Bromination
Step 1. Addition of the elec...
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This note was uploaded on 03/22/2014 for the course CHEM 330 taught by Professor Shen during the Fall '08 term at Northern Illinois University.
- Fall '08