Organic Chemistry 2 Midterm - Part 2 of 4
SAMPLE
Please be aware that you practice a sample exam set, which means that it’s mimicking a real exam. In order to have more accurate experience:
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19. Reactions of Aromatics: EAS and Beyond / Blocking Groups - Sulfonic Acid / Problem 13
Unlike other electrophilic aromatic substitutions, benzene sulfonation is reversible. Sulfonic acid can be added to the benzene ring and removed later. This makes the sulfonic acid group alternatively known as the "blocking group." Show how to synthesize 1,2,3-tribromobenzene starting from benzene, using sulfonation and de-sulfonation as intermediate steps.
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