Electrophilic Arom. Subst., Reactivity (12 min)

This tutorial extends the discussion of electrophilic aromatic substitution reactions to polysubstituted benzene rings. It answers the question "where will a reaction take place on the benzene ring if it already contains a substituent?" (Runtime = 24:18)

Student Learning Outcomes
After viewing this tutorial and practicing problems from this website and your textbook, you should be able to:
• Determine if a substituent on a benzene ring is activating or deactivating its implications on the reactivity of the compound.
• Predict the relative rates of reaction for different substituted benzenes.
• Understand the theory behind the regioselectivity exhibited in electrophilic aromatic substitution reactions of substituted benzenes.
• Predict the product of an electrophilic aromatic substitution reaction of a substituted benzene.

Practice Problems
Here are some problems to get you started. You should first try each on a piece of paper. Then, place your cursor over the graphic and click on right arrow that appears to see the answer. The right and left arrows allow you to move back and forth between problems. Please note that these are not the only types of problems/questions that exist on this topic. Refer to your textbook and any problems your instructor provides you for more practice with this subject.


© Thomas Poon 1999