
(a)
Interpretation:
The site that is most likely to undergo electrophilic
Concept introduction:
The regiochemistry and relative reaction rates are governed by the stabilities of the arenium ion intermediates that are produced. The site of electrophilic addition where the arenium ion intermediate can remain aromatic is preferred for the electrophilic aromatic substitution.
(b)
Interpretation:
The site that is most likely to undergo electrophilic aromatic substitution is to be predicted.
Concept introduction:
The regiochemistry and relative reaction rates are governed by the stabilities of the arenium ion intermediates that are produced. The site of electrophilic addition where, the arenium ion intermediate can remain aromatic is preferred for the electrophilic aromatic substitution.

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Chapter 23 Solutions
Organic Chemistry: Principles and Mechanisms (Second Edition)
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