NEET Chemistry Substitution Reactions MCQ Question
Consider a diagram showing the mechanism of the electrophilic substitution reaction of benzene with chlorine in the presence of anhydrous AlCl3. Which step involves the loss of aromatic character of benzene?
Formation of the sigma complex
Generation of the electrophile
Removal of the proton
Formation of the carbocation intermediate
Correct Answer
Detailed Explanation
The sigma complex or arenium ion forms during electrophilic substitution reactions, causing the loss of aromatic character as the delocalization of electrons is interrupted.
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