In the electrophilic aromatic substitution of a meta-disubstituted benzene derivative, why is the in — Aromatic Hydrocarbons Chemistry Question
Question
In the electrophilic aromatic substitution of a meta-disubstituted benzene derivative, why is the introduction of a third substituent between the two existing groups (at position 2) generally the minor product?
Answer: C
💡 Solution & Explanation
When two groups are meta to each other, the position directly between them (position 2) is often electronically activated (if the groups are $m$ -directors or $o/p$ -directors reinforcing it). However, attack at this position is sterically hindered by the two adjacent groups, making it the least likely site of attack, especially for bulky electrophiles.
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