Which of the following compounds will completely fail to undergo Friedel-Crafts alkylation when trea — Aromatic Hydrocarbons Chemistry Question
Question
Which of the following compounds will completely fail to undergo Friedel-Crafts alkylation when treated with $CH_3Cl$ and anhydrous $AlCl_3$?
Answer: B
💡 Solution & Explanation
Friedel-Crafts reactions fail entirely on rings bearing powerful electron-withdrawing groups (strong meta-directors). The $-NO_2$ group makes the ring too electron-deficient to attack the carbocation.
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