Which of the following specific aryl halides predictably undergoes nucleophilic substitution primari — Haloalkanes and Haloarenes Chemistry Question

💡 Solution & Explanation

Activated aryl halides possessing strongly electron-withdrawing groups (like $-NO_2$) perfectly positioned at the ortho or para positions undergo standard addition-elimination ($S_NAr$). However, unactivated or deactivated aryl halides lacking these precisely positioned stabilizing groups (such as $m$ -bromobenzotrifluoride) undergo substitution exclusively via the highly strained benzyne intermediate mechanism.