18. Reactions of Aromatics:EAS and Beyond
Electron Withdrawing Groups
34PRACTICE PROBLEM
Biphenyl is an aromatic compound having two benzene rings joined by a single bond. The site of an electrophilic aromatic reaction is usually the one that is on the more activated ring. The other ring and other substituents (if present) also affect the reaction regiochemistry.
For the following reaction, use resonance forms of a sigma complex to explain the observed regiochemistry.
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Biphenyl is an aromatic compound having two benzene rings joined by a single bond. The site of an electrophilic aromatic reaction is usually the one that is on the more activated ring. The other ring and other substituents (if present) also affect the reaction regiochemistry.
For the following reaction, use resonance forms of a sigma complex to explain the observed regiochemistry.