19. Reactions of Aromatics: EAS and Beyond
Electrophilic Aromatic Substitution
4:20 minutes
Problem 17-14a
Textbook Question
Textbook QuestionBiphenyl is two benzene rings joined by a single bond. The site of substitution for a biphenyl is determined by (1) which phenyl ring is more activated (or less deactivated), and (2) which position on that ring is most reactive, using the fact that a phenyl substituent is activating and ortho, para-directing.
(a) Use resonance forms of a sigma complex to show why a phenyl substituent should be ortho, para-directing.
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