SELECT * FROM question_mgmt as q WHERE id=2011 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=3 AND subId=9 AND chapterId=66 and ex_no='2' AND status=1 ORDER BY CAST(question_no AS UNSIGNED)

Question:

Explain how does the -OH group attached to a carbon of benzene ring activate it towards electrophilic substitution?

Answer:

The -OH group is an electron-donating group. Thus, it increases the electron density in the benzene ring as shown in the given resonance structure of phenol.

As a result, the benzene ring is activated towards electrophilic substitution.


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