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Explain how does the -OH group attached to a carbon of benzene ring activate it towards electrophilic substitution ? |
Answer» Solution :`to` The -OH group is electron releasing groups. It increases the electron density at ortho and para positions through resonance. The electrophiles being electron deficient in nature attacks the ring at electron high density regions, i.e., ortho and para- positions. THUS, -OH group of benzene activates the ring towards electrophilic substitution reaction.  `to` From the structures II, III and IV, it is clear that ortho and para positions are most active sites for the electrophilic ATTACK. |
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