Question

QUESTION

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

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Harsh Pratap Singh ​

Answer 1

The (-OH) group is an electron-donating group. Thus, it increases the electron density in the benzene ring in the resonance structure of phenol. As a result, the benzene ring is activated towards electrophilic substitution.

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Answer 2

The hydroxy group (−OH) is an electron releasing group. It increases the electron density (through resonance) in the benzene ring. Hence, hydroxyl group activates the benzene ring towards electrophilic substitution.