Which is most reactive toward electrophilic aromatic substitution?

Complete Question

Which is most reactive toward electrophilic aromatic substitution?

A  Phenol

B  Anisole

C  Nitro-benzene

D  Benzene

The correct option is  A

Explanation:

Generally the rate at which electrophilic aromatic substitution reaction occur is dependent on the nucleophilicity(nucleophile strength  ) of Benzene ring.Now a functional group  which increase the electron density in the benzene ring when attached to it increases its  nucleophilicity and this in-turn will increase the rate at which electrophilic aromatic substitution reaction occur

Now   Phenol is a compound that is made up of  OH functional group and then the benzene ring

    Anisole is a compound that is made up of   functional group and then the benzene ring

    Nitro-benzene is a compound that is made up of   functional group and then the benzene ring  

Now since OH is the highest In series of activating group compared to the activation groups we are considering (i.e    and )

Then  Phenol is the answer

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explanation: