Explain the difference in reactivity between benzene and phenol with bromine?

Phenol reacts with bromine at room temperature with no catalyst as the hydroxyl group activates the ring by donating a pi electron. This donated electron increases the electron density of the ring hence allowing it to polarise a Br2 molecule and create a partially positive Br which can undergo nucleophilic attack.Benzene does not react with bromine on its own and requires a halogen carrier (FeBr3). This is because the ring is not activated and can not polarise bromine on its own. The halogen carrier reacts with bromine to create a bromine cation which can more easily undergo nucleophilic attack and allows a reaction with benzene.

RL
Answered by Reece L. Chemistry tutor

8387 Views

See similar Chemistry A Level tutors

Related Chemistry A Level answers

All answers ▸

In order to find the [H+] ion content of H2SO4 (Sulphuric Acid), why must you divide by two after using the formula for pH calculation?


Explain what is meant by optical isomerism.


Explain Optical Isomerism


What is Effective Nuclear Charge?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences