8 - Bromination And Uses Of Phenols

Question 0

What happens in this reaction? What is the equation for this reaction?

Answer 0

The orange colour of bromine water disappears, and a white precipitate forms. C6H5OH + 3Br2 -> C6H2Br3OH + 3HBr. The product is tribromophenol.

Question 1

What happens if you add Bromine to a Phenol?

Answer 1

Phenol will undergo substitution at room temperature without a halogen carrier.

Question 2

Why does phenol react more readily than benzene?

Answer 2

A lone pair of P electrons on the oxygen atom on the phenol group is drawn towards the benzene ring. This increases the electron snooty in the ring, and so it’s activated. This increased electron density polarised Bromine molecules, and so they are more strongly attracted towards the ring structure.

Question 3

What increases electrophilic reactivity?

Answer 3

Increasing the electron density of phenol’s ring increases the reactivity to all electrophiles.

Question 4

What may phenol be used for?

Answer 4

Phenol is used in dyed, aspiration production,

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