What happens when bromination of phenol take place?
We know that the reaction of phenol and water with bromine is known as bromination of phenol. It is so because in aqueous medium phenol ionizes to form peroxide ion. Due to the presence of negative ions the ring gets highly activated and tri substitution occurs and the formation of 2,4,6 – tribromophenol takes place.
What happens when phenol reacts with Br2 in presence of cs2?
Phenol reacts with Br2 in CS2 at low temperature to give o-and p-promophenols.
What kind of reaction is involved in bromination of phenol?
Action of bromine on phenol in the presence of different catalysts. When bromine water is added to phenol, white ppt of 2,4,6-tribromophenol appears. This is an electrophilic substitution reaction.
Why does phenol react with bromine?
The hydroxyl group is a strongly activating group and would make the aromatic ring easier to brominate. So, phenol undergoes bromination faster than benzene. Phenol reacts with bromine/water to give a tribrominated phenol.
Why does phenol give tribromo phenol on bromination with bromine water?
Phenol reacts with bromine water to give 2,4,6-tribromophenol. And Bromine ions are highly stabilized in ionic solvents.So the formation of strong o/p directing group and stabilization of Br+ enhances the formation of tribromophenol.
What happens when phenol reacts with I bromine in CS2 II bromine in h2o?
(i) When the reaction is carried out in solvents of low polarity such as CHCl3 or CS2 and at low temperature, monobromophenols are formed. (ii) When phenol is treated with bromine water, 2,4,6- tribromophenol is formed as white precipitate.
How and under what condition does phenol react with bromine?
For example, as you will find below, phenol will react with a solution of bromine in water (bromine water) in the cold and in the absence of any catalyst. It also reacts with dilute nitric acid, whereas benzene itself needs a nitrating mixture of concentrated nitric acid and concentrated sulfuric acid.