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Explain the preparation of phenol from cumene.

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Solution

Preparation of phenol from cumene
To prepare phenol, cumene is first oxidised in the presence of air to cumene hydroperoxide.
Cumene(Isoprophyl benzene)O2Cumene hydroperoxide
Now, cumene hydroperoxide is treated with dilute acid to prepare phenol and acetone as by-products.
Cumene hydroperoxideH+−−−−−−323363KPhenol+Acetone
By this method, acetone is obtained in large quantities.

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