What happens when phenol is treated with zinc dust

Asked by admin @ 17/08/2021 in Chemistry viewed by 266 People

What happens when phenol is treated with zinc dust ?

Answered by admin @ 17/08/2021

When phenol is heated with zn dust reduction of phenol occurs and it gets converted into Benzene with ZnO as a by-product.

Here's the reaction:

Phenol+Zn⟶Benzene+ZnO

And here's the detailed mechanism;

Zn shows an oxidation state of +2.

The phenol gets converted into phenoxide ion and proton thus released accepts an electron from Zn forming H radical.

Also because of the heating there is homolytic fission of C of phenyl ring and O-

The O- thus formed accepts an electron from Zn and forms oxide ion.

In this way zinc forms zinc oxide and phenyl radical thus produced forms a bond with H radical.

However, the yield of this reaction used for benzene formation is lower.

What happens when phenol is treated with zinc dust

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