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Aryl chloridesand bromides can be easily...

Aryl chloridesand bromides can be easily prepared by electrophilic substitution of arenes with chlorine and bromine respectively in the presence of Lewis acid catalysts. But why does preparation of aryl iodides requires presence of an oxidizing agent ?

Text Solution

Verified by Experts

Iodination reactions are reversible in nature. To carry out the reaction in the forward direction, the HI formed during the reaction is removed by oxidizing agent such as `HIO_(3)`.
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Knowledge Check

  • Assertion (A) : Aryl iodides cab be prepared by reaction of arenes with iodine in the presence of an oxidising agent. Reason (R ) : Oxidising agent oxidises I_(2) into HI.

    A
    Assertion and reason both are correct and reason is correct explanation of assertion.
    B
    Assertion and reason both are wrong statements.
    C
    Assertion is correct but reason is wrong statement.
    D
    Assertion is wrong but reason is correct statement.
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