Asked by: Nabor Hudecek
science chemistry

Why is benzene iodination difficult?

Last Updated: 15th June, 2021

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Why is Iodination of Benzene Difficult? For satisfying this condition, electron donating groups attached to the phenyl ring making it more nucleophilic are preferred over unsubstituted Benzene. Also, the electrophilicity of the halogen is increased by using a Lewis acid catalyst thereby making it more reactive.

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Regarding this, why is ionization of benzene difficult?

why iodination of benzene difficult. Iodoarenes are also difficult to synthesise because the reaction is reversible and the HI produced is a strong reducing agent to reduce iodobenzene back to benzene.

Likewise, why is hno3 added to iodination of benzene? hno3 is added during iodination of benzene. Iodination of benzene is done in presence of acidic oxidising agent such as nitric acid. HNO3 is a strong oxidising agent and hence it will help in the removal of electron from I2 to convert into I+ . HNO will get consumed in the reaction .

Also to know is, why direct iodination of benzene is not possible?

Direct iodination of benzene is not possible because the reaction is reversible and the HI so produced in the reaction is a very strong reducing agent which reduces iodobenzene back to benzene.

Why direct iodination is not possible?

Iodoarenes are also difficult to synthesise because the reaction is reversible and the HI produced is a strong reducing agent to reduce iodobenzene back to benzene.

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