Question

What is Peroxide Effect?

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Answer 1

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The anti-Markonikov’s addition in presence of peroxide is known as Peroxide Effect or Kharasch Effect.

⚫The reaction of HBr with an alkene in presence of peroxide, results in the formation of bromoalkane where addition of HBr occurs anti to Markonikov’s rule.

⚫For example, reaction of HBr with propene gives 1-Bromopropane, an anti-Markonikov’s product,in presence of peroxides...

Answer 2

Peroxide effect:

$\bullet$ Peroxide effect is also known as Anti Markovnikov Addition (AMA).

Now:

$\bullet$ The -ve part of the adendum gets attached to the carbon atom.

$\bullet$ That is in the electrophilic addition reaction, of the unsaturated hydrocarbons.

$\bullet$ Carbon atoms contains more number of hydrogen atom.

This occurs in the presence of:

$\implies$ Free radical initiators

Such as: Benzoyl peroxide

This is also called as Anti Markovnikov Rule.

We know that:

$\bullet$ Anti Markovnikov Rule is also known as Peroxide effect.

Because:

$\bullet$ In the presence of peroxide only this reaction occurs.