A direct iodination of benzene is not possible because

A direct iodination of benzene is not possible because
  1. iodine is an oxidizing agent
  2. resulting $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{I}$ is reduced to $\mathrm{C}_{6} \mathrm{H}_{6}$ by HI
  3. HI is unstable
  4. the ring gets deactivated

Solution

$\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{I}$ is reduced by $\mathrm{HI}$ to $\mathrm{C}_{6} \mathrm{H}_{6}$ .

Asked in: JEE-TOPICTESTS-CHEMISTRY

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