KCET · Chemistry · Aldehydes and Ketones
Toluene reacts with halogen in presence of iron (III) chloride giving ortho and para halo
compounds. The reaction is
- A Electrophilic elimination reaction
- B Electrophilic substitution reaction
- C Free radical addition reaction
- D Nucleophilic substitution reaction
Answer & Solution
Correct Answer
(B) Electrophilic substitution reaction
Step-by-step Solution
Detailed explanation
The reaction involved is
In presence of \( \mathrm{FeCl}_{3} \) and in dark, electrophilic substitution on benzene ring by \( \mathrm{Cl}^{+} \)at \( \mathrm{o}^{-} \)and p- positions occurs to
give o- and p-chlorotoluene. Since, methyl group activates the ring at o- and p- positions more than \( m \) - positions the
electrophilic substitution occurs at o- and p- positions to greater extent.
In presence of \( \mathrm{FeCl}_{3} \) and in dark, electrophilic substitution on benzene ring by \( \mathrm{Cl}^{+} \)at \( \mathrm{o}^{-} \)and p- positions occurs to
give o- and p-chlorotoluene. Since, methyl group activates the ring at o- and p- positions more than \( m \) - positions the
electrophilic substitution occurs at o- and p- positions to greater extent.
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