KCET2017ChemistryAldehydes and Ketones
Toluene reacts with halogen in presence of iron (III) chloride giving ortho and para halo compounds. The reaction is
Options
- AElectrophilic elimination reaction
- BElectrophilic substitution reaction
- CFree radical addition reaction
- DNucleophilic substitution reaction
Correct answer
B. Electrophilic substitution reaction
Step-by-step solution
The reaction involved is In presence of ( FeCl ₃ ) and in dark, electrophilic substitution on benzene ring by ( Cl ⁺ )at ( 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.