# What is the expected order of reactivity of the following compounds in electrophilic chlorination (Cl2 + FeCl3)?  (more reactive > less reactive) A) I > II > III > IV B) IV > III > II > I C) III > I > IV > II D) II > III > I > IV

Dear Student,

The directing power of the group is,

$\left(C{H}_{3}{\right)}_{3}N>N{O}_{2}>CN>S{O}_{3}H>CHO>COC{H}_{3}>COOH$

Hence the increasing order is II > III > I > IV

Option (D)

Regards.

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