Question

The correct order of increasing the reactivity of C–X bond towards nucleophile in following compounds.

    (I)

     (II)

(CH₃)₃CCl
    (III)

(CH₃)₂CHCl
    (IV)

Options

• (IV) < (III) < (I) < (II)

• (I) < (II) < (IV) < (III)

• (III) < (II) < (I) < (IV)

• (II) < (III) < (I) < (IV)

Answer 1

(III) < (II) < (I) < (IV)

Explanation:

(III) is most reactive due to stability of 3° carbocation, −NO₂ (electron-withdrawing) group increase nucleophilic substitution reaction.