Question

The correct order of increasing reactivity of C - X bond towards nucleophile in the following compounds is
$ \underset{(\text{III})}{\mathop{{{(C{{H}_{3}})}_{3}}C-X}}\, $ $ \underset{(\text{IV})}{\mathop{{{(C{{H}_{3}})}_{3}}CH-X}}\, $

• A. $ I
• B. $ III
• C. $ I
• D. $ III

Answer 1

Answer: (A)

AlkyI halides are more reactive than aryl halides. Among alkyl halides, $ 3{}^\circ $ alkyl halides (III) are more reactive than $ 2{}^\circ $ alkyl halides. (IV) Among aryl halides, aryl halides having electron with dwawing $ -N{{O}_{2}} $ groups at $ o- $ and $ p- $ positions (i.e. II) are more reactive than simple aryl halides (I) thus, the overall reactivity increases in the order. $ I