Haloalkanes and Haloarenes - Result Question 8

####8. Which one is a nucleophilic substitution reaction among the following?

[2011]

(a)

(b) RCHO+R′MgX⟶OH

(c)CCC(C)CBr

(d) CH3CHO+HCN⟶CH3CH(OH)CN

Show Answer

Solution:

  1. (c) Nucleophilic substitution reactions are the most common reactions of alkyl halides.

Because of high electronegativities of the halogen atom, the carbon halogen (C−X) is highly polarised covalent bond. Thus, the carbon atom of the C−X bond becomes a good site for attack by nucleophiles (electron rich species).

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