Question

Among the following, the reaction that proceeds through an electrophilic substitution is:

Answer 1

Hint: In a chemical reaction, the functional group attached to a compound is replaced by an electrophile, and then the reactions are known as electrophilic substitution reactions. The functional group which is replaced by a hydrogen atom is substituted in a chemical compound. Organic compounds involve two types of primary electrophilic substitution reactions which are electrophilic aromatic substitution and aliphatic substitution reactions.

Complete step by step answer:
Let us among given reactions, which one of the reactions belongs to electrophilic substitution reaction,

This reaction is a type of elimination reaction, which is classified as the two-step mechanism is known as E1 reaction and the one-step mechanism is known as E2 reaction.

This reaction is a type of substitution reaction which belongs to radical aromatic substitution reactions. In this chlorine radical forms with a homolytic fission of chlorine molecule under UV light and this radical initiates the reaction and hence the reaction becomes a radical aromatic substitution reaction.

This reaction is named as Friedel-crafts reaction which is a type of electrophilic substitution reaction.
The mechanism of this reaction as follows:

Hence, the reaction that proceeds through an electrophilic substitution.
The correct answer is option “C” .

Note: An atom that is attached to an aromatic ring is replaced with an electrophile in a reaction is an electrophilic aromatic substitution reaction. Aromatic nitration, aromatic sulfonation, and Friedel-Crafts reactions are examples of this type of reaction. The aromaticity of aromatic compounds plays an important role in electrophilic aromatic substitution reactions.