Chapter 25, Problem 56QP

Interpretation Introduction

Interpretation:

The mechanisms involved in given electrophilic aromatic substitution reaction and electrophilic addition reaction are to be represented and the curved arrows are to be shown.

Concept introduction:

All organic reactions in which an atom linked to an aromatic system is displaced by an electrophile, are known as electrophilic aromatic substitution reactions.

The compounds that have the tendency to attract electron rich centers are known as electrophiles. They are either positively charged species or neutral species. Lewis acids are electrophiles.

Electrophilic addition involves reaction between an electrophile and a nucleophile in which two new sigma bonds are formed bybreaking of a $\text{π}$ bond.