Chapter 27, Problem 69IAE

Interpretation Introduction

Interpretation:

The correct structures to the three isomeric tribromobenzene should be assigned.

Concept introduction:

The electrophilic aromatic substitution is the type of reaction in which an electrophile substitutes the hydrogen atom of the aromatic compound. Nitration is an example of such a reaction.

The nitration takes place in the presence of nitric acid and sulphuric acid. In this reaction, the protonation of nitric acid occurs in order to produce the nitronium ion.

The activating groups are the groups that have the ability to donate the electron density to the benzene ring. The deactivating groups are the groups that have the ability to withdraw the electron density to the benzene ring. The ortho and para directing groups are the activating groups while meta directing groups are deactivating groups.