Chapter 22, Problem 22.25P

Interpretation Introduction

Interpretation:

Which of the three isomers of trimethylbenzene will produce exclusively one monobrominated product when treated with ${\text{Br}}_{\text{2}}$ and ${\text{FeBr}}_3$ is to be determined.

Concept introduction:

Benzene and substituted benzene undergo electrophilic aromatic substitution reactions, in which one or more of the ring hydrogen atoms are substituted with an electron-poor atom or group.

In the case of substituted benzene compounds, a mixture of products is obtained. The number of products depends on the number of structurally different hydrogen atoms present on the benzene ring.