Chapter 23, Problem 23.23P

Interpretation Introduction

Interpretation:

It is to be shown how methyl orange and acid red $\text{37}$ can be synthesized beginning with an arenediazonium ion.

Concept introduction:

The arenediazonium ion is electrophilic in nature due to the $\left({\text{N}}_{\text{2}}^{\text{+}}\right)$ group and can undergo electrophilic aromatic substitution reaction with another aromatic ring. Such type of reaction is called azo coupling reaction as the $\text{-N=N-}$ group joins the two aromatic rings. This $\text{-N=N-}$ group is called the azo group. The electron-donating groups on the aromatic ring activate the electrophilic substitution reaction.