Chapter 19, Problem 19.62SP

Interpretation Introduction

Interpretation: Pyridine do not give good yield when undergoes electrophilic aromatic substitution, whereas pyridine N-oxide undergoes electrophilic aromatic substitution to give moderate yield is to be stated.

Concept introduction: The electrophilic aromatic substitution reaction involves addition of electrophile (electron deficient species) on aromatic ring. These reactions occur in the presence of Lewis acid catalysts like ${\text{AlCl}}_{\text{3}}$.

To determine: Pyridine do not give good yield when undergoes electrophilic aromatic substitution, whereas pyridine N-oxide undergoes electrophilic aromatic substitution to give moderate yield.