Chapter 9, Problem 9.70P

Interpretation Introduction

Interpretation: The intermediate formed in Reaction $\left[1\right]$ is to be stated and the mechanism for Reaction $\left[2\right]$ is to be drawn.

Concept introduction: Alcohols contain poor leaving groups $\left(-\text{OH}\right)$. Therefore, they do not undergo substitution reaction until they get converted into good leaving groups. They are converted into good leaving groups, (like sulfones) by the treatment of ${\text{CH}}_{\text{3}}{\text{SO}}_{\text{2}}\text{Cl}$ in the presence of pyridine.