Chapter 19, Problem 19.53AP

Interpretation Introduction

(a)

Interpretation:

The mechanism of the given compound which decomposes to acetophenone and $\text{HBr}$ is to be stated.

Concept introduction:

The nucleophilic substitution reactions are of two types which are ${\text{S}}_{\text{N}}\text{1}$ and ${\text{S}}_{\text{N}}\text{2}$. The ${\text{S}}_{\text{N}}\text{2}$ reaction is a nucleophilic substitution bimolecular single-step reaction in which the addition of nucleophile and removal of leaving group takes place simultaneously. The ${\text{S}}_{\text{N}}\text{1}$ reaction is a nucleophilic substitution reaction in which the substitution of nucleophile takes place. This reaction takes place in two steps. This generates a carbocation intermediate in the reaction.

Interpretation Introduction

(b)

Interpretation:

The given reaction is to be completed with the help of part (a).

Concept introduction:

A glycol is defined as the molecule that contains two hydroxyl groups attached to different carbons. Generally, they are obtained from the oxidation reaction of alkenes. The ${\text{S}}_{\text{N}}\text{1}$ reaction is a nucleophilic substitution reaction in which the substitution of nucleophile takes place. This reaction takes place in two steps. This generates a carbocation intermediate in the reaction.