Chapter 7, Problem 7.64SP

(a)

Interpretation Introduction

To determine: The mechanism of the formation of $\text{cyclohexylbromide}$.

Interpretation: The mechanism of the formation of $\text{cyclohexylbromide}$ is to be represented.

Concept introduction: The elimination reaction is the organic reaction in which two substituents are removed from the organic molecule in one step or two steps. The two mechanisms of the elimination reaction are E1 and E2 mechanism.

E1 mechanism is carried out with ${\text{S}}_{\text{N}}\text{1}$ reactions. It is a two-step process of elimination that consists of ionization and deprotonation. This mechanism takes place in tertiary alkyl halides and secondary alkyl halides.

The ${\text{S}}_{\text{N}}\text{1}$ reaction is the mechanism of nucleophilic substitution reaction that occurs in two steps. In ${\text{S}}_{\text{N}}\text{2}$ reaction, the nucleophile substitution reaction occurs in which one of the bonds is broken and simultaneously another bond is formed.

In ${\text{S}}_{\text{N}}\text{2}$ $\text{E2}$ elimination reaction, the incoming anion acts as a base not as a nucleophile and the removal of proton leads to the formation of alkenes.

(b)

Interpretation Introduction

To determine: The mechanism for the formation of the compound given in the reaction.

Interpretation: The mechanism of the given reaction is to be represented.

Concept introduction: In ${\text{S}}_{\text{N}}\text{2}$ reaction, the nucleophile substitution reaction occurs in which one of the bonds is broken and simultaneously another bond is formed.

In ${\text{S}}_{\text{N}}\text{2}$ $\text{E2}$ elimination reaction, the incoming anion acts as a base not as a nucleophile, removal of proton leads to the formation of alkenes.