Chapter 17, Problem 17.8P

Interpretation Introduction

(a)

Interpretation:

The product obtained from the reaction of $\text{4-bromocyclohexene}$ with potassium tert-butoxide is to be stated.

Concept introduction:

The first step of ${\text{S}}_{\text{N}}\text{1}$ and $\text{E1}$ reactions is the heterolysis of carbon halogen bond to form a carbocation. In ${\text{S}}_{\text{N}}\text{1}$ pathway, the next step is substitution while in $\text{E1}$ pathway, the next step is elimination. According to Zaitsev rule, in $\text{E1}$ reactions, the more substituted or more alkylated alkene is the major product as it is more stable.

Interpretation Introduction

(b)

Interpretation:

The product obtained from the reaction of $\left(\text{2-iodo-1-methoxyethyl}\right)\text{benzene}$ with potassium tert-butoxide is to be stated.

Concept introduction:

The first step of ${\text{S}}_{\text{N}}\text{1}$ and $\text{E1}$ reactions is the heterolysis of carbon halogen bond to form a carbocation. In ${\text{S}}_{\text{N}}\text{1}$ pathway, the next step is substitution while in $\text{E1}$ pathway, the next step is elimination. According to Zaitsev rule, in $\text{E1}$ reactions, the more substituted or more alkylated alkene is the major product as it is more stable.