Chapter 8, Problem 8.47P

Interpretation Introduction

(a)

Interpretation: The three-dimensional representations for all the stereoisomers of $2$-chloro-$3$-methylpentane are to be drawn and the pairs of enantiomers are to be labeled.

Concept introduction: A carbon atom bonded to four different groups is known as a stereogenic centre. Enantiomers are compounds which are non-superimposable mirror images of each other.

Interpretation Introduction

(b)

Interpretation: The $\text{E2}$ products that results from each of the given alkyl halides by considering dehydrohalogenation across $\text{C2}$ and $\text{C3}$, are to be drawn.

Concept introduction: The $\text{E2}$ elimination reactions are favored by strong, negatively charged bases. The following order is obeyed for the reactivity of alkyl halides towards an $\text{E2}$ reaction,

$\text{tertiary}>\text{secondary}>\text{primary}$

Interpretation Introduction

(c)

Interpretation: The relationship between the products formed in part (b) is to be stated.

Concept introduction: Diastereomers are type of stereoisomers that differ in configuration at one or more stereocentres. They are non-superimposable or non mirror images of each other.