Chapter 6, Problem 6.42P

(a)

Interpretation Introduction

Interpretation:

The number and kind of stereoisomers formed when given molecule is treated in presence of $\text{Hg}{\left(\text{OAc}\right)}_{\text{2}}\text{,}{\text{H}}_{\text{2}}\text{O}\text{followed}\text{by}{\text{NaBH}}_{\text{4}}$ has to be identified. For given enantiomerically pure and optically active compound the formed product should be identified that it is optically active or inactive.

Concept Introduction:

Geometric isomers: Two atoms with the same side location of the double bond are called cis isomers and two atoms with opposite side locations of the double bond are called Trans isomers.

R and S nomenclature: it is used to assign the molecule using CIP (Cahn-Ingold-Prelog) rules.

The CIP rules are as follows:

Select the chiral carbon and assign the numbers according to the decreasing atomic mass of atoms attached to it.

If the numbering follows clockwise direction then the molecule is termed as R and if it follows anti-clockwise direction then molecule is termed as S.

(b)

Interpretation Introduction

Interpretation:

The number and kind of stereoisomers formed when given molecule is treated in presence of ${\text{H}}_{\text{2}}\text{/Pt}$ has to be identified. For given enantiomerically pure and optically active compound the formed product should be identified that it is optically active or inactive.

Concept Introduction:

Geometric isomers: Two atoms with the same side location of the double bond are called cis isomers and two atoms with opposite side locations of the double bond are called Trans isomers.

R and S nomenclature: it is used to assign the molecule using CIP (Cahn-Ingold-Prelog) rules.

The CIP rules are as follows:

Select the chiral carbon and assign the numbers according to the decreasing atomic mass of atoms attached to it.

If the numbering follows clockwise direction then the molecule is termed as R and if it follows anti-clockwise direction then molecule is termed as S.

(c)

Interpretation Introduction

Interpretation:

The number and kind of stereoisomers formed when given molecule is treated in presence of ${\text{BH}}_3$ followed by ${\text{H}}_{\text{2}}{\text{O}}_{\text{2}}\text{in}\text{NaOH}$ has to be identified. For given enantiomerically pure and optically active compound the formed product should be identified that it is optically active or inactive.

Concept Introduction:

Geometric isomers: Two atoms with the same side location of the double bond are called cis isomers and two atoms with opposite side locations of the double bond are called Trans isomers.

R and S nomenclature: it is used to assign the molecule using CIP (Cahn-Ingold-Prelog) rules.

The CIP rules are as follows:

Select the chiral carbon and assign the numbers according to the decreasing atomic mass of atoms attached to it.

If the numbering follows clockwise direction then the molecule is termed as R and if it follows anti-clockwise direction then molecule is termed as S.

(d)

Interpretation Introduction

Interpretation:

The number and kind of stereoisomers formed when given molecule is treated in presence of ${\text{Br}}_2$ in ${\text{CCl}}_{\text{4}}$ has to be identified. For given enantiomerically pure and optically active compound the formed product should be identified that it is optically active or inactive.

Concept Introduction:

Geometric isomers: Two atoms with the same side location of the double bond are called cis isomers and two atoms with opposite side locations of the double bond are called Trans isomers.

R and S nomenclature: it is used to assign the molecule using CIP (Cahn-Ingold-Prelog) rules.

The CIP rules are as follows:

Select the chiral carbon and assign the numbers according to the decreasing atomic mass of atoms attached to it.

If the numbering follows clockwise direction then the molecule is termed as R and if it follows anti-clockwise direction then molecule is termed as S.