Chapter 12, Problem 12.6P

Interpretation Introduction

(a)

Interpretation: The stereoisomers formed when the given alkene is treated with ${\text{H}}_{\text{2}}$ are to be drawn.

Concept introduction: The addition of ${\text{H}}_{\text{2}}$ is known as hydrogenation reaction. This is a syn addition. Alkene is reduced to alkane. In this reaction, weak pi bond of alkene and sigma bond between ${\text{H}}_{\text{2}}$ is broken and two $\text{C}-\text{H}$ bonds are formed.

Interpretation Introduction

(b)

Interpretation: The stereoisomers formed when the given alkene is treated with ${\text{H}}_{\text{2}}$ are to be drawn.

Concept introduction: The addition of ${\text{H}}_{\text{2}}$ is known as hydrogenation reaction. This is a syn addition. Alkene is reduced to alkane. In this reaction, weak pi bond of alkene and sigma bond between ${\text{H}}_{\text{2}}$ is broken and two $\text{C}-\text{H}$ bonds are formed.

Interpretation Introduction

(c)

Interpretation: The stereoisomers formed when the given alkene is treated with ${\text{H}}_{\text{2}}$ are to be drawn.

Concept introduction: The addition of ${\text{H}}_{\text{2}}$ is known as hydrogenation reaction. This is a syn addition. Alkene is reduced to alkane. In this reaction, weak pi bond of alkene and sigma bond between ${\text{H}}_{\text{2}}$ is broken and two $\text{C}-\text{H}$ bonds are formed.