Chapter 16, Problem 16.49AP

Interpretation Introduction

Interpretation:

The structures of $A$, $B$, $C$, and $D$ are to be predicted.

Concept introduction:

The addition of ${\text{H}}_{\text{2}}$ in presence of a catalyst is known as catalytic hydrogenation reaction. This is a syn addition. The alkene is reduced to an 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.

Alcohol in the presence of acid undergoes elimination reaction to produce alkene.