Chapter 24, Problem 24.1P

Interpretation Introduction

(a)

Interpretation:

The Fischer projections for the given molecule are to be stated.

Concept introduction:

Fischer projections is a two dimensional representation of organic compounds. It was proposed to represent glucose molecules. The carbon chain is represented vertically; the hydoxy groups and hydrogen atoms are represented horizontally, according to their stereochemistry. The aldehyde group is paced at the top of the carbon chain and numbered $1$ and the ketone group is usually placed at the carbon $\text{-2}$.

Answer to Problem 24.1P

The Fischer projections for the given molecule are shown below.

Explanation of Solution

The structure of the given molecule is shown below.

Figure 1

In the Fischer projection, the compound, $\left(2R,3S,4S\right)\text{-2, 3, 4, 5-tetrahydroxypentanoic}\text{acid}$ is represented in two-dimension, the substituent on the carbon chain are placed in such a way that stereochemistry remains same. The groups are interchanged simultaneously such that the stereochemistry of carbon atoms in the second structure also remains same as shown below.

Figure 2

Conclusion

The Fischer projections of $\left(2R,3S,4S\right)\text{-2, 3, 4, 5-tetrahydroxypentanoic}\text{acid}$ are shown in Figure 2.

Interpretation Introduction

(b)

Interpretation:

The Fischer projections for $\left(S\right)\text{-2-butanol}$ are to be stated.

Concept introduction:

Fischer projections is a two dimensional representation of organic compounds. It was proposed to represent glucose molecules. The carbon chain is represented vertically; the hydoxy groups and hydrogen atoms are represented horizontally, according to their stereochemistry. The aldehyde group is paced at the top of the carbon chain and numbered $1$ and the ketone group is usually placed at the carbon $\text{-2}$.

Answer to Problem 24.1P

The Fischer projections for $\left(S\right)\text{-2-butanol}$ are shown below.

Explanation of Solution

The structure of $\left(S\right)\text{-2-butanol}$ is shown below.

Figure 3

In the Fischer projection, the compound, $\left(S\right)\text{-2-butanol}$ is represented in two-dimension, the substituent on the carbon chain are placed in such a way that stereochemistry remains same. The groups are interchanged simultaneously in a clockwise direction such that the stereochemistry of carbon atoms in the second structure also remains same as shown below.

Figure 4

Conclusion

The Fischer projections of $\left(S\right)\text{-2-butanol}$ are shown in Figure 4.