Chapter 20, Problem 20.34P

Interpretation Introduction

(a)

Interpretation:

The Fischer projection for the product formed by reaction of D-Galactose with sodium boronhydride, ${\text{NaBH}}_{\text{4}}$ in water should be determined.

Concept introduction:

An aldose can undergo reduction on reaction with sodiumboronhydride resulting formation of identical side chain, the compound so formed is known as alditol.

For example, the reduction of D-glucose is represented as follows:

Interpretation Introduction

(b)

Interpretation:

The Fischer projection for the product formed by reaction of D-Ribose with sodium boronhydride, ${\text{NaBH}}_{\text{4}}$ in water should be determined.

Concept introduction:

An aldose can undergo reduction on reaction with sodiumboronhydride resulting formation of identical side chain, the compound so formed is known as alditol.

For example, the reduction of D-glucose is represented as follows: