Chapter 20, Problem 20.43P

Interpretation Introduction

(a)

Interpretation:

The hemiacetal carbon and the −OH group in the hemiacetal carbon should be identified.

Concept introduction:

When an alcohol and ether group is attached to the same carbon, it is called the hemiacetal carbon.

Interpretation Introduction

(b)

Interpretation:

The 4 Hydroxyl groups should be classified as primary (1 $°),$ secondary (2 $°)$ & tertiary (3 $°)$ hydroxyls.

Concept introduction:

Depending on the number of Hydrogen atoms attached to the Carbon atom with hydroxyl group (-OH), they can be classified as primary (1 $°),$ secondary (2 $°)$ & tertiary (3$°)$ hydroxyls.