Chapter 7, Problem 39SA

Summary Introduction

To review:

Pure α-d-glucopyranose has a specific rotation of +19^o ;whereasthat of β-d-glucopyranose is +112^o. The specific rotation of the equilibrium mixture of α-d-glucopyranose and β-d-glucopyranose produced during mutarotation is +53^o. Als, ohe composition of the equilibrium mixture is to be reviewed.

Introduction:

The six-membered hemiacetal ring of glucose is called glucopyranose. When a monosaccharide unit is dissolved in water, it forms α and β anomers. In the case of glucose, it forms α-d-glucopyranose and β-d-glucopyranose.