Chapter 24, Problem 24.49AP

Interpretation Introduction

Interpretation:

The compounds $A$, $B$, $C$, $D$, and $E$ are to be identified.

Concept introduction:

Killani Fischer synthesis is the three step process. In the first step, an aldose is converted into two cyanohydrins with an increased asymmetric carbon in the carbon chain by reacting with $\text{HCN}$. In the second step, the cyanohydrins are further hydrolyzed to form aldonic acids. In the third step, the aldonic acids are finally reduced to yield two diastereomeric aldoses. The overall use of Killani Fischer synthesis is to synthesize two diastereomeric aldoses with an increased asymmetric carbon from an aldose.