Question

The two${\mathbf{\text{C}}}_{\mathbf{\alpha }}\mathbf{\text{H}}$atoms of Gly are said to be prochiral, because when one of them is replaced by another group,${\mathbf{\text{C}}}_{\mathbf{\alpha }}$ becomes chiral. Draw a Fischer projection of Gly and indicate which H must be replaced with${\mathbf{\text{CH}}}_{\mathbf{3}}$to yield D-Ala.

Short answer

Diagram for given condition is:

Step-by-step solution

Definition of  PI

The pH value at which a molecule has no electrical charge is known as the isoelectric point

Step 2:Draw a Fischer projection of Gly

The Gly can generate ala.

For Gly to generate ala, the boxed H (hydrogen molecule) must be substituted by ${\text{CH}}_3$molecule.

Therefore, the diagram is: