Chapter 17, Problem 17.73AP

Interpretation Introduction

Interpretation:

The reaction in which phosphoryl-group transfer from acetyl phosphate to ethanol to make a phosphate ester has to be drawn.

Concept introduction:

Phosphoric Acid: It is an inorganic acid having similarities with a carboxylic acid. There are three different acidic hydrogens which causes it to form three anions.

Phosphate Ester: Phosphate esters are prepared by the reaction of a phosphoric acid and an alcohol molecule with the elimination of water molecule. It has $-C-O-P-$ linkage.

• Alcohol can react with one $-OH$ group forming Phosphate monoester.
• Alcohol can react with two $-OH$ groups of phosphoric acid forming Phosphate diester.
• Alcohol can react with three $-OH$ groups of phosphoric acid forming Phosphate triester.

Phosphorylation: The reaction where phosphoryl group $\left(P{O}_3{}^{2-}\right)$ of a molecule is transferred to other is known as phosphorylation.

Acetyl phosphate is formed when acetic acid and phosphoric acid reacts where the $-C=O$ carbon and $P=O$ phosphorus atom are attached to a same oxygen atom