Chapter 16.20, Problem 49P

(a)

Interpretation Introduction

Interpretation:

To propose a mechanism for the reaction of acetic anhydride with water and alcohol.

Concept introduction:

The reaction of acetic anhydride with water is a nucleophilic substitution reaction. The nucleophile from the reagent attacks the carbonyl carbon in acetic anhydride to form a tetrahedral intermediate. The carboxylate ion leaves the intermediate leading to the collapse of the tetrahedral intermediate to form the corresponding product.

(b)

Interpretation Introduction

Interpretation:

To propose a mechanism for the reaction of acetic anhydride with water and alcohol.

Concept introduction:

The reaction of acetic anhydride with water is a nucleophilic substitution reaction. The nucleophile from the reagent attacks the carbonyl carbon in acetic anhydride to form a tetrahedral intermediate. The carboxylate ion leaves the intermediate leading to the collapse of the tetrahedral intermediate to form the corresponding product.