Chapter 21, Problem 21.1YT

Interpretation Introduction

Interpretation:

The appropriate curved arrows and the name of the elementary step below each reaction arrow for equation $\text{21}\text{.2}$ has to be determined.

Concept introduction:

An ester such as methyl benzoate can be produced from benzoyl chloride using methoxide anion (${\text{CH}}_{\text{3}}{\text{O}}^{\text{-}}$), a relatively strong nucleophile. The mechanism for this reaction is simply the two-step nucleophilic addition-elimination mechanism. An ester can also be produced from an acid chloride by treating the acid chloride with an alcohol, a relatively weak nucleophile. Similarly, treating an acid chloride with water (another relatively weak nucleophile) produces a carboxylic acid.