Organic Chemistry: Principles And Mechanisms (second Edition)
Organic Chemistry: Principles And Mechanisms (second Edition)
2nd Edition
ISBN: 9780393630749
Author: KARTY, Joel
Publisher: W. W. Norton & Company
Question
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Chapter 20, Problem 20.4P
Interpretation Introduction

(a)

Interpretation:

The complete and detailed mechanism for the given reaction is to be drawn, and the overall product of the reaction is to be predicted.

Concept introduction:

This is saponifiaction reaction. A carboxylic acid is produced when an ester undergoes saponification, followed by acid workup. Steps 1 and 2 are identical to the nucleophilic addition and elimination steps. Step 3 is the rapid, irreversible deprotonation of the newly formed carboxylic acid. Finally, the proton is replenished by adding a strong acid.

The irreversible deprotonation in Step 3 makes the overall saponification reaction irreversible. The initial carboxylic acid is produced reversibly, but it is continually removed via Step 3, which helps drive the reaction to completion.

Interpretation Introduction

(b)

Interpretation:

The complete and detailed mechanism for the given reaction is to be drawn, and the overall product of the reaction is to be predicted.

Concept introduction:

This is saponifiaction reaction. A carboxylic acid is produced when an ester undergoes saponification, followed by acid workup. Steps 1 and 2 are identical to the nucleophilic addition and elimination steps. Step 3 is the rapid, irreversible deprotonation of the newly formed carboxylic acid. Finally, the proton is replenished by adding a strong acid.

The irreversible deprotonation in Step 3 makes the overall saponification reaction irreversible. The initial carboxylic acid is produced reversibly, but it is continually removed via Step 3, which helps drive the reaction to completion.

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Chapter 20 Solutions

Organic Chemistry: Principles And Mechanisms (second Edition)

Ch. 20 - Prob. 20.11PCh. 20 - Prob. 20.12PCh. 20 - Prob. 20.13PCh. 20 - Prob. 20.14PCh. 20 - Prob. 20.15PCh. 20 - Prob. 20.16PCh. 20 - Prob. 20.17PCh. 20 - Prob. 20.18PCh. 20 - Prob. 20.19PCh. 20 - Prob. 20.20PCh. 20 - Prob. 20.21PCh. 20 - Prob. 20.22PCh. 20 - Prob. 20.23PCh. 20 - Prob. 20.24PCh. 20 - Prob. 20.25PCh. 20 - Prob. 20.26PCh. 20 - Prob. 20.27PCh. 20 - Prob. 20.28PCh. 20 - Prob. 20.29PCh. 20 - Prob. 20.30PCh. 20 - Prob. 20.31PCh. 20 - Prob. 20.32PCh. 20 - Prob. 20.33PCh. 20 - Prob. 20.34PCh. 20 - Prob. 20.35PCh. 20 - Prob. 20.36PCh. 20 - Prob. 20.37PCh. 20 - Prob. 20.38PCh. 20 - Prob. 20.39PCh. 20 - Prob. 20.40PCh. 20 - Prob. 20.41PCh. 20 - Prob. 20.42PCh. 20 - Prob. 20.43PCh. 20 - Prob. 20.44PCh. 20 - Prob. 20.45PCh. 20 - Prob. 20.46PCh. 20 - Prob. 20.47PCh. 20 - Prob. 20.48PCh. 20 - Prob. 20.49PCh. 20 - Prob. 20.50PCh. 20 - Prob. 20.51PCh. 20 - Prob. 20.52PCh. 20 - Prob. 20.53PCh. 20 - Prob. 20.54PCh. 20 - Prob. 20.55PCh. 20 - Prob. 20.56PCh. 20 - Prob. 20.57PCh. 20 - Prob. 20.58PCh. 20 - Prob. 20.59PCh. 20 - Prob. 20.60PCh. 20 - Prob. 20.61PCh. 20 - Prob. 20.62PCh. 20 - Prob. 20.63PCh. 20 - Prob. 20.64PCh. 20 - Prob. 20.65PCh. 20 - Prob. 20.66PCh. 20 - Prob. 20.67PCh. 20 - Prob. 20.68PCh. 20 - Prob. 20.69PCh. 20 - Prob. 20.70PCh. 20 - Prob. 20.71PCh. 20 - Prob. 20.1YTCh. 20 - Prob. 20.2YTCh. 20 - Prob. 20.3YTCh. 20 - Prob. 20.4YTCh. 20 - Prob. 20.5YTCh. 20 - Prob. 20.6YTCh. 20 - Prob. 20.7YTCh. 20 - Prob. 20.8YTCh. 20 - Prob. 20.9YTCh. 20 - Prob. 20.10YTCh. 20 - Prob. 20.11YTCh. 20 - Prob. 20.12YTCh. 20 - Prob. 20.13YT
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