EBK ORGANIC CHEMISTRY: PRINCIPLES AND M
EBK ORGANIC CHEMISTRY: PRINCIPLES AND M
2nd Edition
ISBN: 9780393630817
Author: KARTY
Publisher: W.W.NORTON+CO. (CC)
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Chapter 21, Problem 21.28P
Interpretation Introduction

Interpretation:

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

Concept introduction:

The intramolecular Claisen condensation of the diester, on treatment with a strong base, leads to form the β-keto ester. This is known as the Dieckmann condensation reaction. the α carbon of the carbonyl compound has an acidic proton, which can be easily abstracted by the strong base. The carbanion is formed, which is resonance stabilized with corresponding more stable enolate form. This enolate adds the second carbonyl carbon of the diester, and simultaneously, the alkoxide group (RO-) is eliminated to form the β-keto ester as the product. So the Dieckmann condensation involves intramolecular nucleophilic addition-elimination reaction. In most of the cyclization reaction, Dieckmann condensation occurs. Dieckmann condensation does not occur when the ring size is less than five-member or more than eight members due to angle strain. The proton of α carbon of the ketones and aldehydes is more acidic than that of ester.

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Chapter 21 Solutions

EBK ORGANIC CHEMISTRY: PRINCIPLES AND M

Ch. 21 - Prob. 21.11PCh. 21 - Prob. 21.12PCh. 21 - Prob. 21.13PCh. 21 - Prob. 21.14PCh. 21 - Prob. 21.15PCh. 21 - Prob. 21.16PCh. 21 - Prob. 21.17PCh. 21 - Prob. 21.18PCh. 21 - Prob. 21.19PCh. 21 - Prob. 21.20PCh. 21 - Prob. 21.21PCh. 21 - Prob. 21.22PCh. 21 - Prob. 21.23PCh. 21 - Prob. 21.24PCh. 21 - Prob. 21.25PCh. 21 - Prob. 21.26PCh. 21 - Prob. 21.27PCh. 21 - Prob. 21.28PCh. 21 - Prob. 21.29PCh. 21 - Prob. 21.30PCh. 21 - Prob. 21.31PCh. 21 - Prob. 21.32PCh. 21 - Prob. 21.33PCh. 21 - Prob. 21.34PCh. 21 - Prob. 21.35PCh. 21 - Prob. 21.36PCh. 21 - Prob. 21.37PCh. 21 - Prob. 21.38PCh. 21 - Prob. 21.39PCh. 21 - Prob. 21.40PCh. 21 - Prob. 21.41PCh. 21 - Prob. 21.42PCh. 21 - Prob. 21.43PCh. 21 - Prob. 21.44PCh. 21 - Prob. 21.45PCh. 21 - Prob. 21.46PCh. 21 - Prob. 21.47PCh. 21 - Prob. 21.48PCh. 21 - Prob. 21.49PCh. 21 - Prob. 21.50PCh. 21 - Prob. 21.51PCh. 21 - Prob. 21.52PCh. 21 - Prob. 21.53PCh. 21 - Prob. 21.54PCh. 21 - Prob. 21.55PCh. 21 - Prob. 21.56PCh. 21 - Prob. 21.57PCh. 21 - Prob. 21.58PCh. 21 - Prob. 21.59PCh. 21 - Prob. 21.60PCh. 21 - Prob. 21.61PCh. 21 - Prob. 21.62PCh. 21 - Prob. 21.63PCh. 21 - Prob. 21.64PCh. 21 - Prob. 21.65PCh. 21 - Prob. 21.66PCh. 21 - Prob. 21.67PCh. 21 - Prob. 21.68PCh. 21 - Prob. 21.69PCh. 21 - Prob. 21.70PCh. 21 - Prob. 21.71PCh. 21 - Prob. 21.72PCh. 21 - Prob. 21.73PCh. 21 - Prob. 21.74PCh. 21 - Prob. 21.75PCh. 21 - Prob. 21.76PCh. 21 - Prob. 21.77PCh. 21 - Prob. 21.78PCh. 21 - Prob. 21.79PCh. 21 - Prob. 21.80PCh. 21 - Prob. 21.81PCh. 21 - Prob. 21.82PCh. 21 - Prob. 21.83PCh. 21 - Prob. 21.84PCh. 21 - Prob. 21.85PCh. 21 - Prob. 21.86PCh. 21 - Prob. 21.87PCh. 21 - Prob. 21.88PCh. 21 - Prob. 21.89PCh. 21 - Prob. 21.90PCh. 21 - Prob. 21.91PCh. 21 - Prob. 21.92PCh. 21 - Prob. 21.93PCh. 21 - Prob. 21.94PCh. 21 - Prob. 21.95PCh. 21 - Prob. 21.96PCh. 21 - Prob. 21.97PCh. 21 - Prob. 21.98PCh. 21 - Prob. 21.1YTCh. 21 - Prob. 21.2YTCh. 21 - Prob. 21.3YTCh. 21 - Prob. 21.4YTCh. 21 - Prob. 21.5YTCh. 21 - Prob. 21.6YTCh. 21 - Prob. 21.7YTCh. 21 - Prob. 21.8YTCh. 21 - Prob. 21.9YTCh. 21 - Prob. 21.10YTCh. 21 - Prob. 21.11YTCh. 21 - Prob. 21.12YT
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