EBK ORGANIC CHEMISTRY
6th Edition
ISBN: 8220103151757
Author: LOUDON
Publisher: MAC HIGHER
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Chapter 28, Problem 28.26P
Interpretation Introduction
Interpretation:
When previtamin D2 is heated, two compounds, A and B, are obtained that are stereoisomers of both ergosterol and lumisterol. Structures for these compounds, and their formation is to be explained.
Concept introduction:
Generally, electrocyclic reactions are a pericyclic reaction which occur intramolecularly. These reactions will result in the formation of ring compounds under the influence of heat or light. Notably, in this process one new sigma bond is formed and one old π-bond is consumed. Intriguingly, the reverse ring opening electrocyclic reaction can also be possible to occur under the same reaction mechanism but in reverse manner. In-phase orbital overlap results in symmetry allowed electrocyclic reactions.
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Chapter 28 Solutions
EBK ORGANIC CHEMISTRY
Ch. 28 - Prob. 28.1PCh. 28 - Prob. 28.2PCh. 28 - Prob. 28.3PCh. 28 - Prob. 28.4PCh. 28 - Prob. 28.5PCh. 28 - Prob. 28.6PCh. 28 - Prob. 28.7PCh. 28 - Prob. 28.8PCh. 28 - Prob. 28.9PCh. 28 - Prob. 28.10P
Ch. 28 - Prob. 28.11PCh. 28 - Prob. 28.12PCh. 28 - Prob. 28.13PCh. 28 - Prob. 28.14PCh. 28 - Prob. 28.15PCh. 28 - Prob. 28.16PCh. 28 - Prob. 28.17PCh. 28 - Prob. 28.18PCh. 28 - Prob. 28.19PCh. 28 - Prob. 28.20PCh. 28 - Prob. 28.21PCh. 28 - Prob. 28.22PCh. 28 - Prob. 28.23PCh. 28 - Prob. 28.24PCh. 28 - Prob. 28.25PCh. 28 - Prob. 28.26PCh. 28 - Prob. 28.27PCh. 28 - Prob. 28.28PCh. 28 - Prob. 28.29APCh. 28 - Prob. 28.30APCh. 28 - Prob. 28.31APCh. 28 - Prob. 28.32APCh. 28 - Prob. 28.33APCh. 28 - Prob. 28.34APCh. 28 - Prob. 28.35APCh. 28 - Prob. 28.36APCh. 28 - Prob. 28.37APCh. 28 - Prob. 28.38APCh. 28 - Prob. 28.39APCh. 28 - Prob. 28.40APCh. 28 - Prob. 28.41APCh. 28 - Prob. 28.42APCh. 28 - Prob. 28.43APCh. 28 - Prob. 28.44APCh. 28 - Prob. 28.45APCh. 28 - Prob. 28.46APCh. 28 - Prob. 28.47APCh. 28 - Prob. 28.48APCh. 28 - Prob. 28.49APCh. 28 - Prob. 28.50APCh. 28 - Prob. 28.51APCh. 28 - Prob. 28.52APCh. 28 - Prob. 28.53APCh. 28 - Prob. 28.54APCh. 28 - Prob. 28.55AP
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