Organic Chemistry
Organic Chemistry
4th Edition
ISBN: 9780073402772
Author: Janice G. Smith
Publisher: MCG
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Chapter 27, Problem 27.31P
Interpretation Introduction

(a)

Interpretation: The cyclic product formed on photochemical electrocyclic ring closure of given decatetraene is to be determined.

Concept introduction: Electrocyclic reactions involve ring opening or ring closure in a conjugated polyene. According to Woodward-Hoffmann rules, the acyclic polyene containing even number of bonds in photochemical conditions undergoes reaction in disrotatory fashion and acyclic polyene containing odd number of bonds undergo reaction in conrotatory fashion.

Interpretation Introduction

(b)

Interpretation: The cyclic product formed on photochemical electrocyclic ring closure of given decatetraene is to be determined.

Concept introduction: Electrocyclic reactions involve ring opening or ring closure in a conjugated polyene. According to Woodward-Hoffmann rules, the acyclic polyene containing even number of bonds in photochemical conditions undergoes reaction in disrotatory fashion and acyclic polyene containing odd number of bonds undergo reaction in conrotatory fashion.

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Chapter 27 Solutions

Organic Chemistry

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