ORGANIC CHEMISTRY
ORGANIC CHEMISTRY
6th Edition
ISBN: 9781266633973
Author: SMITH
Publisher: MCG
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Chapter 25.3, Problem 9P
Interpretation Introduction

(a)

Interpretation: The products formed when each triene undergoes electrocyclic reaction under [1] thermal conditions; [2] photochemical conditions are to be drawn.

Concept introduction: Electrocyclic reactions involve the conversion of σ bonds into π bonds or π bonds into σ bonds. These reactions can take place in photochemical and as well as thermal conditions. The photochemical and thermal reactions take place in the presence of light and heat respectively.

Curved arrows aid in determining the movement and flow of electrons in the reaction. The electrons that take part in the chemical reactions are shown by the curved arrows.

Interpretation Introduction

(b)

Interpretation: The products formed when each triene undergoes electrocyclic reaction under [1] thermal conditions; [2] photochemical conditions are to be identified.

Concept introduction: Electrocyclic reactions involve the conversion of σ bonds into π bonds or π bonds into σ bonds. These reactions can take place in photochemical and as well as thermal conditions. The photochemical and thermal reactions take place in the presence of light and heat respectively.

Curved arrows aid in determining the movement and flow of electrons in the reaction. The electrons that take part in the chemical reactions are shown by the curved arrows.

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