A plausible mechanism for the formation of the product with the stereochemical outcome has to be provided. Concept Introduction : Diels-Alder reaction is a [4+2]-cycloaddition of a conjugated diene and a dienophile (an alkene or alkyne ), an electrocyclic reaction that involves the 4 π-electrons of the diene and 2 π-electrons of the dienophile. The driving force of the reaction is the formation of new σ-bonds, which are energetically more stable than the π-bonds. Typically, Diels-Alder reaction works best when either the diene is substituted with electron-donating groups (like -OR, -NR 2 , etc) or when the dienophile is substituted with electron-withdrawing groups (like -NO 2 , -CN, -COR, etc). To find: Provide a plausible mechanism for the formation of the product with the stereochemical outcome Do Diels-Alder reaction

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Chapter 22, Problem 99CP

Interpretation Introduction

Interpretation: A plausible mechanism for the formation of the product with the stereochemical outcome has to be provided.

Concept Introduction:

Diels-Alder reaction is a [4+2]-cycloaddition of a conjugated diene and a dienophile (an alkene or alkyne), an electrocyclic reaction that involves the 4 π-electrons of the diene and 2 π-electrons of the dienophile. The driving force of the reaction is the formation of new σ-bonds, which are energetically more stable than the π-bonds. Typically, Diels-Alder reaction works best when either the diene is substituted with electron-donating groups (like -OR, -NR₂, etc) or when the dienophile is substituted with electron-withdrawing groups (like -NO₂, -CN, -COR, etc).

To find: Provide a plausible mechanism for the formation of the product with the stereochemical outcome

Do Diels-Alder reaction

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