Interpretation The structure for the derivative of divinylcyclopropane including its stereochemistry is to be deduced. Concept introduction: > Reactions of dienes that proceed in a single step by way of cyclic transition state are called pericyclic reactions. > Compounds having 1,5-diene unit undergo an intramolecular reaction that converts it into a different 1,5-diene unit. This is known as Cope rearrangement. > Cope rearrangement is a type of pericyclic reaction in which one 1,5-diene unit is converted to another through a cyclic transition state. > The reactant molecule must have two isolated double bonds at C-1 and C-5 carbon atoms. > The reaction must pass through a cyclic transition state to produce two cis double bonds in the ring. > The product of the Cope rearrangement has double bonds at C-1 and C-4 carbon atoms.

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Chapter 11.16, Problem 24P

Interpretation Introduction

Interpretation

The structure for the derivative of divinylcyclopropane including its stereochemistry is to be deduced.

Concept introduction:
>
Reactions of dienes that proceed in a single step by way of cyclic transition state are called pericyclic reactions.
>
Compounds having 1,5-diene unit undergo an intramolecular reaction that converts it into a different 1,5-diene unit. This is known as Cope rearrangement.
>
Cope rearrangement is a type of pericyclic reaction in which one 1,5-diene unit is converted to another through a cyclic transition state.
>
The reactant molecule must have two isolated double bonds at C-1 and C-5 carbon atoms.
>
The reaction must pass through a cyclic transition state to produce two cis double bonds in the ring.
>
The product of the Cope rearrangement has double bonds at C-1 and C-4 carbon atoms.

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