Chapter 28, Problem 27P

Interpretation Introduction

Interpretation:

The conversion of. reactant to product by two steps should be shown.

Concept introduction:

In a sigmatropic reaction “ one new sigma-bond is formed as another breaks.”

Sigmatropic rearrangement reactions are designated with digits. For example a [1, 3] sigmatropic rearrangement describe a reaction in which the residue migrates from position 1 to position 3

[3,3] sigmatropic rearrangement of a 1,3-diene known as Cope rearrangement reaction.