Organic Chemistry, Binder Ready Version
Organic Chemistry, Binder Ready Version
2nd Edition
ISBN: 9781118454312
Author: David R. Klein
Publisher: WILEY
Question
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Chapter 17, Problem 59PP

(a)

Interpretation Introduction

Interpretation:

For each of the given reactions, the product should be determined.

Concept introduction:

  • Sigmatropic rearrangement reaction is a pericyclic reaction of polyenes (π-system), in which one σ-bond is formed and another σ-bond is broken and remaining π-bonds are shifting their positions. Thereby the transition state is cyclic. The mechanism of rearrangement is represented by using curved arrows.
  • Cope Rearrangement is a [3,3] sigamatropic rearrangement, in which the π-system having 6 carbons and double bonds are situated at both ends.
  • Claisen Rearrangement is a [3,3] sigamatropic rearrangement of allylic vinylic/arylic ethers, in which the ethers will rearranged to carbonyl compound.

(b)

Interpretation Introduction

Interpretation:

For each of the given reactions, the product should be determined.

Concept introduction:

  • Sigmatropic rearrangement reaction is a pericyclic reaction of polyenes (π-system), in which one σ-bond is formed and another σ-bond is broken and remaining π-bonds are shifting their positions. Thereby the transition state is cyclic. The mechanism of rearrangement is represented by using curved arrows.
  • Cope Rearrangement is a [3,3] sigamatropic rearrangement, in which the π-system having 6 carbons and double bonds are situated at both ends.
  • Claisen Rearrangement is a [3,3] sigamatropic rearrangement of allylic vinylic/arylic ethers, in which the ethers will rearranged to carbonyl compound.

(c)

Interpretation Introduction

Interpretation:

For each of the given reactions, the product should be determined.

Concept introduction:

  • Sigmatropic rearrangement reaction is a pericyclic reaction of polyenes (π-system), in which one σ-bond is formed and another σ-bond is broken and remaining π-bonds are shifting their positions. Thereby the transition state is cyclic. The mechanism of rearrangement is represented by using curved arrows.
  • Cope Rearrangement is a [3,3] sigamatropic rearrangement, in which the π-system having 6 carbons and double bonds are situated at both ends.
  • Claisen Rearrangement is a [3,3] sigamatropic rearrangement of allylic vinylic/arylic ethers, in which the ethers will rearranged to carbonyl compound.

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Chapter 17 Solutions

Organic Chemistry, Binder Ready Version

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