The pericyclic reactions involved in the reaction shown are to be identified and a mechanism for the reactions is to be proposed. Concept introduction: In electrocyclic reactions cyclic alkenes or dienes react to yield acyclic conjugated dienes as poducts. A σ bond is broken, a new π bond is formed and some π bonds change their positions. The reactions are reversible. In cycloaddition reactions two unsaturated molecules add to one another to yield a cyclic product.

Question

First image: I have to explain why the molecule C is never formed in those conditions. Second image: I have to propose a synthesis for the lactone A

Answer 1

Question

Chapter 30.SE, Problem 15MP

Interpretation Introduction

Interpretation:

The pericyclic reactions involved in the reaction shown are to be identified and a mechanism for the reactions is to be proposed.

Concept introduction:

In electrocyclic reactions cyclic alkenes or dienes react to yield acyclic conjugated dienes as poducts. A σ bond is broken, a new π bond is formed and some π bonds change their positions. The reactions are reversible.

In cycloaddition reactions two unsaturated molecules add to one another to yield a cyclic product.

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First image: I have to explain why the molecule C is never formed in those conditions. Second image: I have to propose a synthesis for the lactone A

First image: I have to explain why the molecule C is never formed in these conditions Second image: I have to propose a synthesis for the lactone A

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Answer 2

Question

Chapter 30.SE, Problem 15MP

Interpretation Introduction

Interpretation:

The pericyclic reactions involved in the reaction shown are to be identified and a mechanism for the reactions is to be proposed.

Concept introduction:

In electrocyclic reactions cyclic alkenes or dienes react to yield acyclic conjugated dienes as poducts. A σ bond is broken, a new π bond is formed and some π bonds change their positions. The reactions are reversible.

In cycloaddition reactions two unsaturated molecules add to one another to yield a cyclic product.

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Answer 3

Question

Chapter 30.SE, Problem 15MP

Interpretation Introduction

Interpretation:

The pericyclic reactions involved in the reaction shown are to be identified and a mechanism for the reactions is to be proposed.

Concept introduction:

In electrocyclic reactions cyclic alkenes or dienes react to yield acyclic conjugated dienes as poducts. A σ bond is broken, a new π bond is formed and some π bonds change their positions. The reactions are reversible.

In cycloaddition reactions two unsaturated molecules add to one another to yield a cyclic product.

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Answer 4

Question

Chapter 30.SE, Problem 15MP

Interpretation Introduction

Interpretation:

The pericyclic reactions involved in the reaction shown are to be identified and a mechanism for the reactions is to be proposed.

Concept introduction:

In electrocyclic reactions cyclic alkenes or dienes react to yield acyclic conjugated dienes as poducts. A σ bond is broken, a new π bond is formed and some π bonds change their positions. The reactions are reversible.

In cycloaddition reactions two unsaturated molecules add to one another to yield a cyclic product.

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Answer 5

Chapter 30.SE, Problem 15MP

Interpretation Introduction

Interpretation:

The pericyclic reactions involved in the reaction shown are to be identified and a mechanism for the reactions is to be proposed.

Concept introduction:

In electrocyclic reactions cyclic alkenes or dienes react to yield acyclic conjugated dienes as poducts. A σ bond is broken, a new π bond is formed and some π bonds change their positions. The reactions are reversible.

In cycloaddition reactions two unsaturated molecules add to one another to yield a cyclic product.

Answer 6

Chapter 30.SE, Problem 15MP

Interpretation Introduction

Interpretation:

The pericyclic reactions involved in the reaction shown are to be identified and a mechanism for the reactions is to be proposed.

Concept introduction:

In electrocyclic reactions cyclic alkenes or dienes react to yield acyclic conjugated dienes as poducts. A σ bond is broken, a new π bond is formed and some π bonds change their positions. The reactions are reversible.

In cycloaddition reactions two unsaturated molecules add to one another to yield a cyclic product.

Answer 7

Chapter 30.SE, Problem 15MP

Interpretation Introduction

Interpretation:

The pericyclic reactions involved in the reaction shown are to be identified and a mechanism for the reactions is to be proposed.

Concept introduction:

In electrocyclic reactions cyclic alkenes or dienes react to yield acyclic conjugated dienes as poducts. A σ bond is broken, a new π bond is formed and some π bonds change their positions. The reactions are reversible.

In cycloaddition reactions two unsaturated molecules add to one another to yield a cyclic product.

Answer 8

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Answer 19

Ch. 30.1 - Prob. 1P Ch. 30.3 - Prob. 2P Ch. 30.3 - Prob. 3P Ch. 30.4 - Prob. 4P Ch. 30.6 - What stereochemistry would you expect for the...Ch. 30.6 - Prob. 6P Ch. 30.7 - Prob. 7P Ch. 30.8 - Propose a mechanism to account for the fact that...Ch. 30.8 - When a 2, 6-disubstituted allyl phenyl ether is...Ch. 30.9 - Prob. 10P

Solution Summary: The author explains the pericyclic reactions involved in the reaction shown and proposes a mechanism for the reactions.

Chapter 30 Solutions