When 1, 3, 5-cyclooctatriene, A , is heated to 80-100 °C, it comes to equilibrium with an isomeric compound B .Treatment of the mixture of A and B with C H 3 O 2 C - C ≡ C - C O 2 C H 3 gives a compound C , which, when heated to 200 °C for 20 minutes, gives dimethyl phthalate and cyclobutene. The compounds B and C , is to be stated and the reactions have occurred is to be explained. Concept introduction: Commonly, cycloaddition reaction can be referred as a reaction of two different π-electron systems to form a ring product. Notably, in this reaction two new sigma bonds are formed in product with the disappearance of two fewer π-bonds. In other words, cyclo addition reaction can be best described as the reaction of number of electrons involved. In [4+2] cycloaddition one component is having four electrons and other component is having two electrons.

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Answer 1

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Chapter 28, Problem 28.40AP

Interpretation Introduction

Interpretation:

When 1, 3, 5-cyclooctatriene, A, is heated to 80-100 °C, it comes to equilibrium with an isomeric compound B.Treatment of the mixture of A and B with CH3O2C-C≡C-CO2CH3 gives a compound C, which, when heated to 200 °C for 20 minutes, gives dimethyl phthalate and cyclobutene. The compounds B and C, is to be stated and the reactions have occurred is to be explained.

Concept introduction:

Commonly, cycloaddition reaction can be referred as a reaction of two different π-electron systems to form a ring product. Notably, in this reaction two new sigma bonds are formed in product with the disappearance of two fewer π-bonds. In other words, cyclo addition reaction can be best described as the reaction of number of electrons involved. In [4+2] cycloaddition one component is having four electrons and other component is having two electrons.

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Draw the two products of the reaction. H₂C. CH₂ H :0: CH3 CH₂ +1

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Answer 2

Question

Chapter 28, Problem 28.40AP

Interpretation Introduction

Interpretation:

When 1, 3, 5-cyclooctatriene, A, is heated to 80-100 °C, it comes to equilibrium with an isomeric compound B.Treatment of the mixture of A and B with CH3O2C-C≡C-CO2CH3 gives a compound C, which, when heated to 200 °C for 20 minutes, gives dimethyl phthalate and cyclobutene. The compounds B and C, is to be stated and the reactions have occurred is to be explained.

Concept introduction:

Commonly, cycloaddition reaction can be referred as a reaction of two different π-electron systems to form a ring product. Notably, in this reaction two new sigma bonds are formed in product with the disappearance of two fewer π-bonds. In other words, cyclo addition reaction can be best described as the reaction of number of electrons involved. In [4+2] cycloaddition one component is having four electrons and other component is having two electrons.

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Answer 3

Question

Chapter 28, Problem 28.40AP

Interpretation Introduction

Interpretation:

When 1, 3, 5-cyclooctatriene, A, is heated to 80-100 °C, it comes to equilibrium with an isomeric compound B.Treatment of the mixture of A and B with CH3O2C-C≡C-CO2CH3 gives a compound C, which, when heated to 200 °C for 20 minutes, gives dimethyl phthalate and cyclobutene. The compounds B and C, is to be stated and the reactions have occurred is to be explained.

Concept introduction:

Commonly, cycloaddition reaction can be referred as a reaction of two different π-electron systems to form a ring product. Notably, in this reaction two new sigma bonds are formed in product with the disappearance of two fewer π-bonds. In other words, cyclo addition reaction can be best described as the reaction of number of electrons involved. In [4+2] cycloaddition one component is having four electrons and other component is having two electrons.

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Answer 4

Question

Chapter 28, Problem 28.40AP

Interpretation Introduction

Interpretation:

When 1, 3, 5-cyclooctatriene, A, is heated to 80-100 °C, it comes to equilibrium with an isomeric compound B.Treatment of the mixture of A and B with CH3O2C-C≡C-CO2CH3 gives a compound C, which, when heated to 200 °C for 20 minutes, gives dimethyl phthalate and cyclobutene. The compounds B and C, is to be stated and the reactions have occurred is to be explained.

Concept introduction:

Commonly, cycloaddition reaction can be referred as a reaction of two different π-electron systems to form a ring product. Notably, in this reaction two new sigma bonds are formed in product with the disappearance of two fewer π-bonds. In other words, cyclo addition reaction can be best described as the reaction of number of electrons involved. In [4+2] cycloaddition one component is having four electrons and other component is having two electrons.

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Answer 5

Chapter 28, Problem 28.40AP

Interpretation Introduction

Interpretation:

When 1, 3, 5-cyclooctatriene, A, is heated to 80-100 °C, it comes to equilibrium with an isomeric compound B.Treatment of the mixture of A and B with CH3O2C-C≡C-CO2CH3 gives a compound C, which, when heated to 200 °C for 20 minutes, gives dimethyl phthalate and cyclobutene. The compounds B and C, is to be stated and the reactions have occurred is to be explained.

Concept introduction:

Commonly, cycloaddition reaction can be referred as a reaction of two different π-electron systems to form a ring product. Notably, in this reaction two new sigma bonds are formed in product with the disappearance of two fewer π-bonds. In other words, cyclo addition reaction can be best described as the reaction of number of electrons involved. In [4+2] cycloaddition one component is having four electrons and other component is having two electrons.

Answer 6

Chapter 28, Problem 28.40AP

Interpretation Introduction

Interpretation:

When 1, 3, 5-cyclooctatriene, A, is heated to 80-100 °C, it comes to equilibrium with an isomeric compound B.Treatment of the mixture of A and B with CH3O2C-C≡C-CO2CH3 gives a compound C, which, when heated to 200 °C for 20 minutes, gives dimethyl phthalate and cyclobutene. The compounds B and C, is to be stated and the reactions have occurred is to be explained.

Concept introduction:

Commonly, cycloaddition reaction can be referred as a reaction of two different π-electron systems to form a ring product. Notably, in this reaction two new sigma bonds are formed in product with the disappearance of two fewer π-bonds. In other words, cyclo addition reaction can be best described as the reaction of number of electrons involved. In [4+2] cycloaddition one component is having four electrons and other component is having two electrons.

Answer 7

Chapter 28, Problem 28.40AP

Interpretation Introduction

Interpretation:

When 1, 3, 5-cyclooctatriene, A, is heated to 80-100 °C, it comes to equilibrium with an isomeric compound B.Treatment of the mixture of A and B with CH3O2C-C≡C-CO2CH3 gives a compound C, which, when heated to 200 °C for 20 minutes, gives dimethyl phthalate and cyclobutene. The compounds B and C, is to be stated and the reactions have occurred is to be explained.

Concept introduction:

Commonly, cycloaddition reaction can be referred as a reaction of two different π-electron systems to form a ring product. Notably, in this reaction two new sigma bonds are formed in product with the disappearance of two fewer π-bonds. In other words, cyclo addition reaction can be best described as the reaction of number of electrons involved. In [4+2] cycloaddition one component is having four electrons and other component is having two electrons.

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Answer 11

Ch. 28 - Prob. 28.1P Ch. 28 - Prob. 28.2P Ch. 28 - Prob. 28.3P Ch. 28 - Prob. 28.4P Ch. 28 - Prob. 28.5P Ch. 28 - Prob. 28.6P Ch. 28 - Prob. 28.7P Ch. 28 - Prob. 28.8P Ch. 28 - Prob. 28.9P Ch. 28 - Prob. 28.10P

Solution Summary: The author explains that cycloaddition reaction is the reaction of two different -electron systems to form a ring product.

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Chapter 28 Solutions