The given compounds are not participating as a diene in a Diels-Alder reaction should be explained. Concept introduction: The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes . Based on the proximity of C = C bonds in dienes, they are classified into three. Cumulated dienes: the C = C bonds are located adjacent carbons. Conjugated dienes : the C = C bonds or C = C and C = O are separated by one σ-bond. Isolated dienes: the C = C bonds are separated by two or more σ-bonds. Diels-Alder reaction is a [ 4+2 ] cycloaddition reaction, in which a π-system ( conjugated ) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene . Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile. The dienes shows conformations due to free rotation of C − C bond. The conformations are s-cis and s-trans . Example, the conformations for 1,3-butadiene are, Steric hindrance on the dienes prevents the s-cis conformations. To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

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Answer 1

Question

Chapter 16, Problem 39PP

(a)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

(b)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

(c)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

(d)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

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2) (4 pt) After the reaction was completed, the student collected the following data. Crude product data is the data collected after the reaction is finished, but before the product is purified. "Pure" product data is the data collected after attempted purification using recrystallization. Student B's data: Crude product data "Pure" product data after recrystallization Crude mass: 0.93 g grey solid Crude mp: 96-106 °C Crude % yield: Pure mass: 0.39 g white solid Pure mp: 111-113 °C Pure % yield: a) Calculate the crude and pure percent yields for the student's reaction. b) Summarize what is indicated by the crude and pure melting points.

Don't used hand raiting

Answer 2

Question

Chapter 16, Problem 39PP

(a)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

(b)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

(c)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

(d)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

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Check out a sample textbook solution

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Answer 3

Question

Chapter 16, Problem 39PP

(a)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

(b)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

(c)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

(d)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

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Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 16, Problem 39PP

(a)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

(b)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

(c)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

(d)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 5

Chapter 16, Problem 39PP

(a)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

(b)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

(c)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

(d)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

Answer 6

Chapter 16, Problem 39PP

(a)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

Answer 7

Chapter 16, Problem 39PP

(a)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

Answer 8

(b)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

Answer 9

(b)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

Answer 10

(c)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

Answer 11

(c)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

Answer 12

(d)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

Answer 13

(d)

Interpretation Introduction

Interpretation:

The given compounds are not participating as a diene in a Diels-Alder reaction should be explained.

Concept introduction:

The compounds having two C = C π bonds or C = C bond with C = O bonds are called dienes.

Based on the proximity of C = C bonds in dienes, they are classified into three.

Cumulated dienes: the C = C bonds are located adjacent carbons.

Conjugated dienes: the C = C bonds or C = C and C = O are separated by one σ-bond.

Isolated dienes: the C = C bonds are separated by two or more σ-bonds.

Diels-Alder reaction is a [4+2] cycloaddition reaction, in which a π-system (conjugated) having four atoms (conjugated diene) and a π-system having two atoms (dienophile) are undergoing in cycloaddition reaction and producing a substituted cyclohexene.

Only the diene having s-cis conformation will undergo Diels-Alder reaction with dienophile.

The dienes shows conformations due to free rotation of C−C bond. The conformations are s-cis and s-trans.

Example, the conformations for 1,3-butadiene are,

Steric hindrance on the dienes prevents the s-cis conformations.

To explain: the given compounds are not participating as a diene in a Diels-Alder reaction.

Answer 14

Expert Solution & Answer

Answer 15

Expert Solution & Answer

Answer 16

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Answer 17

Ch. 16.1 - Prob. 1CC Ch. 16.2 - Prob. 2CC Ch. 16.2 - Prob. 3CC Ch. 16.2 - Prob. 4CC Ch. 16.3 - Prob. 5CC Ch. 16.4 - Prob. 1LTS Ch. 16.4 - Prob. 6PTS Ch. 16.4 - Prob. 7PTS Ch. 16.4 - Prob. 8ATS Ch. 16.5 - Prob. 2LTS

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