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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(6 pts - 2 pts each part) Although we focused our discussion on hydrogen light emission, all elements have distinctive emission spectra. Sodium (Na) is famous for its spectrum being dominated by two yellow emission lines at 589.0 and 589.6 nm, respectively. These lines result from electrons relaxing to the 3s subshell. a. What is the photon energy (in J) for one of these emission lines? Show your work. b. To what electronic transition in hydrogen is this photon energy closest to? Justify your answer-you shouldn't need to do numerical calculations. c. Consider the 3s subshell energy for Na - use 0 eV as the reference point for n=∞. What is the energy of the subshell that the electron relaxes from? Choose the same emission line that you did for part (a) and show your work.

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.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

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.

Expert Solution & Answer

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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

Want to see the full answer?

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 - Draw an energy diagram showing the relative energy...Ch. 16.4 - Prob. 1LTS Ch. 16.4 - Prob. 6PTS Ch. 16.4 - Prob. 7PTS Ch. 16.5 - Prob. 2LTS Ch. 16.5 - Predict the products for each of the following...

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