A mechanism for the thermal rearrangement of vinyl substituted cyclopropanes in to cyclopentenes identifying the pericyclic process involved is to be proposed. Concept introduction: Sigmatropic rearrangements involve the migration of a Ïƒ bond present at the end or in the middle of the system across the Ï€ electron system from one position to another. They are represented by [m,n] where m and n represents the number of atoms between the bond being broken and the bond being formed in two directions. If even number of electron pair is involved then thermal reaction occur through antarafacial pathway and photochemical reactions occur through suprafacial pathway. If odd number of electron pair is involved then thermal reaction occur through suprafacial pathway and photochemical reactions occur through antarafacial pathway. To propose: A mechanism for the thermal rearrangement of vinyl substituted cyclopropanes in to cyclopentenes identifying the pericyclic process involved.

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Answer 1

Question

Chapter 30.SE, Problem 30AP

Interpretation Introduction

Interpretation:

A mechanism for the thermal rearrangement of vinyl substituted cyclopropanes in to cyclopentenes identifying the pericyclic process involved is to be proposed.

Concept introduction:

Sigmatropic rearrangements involve the migration of a Ïƒ bond present at the end or in the middle of the system across the Ï€ electron system from one position to another. They are represented by [m,n] where m and n represents the number of atoms between the bond being broken and the bond being formed in two directions.

If even number of electron pair is involved then thermal reaction occur through antarafacial pathway and photochemical reactions occur through suprafacial pathway.

If odd number of electron pair is involved then thermal reaction occur through suprafacial pathway and photochemical reactions occur through antarafacial pathway.

To propose:

A mechanism for the thermal rearrangement of vinyl substituted cyclopropanes in to cyclopentenes identifying the pericyclic process involved.

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Determine whether solutions formed by each salt are acidic, basic or neutral.a. NaHCO3 b. CH3CH2NH3Cl c. KNO3 d. Fe(NO3)3

Answer 2

Question

Chapter 30.SE, Problem 30AP

Interpretation Introduction

Interpretation:

A mechanism for the thermal rearrangement of vinyl substituted cyclopropanes in to cyclopentenes identifying the pericyclic process involved is to be proposed.

Concept introduction:

Sigmatropic rearrangements involve the migration of a Ïƒ bond present at the end or in the middle of the system across the Ï€ electron system from one position to another. They are represented by [m,n] where m and n represents the number of atoms between the bond being broken and the bond being formed in two directions.

If even number of electron pair is involved then thermal reaction occur through antarafacial pathway and photochemical reactions occur through suprafacial pathway.

If odd number of electron pair is involved then thermal reaction occur through suprafacial pathway and photochemical reactions occur through antarafacial pathway.

To propose:

A mechanism for the thermal rearrangement of vinyl substituted cyclopropanes in to cyclopentenes identifying the pericyclic process involved.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 30.SE, Problem 30AP

Interpretation Introduction

Interpretation:

A mechanism for the thermal rearrangement of vinyl substituted cyclopropanes in to cyclopentenes identifying the pericyclic process involved is to be proposed.

Concept introduction:

Sigmatropic rearrangements involve the migration of a Ïƒ bond present at the end or in the middle of the system across the Ï€ electron system from one position to another. They are represented by [m,n] where m and n represents the number of atoms between the bond being broken and the bond being formed in two directions.

If even number of electron pair is involved then thermal reaction occur through antarafacial pathway and photochemical reactions occur through suprafacial pathway.

If odd number of electron pair is involved then thermal reaction occur through suprafacial pathway and photochemical reactions occur through antarafacial pathway.

To propose:

A mechanism for the thermal rearrangement of vinyl substituted cyclopropanes in to cyclopentenes identifying the pericyclic process involved.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 30.SE, Problem 30AP

Interpretation Introduction

Interpretation:

A mechanism for the thermal rearrangement of vinyl substituted cyclopropanes in to cyclopentenes identifying the pericyclic process involved is to be proposed.

Concept introduction:

Sigmatropic rearrangements involve the migration of a Ïƒ bond present at the end or in the middle of the system across the Ï€ electron system from one position to another. They are represented by [m,n] where m and n represents the number of atoms between the bond being broken and the bond being formed in two directions.

If even number of electron pair is involved then thermal reaction occur through antarafacial pathway and photochemical reactions occur through suprafacial pathway.

If odd number of electron pair is involved then thermal reaction occur through suprafacial pathway and photochemical reactions occur through antarafacial pathway.

To propose:

A mechanism for the thermal rearrangement of vinyl substituted cyclopropanes in to cyclopentenes identifying the pericyclic process involved.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 5

Chapter 30.SE, Problem 30AP

Interpretation Introduction

Interpretation:

A mechanism for the thermal rearrangement of vinyl substituted cyclopropanes in to cyclopentenes identifying the pericyclic process involved is to be proposed.

Concept introduction:

Sigmatropic rearrangements involve the migration of a Ïƒ bond present at the end or in the middle of the system across the Ï€ electron system from one position to another. They are represented by [m,n] where m and n represents the number of atoms between the bond being broken and the bond being formed in two directions.

If even number of electron pair is involved then thermal reaction occur through antarafacial pathway and photochemical reactions occur through suprafacial pathway.

If odd number of electron pair is involved then thermal reaction occur through suprafacial pathway and photochemical reactions occur through antarafacial pathway.

To propose:

A mechanism for the thermal rearrangement of vinyl substituted cyclopropanes in to cyclopentenes identifying the pericyclic process involved.

Answer 6

Chapter 30.SE, Problem 30AP

Interpretation Introduction

Interpretation:

A mechanism for the thermal rearrangement of vinyl substituted cyclopropanes in to cyclopentenes identifying the pericyclic process involved is to be proposed.

Concept introduction:

Sigmatropic rearrangements involve the migration of a Ïƒ bond present at the end or in the middle of the system across the Ï€ electron system from one position to another. They are represented by [m,n] where m and n represents the number of atoms between the bond being broken and the bond being formed in two directions.

If even number of electron pair is involved then thermal reaction occur through antarafacial pathway and photochemical reactions occur through suprafacial pathway.

If odd number of electron pair is involved then thermal reaction occur through suprafacial pathway and photochemical reactions occur through antarafacial pathway.

To propose:

A mechanism for the thermal rearrangement of vinyl substituted cyclopropanes in to cyclopentenes identifying the pericyclic process involved.

Answer 7

Chapter 30.SE, Problem 30AP

Interpretation Introduction

Interpretation:

A mechanism for the thermal rearrangement of vinyl substituted cyclopropanes in to cyclopentenes identifying the pericyclic process involved is to be proposed.

Concept introduction:

Sigmatropic rearrangements involve the migration of a Ïƒ bond present at the end or in the middle of the system across the Ï€ electron system from one position to another. They are represented by [m,n] where m and n represents the number of atoms between the bond being broken and the bond being formed in two directions.

If even number of electron pair is involved then thermal reaction occur through antarafacial pathway and photochemical reactions occur through suprafacial pathway.

If odd number of electron pair is involved then thermal reaction occur through suprafacial pathway and photochemical reactions occur through antarafacial pathway.

To propose:

A mechanism for the thermal rearrangement of vinyl substituted cyclopropanes in to cyclopentenes identifying the pericyclic process involved.

Answer 8

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Answer 9

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Answer 10

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Answer 11

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 process involved in the thermal rearrangement of vinyl substituted cyclopropanes, which is a 1,3- sigmatropic shift.

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Chapter 30 Solutions