The product of the electrocyclic reaction should be predicted. Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition. π electrons Thermal Photochemical Four π electrons Conrotatory Disrotatory Six π electrons Disrotatory Conrotatory

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Answer 1

Question

Chapter 16.9, Problem 20CC

(a)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

(b)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

(c)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

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Answer 2

Question

Chapter 16.9, Problem 20CC

(a)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

(b)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

(c)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

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Answer 3

Question

Chapter 16.9, Problem 20CC

(a)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

(b)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

(c)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

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Answer 4

Question

Chapter 16.9, Problem 20CC

(a)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

(b)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

(c)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

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Answer 5

Chapter 16.9, Problem 20CC

(a)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

(b)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

(c)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

Answer 6

Chapter 16.9, Problem 20CC

(a)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

Answer 7

Chapter 16.9, Problem 20CC

(a)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

Answer 8

(b)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

Answer 9

(b)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

Answer 10

(c)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

Answer 11

(c)

Interpretation Introduction

Interpretation: The product of the electrocyclic reaction should be predicted.

Concept Introduction : Electrocyclic reactions are caused by either photochemical or thermal conditions. The disrotatory and conrotatory closure of the ring depends on the number of π electrons along with the given condition.

π electrons Thermal Photochemical
Four π electrons Conrotatory Disrotatory
Six π electrons Disrotatory Conrotatory

Answer 12

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Answer 13

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Answer 14

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Answer 15

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...

Solution Summary: The author explains that the product of the electrocyclic reaction should be predicted.

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Chapter 16 Solutions

π electrons	Thermal	Photochemical
Four π electrons	Conrotatory	Disrotatory
Six π electrons	Disrotatory	Conrotatory