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 21PTS

(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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For each reaction below, decide if the first stable organic product that forms in solution will create a new CC bond, and check the appropriate box. Next, for each reaction to which you answered "Yes" to in the table, draw this product in the drawing area below. Note for advanced students: for this problem, don't worry if you think this product will continue to react under the current conditions - just focus on the first stable product you expect to form in solution. ? NH2 MgBr Will the first product that forms in this reaction create a new CC bond? ○ Yes ○ No MgBr ? Will the first product that forms in this reaction create a new CC bond? O Yes O No Click and drag to start drawing a structure. :☐ G x c olo Ar HE

Predicting As the lead product manager at OrganometALEKS Industries, you are trying to decide if the following reaction will make a molecule with a new C - C bond as its major product: H₂N O H 1. ? 2. H3O+ If this reaction will work, draw the major organic product or products you would expect in the drawing area below. If there's more than one major product, you can draw them in any arrangement you like. Be sure you use wedge and dash bonds if necessary, for example to distinguish between major products with different stereochemistry. 0 If the major products of this reaction won't have a new CC bond, just check the box under the drawing area and leave it blank. فا Explanation Check Click and drag to start drawing a structure.

Highlight the chirality (or stereogenic) center(s) in the given compound. A compound may have one or more stereogenic centers. OH OH OH OH OH OH

Answer 2

Question

Chapter 16.9, Problem 21PTS

(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 21PTS

(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 21PTS

(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 21PTS

(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 21PTS

(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 21PTS

(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