The stepwise mechanism for the given Robinson annulation is to be drawn. Concept introduction: Robinson annulation is a combination of Michael addition and intramolecular aldol condensation reactions. It takes place between an α,β -unsaturated carbonyl compound and a carbonyl compound. The enolate formation takes place from carbonyl compound which attacks the α,β -unsaturated carbonyl compound to form 1 , 5 -dicarbonyl compound. This compound undergoes intramolecular aldol condensation which leads to the formation of a ring.

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Answer 1

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Chapter 22, Problem 53P

Interpretation Introduction

Interpretation: The stepwise mechanism for the given Robinson annulation is to be drawn.

Concept introduction: Robinson annulation is a combination of Michael addition and intramolecular aldol condensation reactions. It takes place between an α,β-unsaturated carbonyl compound and a carbonyl compound. The enolate formation takes place from carbonyl compound which attacks the α,β-unsaturated carbonyl compound to form 1,5-dicarbonyl compound. This compound undergoes intramolecular aldol condensation which leads to the formation of a ring.

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Answer 2

Question

Chapter 22, Problem 53P

Interpretation Introduction

Interpretation: The stepwise mechanism for the given Robinson annulation is to be drawn.

Concept introduction: Robinson annulation is a combination of Michael addition and intramolecular aldol condensation reactions. It takes place between an α,β-unsaturated carbonyl compound and a carbonyl compound. The enolate formation takes place from carbonyl compound which attacks the α,β-unsaturated carbonyl compound to form 1,5-dicarbonyl compound. This compound undergoes intramolecular aldol condensation which leads to the formation of a ring.

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Answer 3

Question

Chapter 22, Problem 53P

Interpretation Introduction

Interpretation: The stepwise mechanism for the given Robinson annulation is to be drawn.

Concept introduction: Robinson annulation is a combination of Michael addition and intramolecular aldol condensation reactions. It takes place between an α,β-unsaturated carbonyl compound and a carbonyl compound. The enolate formation takes place from carbonyl compound which attacks the α,β-unsaturated carbonyl compound to form 1,5-dicarbonyl compound. This compound undergoes intramolecular aldol condensation which leads to the formation of a ring.

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Answer 4

Question

Chapter 22, Problem 53P

Interpretation Introduction

Interpretation: The stepwise mechanism for the given Robinson annulation is to be drawn.

Concept introduction: Robinson annulation is a combination of Michael addition and intramolecular aldol condensation reactions. It takes place between an α,β-unsaturated carbonyl compound and a carbonyl compound. The enolate formation takes place from carbonyl compound which attacks the α,β-unsaturated carbonyl compound to form 1,5-dicarbonyl compound. This compound undergoes intramolecular aldol condensation which leads to the formation of a ring.

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Answer 5

Chapter 22, Problem 53P

Interpretation Introduction

Interpretation: The stepwise mechanism for the given Robinson annulation is to be drawn.

Concept introduction: Robinson annulation is a combination of Michael addition and intramolecular aldol condensation reactions. It takes place between an α,β-unsaturated carbonyl compound and a carbonyl compound. The enolate formation takes place from carbonyl compound which attacks the α,β-unsaturated carbonyl compound to form 1,5-dicarbonyl compound. This compound undergoes intramolecular aldol condensation which leads to the formation of a ring.

Answer 6

Chapter 22, Problem 53P

Interpretation Introduction

Interpretation: The stepwise mechanism for the given Robinson annulation is to be drawn.

Concept introduction: Robinson annulation is a combination of Michael addition and intramolecular aldol condensation reactions. It takes place between an α,β-unsaturated carbonyl compound and a carbonyl compound. The enolate formation takes place from carbonyl compound which attacks the α,β-unsaturated carbonyl compound to form 1,5-dicarbonyl compound. This compound undergoes intramolecular aldol condensation which leads to the formation of a ring.

Answer 7

Chapter 22, Problem 53P

Interpretation Introduction

Interpretation: The stepwise mechanism for the given Robinson annulation is to be drawn.

Concept introduction: Robinson annulation is a combination of Michael addition and intramolecular aldol condensation reactions. It takes place between an α,β-unsaturated carbonyl compound and a carbonyl compound. The enolate formation takes place from carbonyl compound which attacks the α,β-unsaturated carbonyl compound to form 1,5-dicarbonyl compound. This compound undergoes intramolecular aldol condensation which leads to the formation of a ring.

Answer 8

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Answer 11

Ch. 22.1 - Prob. 1P Ch. 22.1 - Prob. 2P Ch. 22.1 - Problem 24.3 What unsaturated carbonyl compound is...Ch. 22.1 - Prob. 4P Ch. 22.1 - Prob. 5P Ch. 22.2 - Prob. 6P Ch. 22.2 - Problem 24.7 Draw the products formed in each...Ch. 22.4 - Prob. 15P Ch. 22.4 - Prob. 16P Ch. 22.5 - Problem 24.16 What ester is formed when each...

Solution Summary: The author explains the stepwise mechanism for the given Robinson annulation: Michael addition and intramolecular aldol condensation reactions.

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Chapter 22 Solutions