The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed. Concept introduction: When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α , β − unsaturated aldehyde or ketone . An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

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Answer 1

Question

Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 22.9, Problem 22.25P

(a)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

(b)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

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Answer 2

Question

Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 22.9, Problem 22.25P

(a)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

(b)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

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Answer 3

Question

Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 22.9, Problem 22.25P

(a)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

(b)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

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Answer 4

Question

Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 22.9, Problem 22.25P

(a)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

(b)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

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Answer 5

Chapter 22.9, Problem 22.25P

(a)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

(b)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

Answer 6

Chapter 22.9, Problem 22.25P

(a)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

Answer 7

Chapter 22.9, Problem 22.25P

(a)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

Answer 8

(b)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

Answer 9

(b)

Interpretation Introduction

Interpretation:

The mechanism for the given base-catalyzed aldol condensation with dehydration is to be proposed.

Concept introduction:

When a basic or acidic mixture of an aldol product is heated, dehydration of an alcohol functional group takes place. The product formed is a conjugated α,β− unsaturated aldehyde or ketone. An aldol condensation followed by dehydration leads to the formation of new carbon-carbon double bond.

Answer 10

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Answer 13

Ch. 22.2A - Prob. 22.2P Ch. 22.4 - Without looking back, propose a mechanism for the...Ch. 22.4 - Prob. 22.8P Ch. 22.4 - Prob. 22.9P Ch. 22.5A - Prob. 22.10P Ch. 22.5A - Prob. 22.11P Ch. 22.5B - Prob. 22.12P Ch. 22.5B - Predict the products of the following reactions....Ch. 22.5B - Which compounds will give positive iodoform tests?...Ch. 22.5C - Propose a mechanism for the acid-catalyzed...

Solution Summary: The author explains the mechanism for the given base-catalyzed aldol condensation with dehydration.

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