The synthesis of Cinnamaldehyde by a crossed aldol condensation followed by dehydration is to be proposed. Concept introduction: The reaction between the enolate of one aldehyde or ketone and the carbonyl group of a different aldehyde or ketone is known as crossed aldol condensation reaction. The reaction takes place only when one of the reactant has an alpha hydrogen atom.

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Answer 1

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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 22.29P

(a)

Interpretation Introduction

Interpretation:

The synthesis of Cinnamaldehyde by a crossed aldol condensation followed by dehydration is to be proposed.

Concept introduction:

The reaction between the enolate of one aldehyde or ketone and the carbonyl group of a different aldehyde or ketone is known as crossed aldol condensation reaction. The reaction takes place only when one of the reactant has an alpha hydrogen atom.

(b)

Interpretation Introduction

Interpretation:

The complete reaction in each given case is to be stated and an explanation for the observation of different results is to be explained.

Concept introduction:

LDA (Lithium Di-isopropyl Amide) is a strong base with a molecular formula, [(CH3)2CH]2NLi. It is most commonly used in the formation of enolates. Enolate acts as a useful nucleophile that participates in SN2 reaction as well as aldol reaction.

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) Cinnamaldehyde is used in artificial cinnamon flavoring. Show how cinnamaldehydeis synthesized by a crossed aldol condensation followed by dehydration.H CHcinnamaldehyde C COH(b) Adding acetophenone slowly to a cold solution of LDA produces the enolate of acetophenone; but adding LDA slowly to a cold solution of acetophenone produces acondensation product. Show the reactions happening in each case, and explain why weobserve such different results

) Cinnamaldehyde is used in artificial cinnamon flavoring. Show how cinnamaldehydeis synthesized by a crossed aldol condensation followed by dehydration.

Draw the product formed when each dicarbonyl compound undergoes an intramolecular aldol reaction followed by dehydration, when possible.

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 22.29P

(a)

Interpretation Introduction

Interpretation:

The synthesis of Cinnamaldehyde by a crossed aldol condensation followed by dehydration is to be proposed.

Concept introduction:

The reaction between the enolate of one aldehyde or ketone and the carbonyl group of a different aldehyde or ketone is known as crossed aldol condensation reaction. The reaction takes place only when one of the reactant has an alpha hydrogen atom.

(b)

Interpretation Introduction

Interpretation:

The complete reaction in each given case is to be stated and an explanation for the observation of different results is to be explained.

Concept introduction:

LDA (Lithium Di-isopropyl Amide) is a strong base with a molecular formula, [(CH3)2CH]2NLi. It is most commonly used in the formation of enolates. Enolate acts as a useful nucleophile that participates in SN2 reaction as well as aldol reaction.

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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 22.29P

(a)

Interpretation Introduction

Interpretation:

The synthesis of Cinnamaldehyde by a crossed aldol condensation followed by dehydration is to be proposed.

Concept introduction:

The reaction between the enolate of one aldehyde or ketone and the carbonyl group of a different aldehyde or ketone is known as crossed aldol condensation reaction. The reaction takes place only when one of the reactant has an alpha hydrogen atom.

(b)

Interpretation Introduction

Interpretation:

The complete reaction in each given case is to be stated and an explanation for the observation of different results is to be explained.

Concept introduction:

LDA (Lithium Di-isopropyl Amide) is a strong base with a molecular formula, [(CH3)2CH]2NLi. It is most commonly used in the formation of enolates. Enolate acts as a useful nucleophile that participates in SN2 reaction as well as aldol reaction.

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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 22.29P

(a)

Interpretation Introduction

Interpretation:

The synthesis of Cinnamaldehyde by a crossed aldol condensation followed by dehydration is to be proposed.

Concept introduction:

The reaction between the enolate of one aldehyde or ketone and the carbonyl group of a different aldehyde or ketone is known as crossed aldol condensation reaction. The reaction takes place only when one of the reactant has an alpha hydrogen atom.

(b)

Interpretation Introduction

Interpretation:

The complete reaction in each given case is to be stated and an explanation for the observation of different results is to be explained.

Concept introduction:

LDA (Lithium Di-isopropyl Amide) is a strong base with a molecular formula, [(CH3)2CH]2NLi. It is most commonly used in the formation of enolates. Enolate acts as a useful nucleophile that participates in SN2 reaction as well as aldol reaction.

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Answer 5

Chapter 22.9, Problem 22.29P

(a)

Interpretation Introduction

Interpretation:

The synthesis of Cinnamaldehyde by a crossed aldol condensation followed by dehydration is to be proposed.

Concept introduction:

The reaction between the enolate of one aldehyde or ketone and the carbonyl group of a different aldehyde or ketone is known as crossed aldol condensation reaction. The reaction takes place only when one of the reactant has an alpha hydrogen atom.

(b)

Interpretation Introduction

Interpretation:

The complete reaction in each given case is to be stated and an explanation for the observation of different results is to be explained.

Concept introduction:

LDA (Lithium Di-isopropyl Amide) is a strong base with a molecular formula, [(CH3)2CH]2NLi. It is most commonly used in the formation of enolates. Enolate acts as a useful nucleophile that participates in SN2 reaction as well as aldol reaction.

Answer 6

Chapter 22.9, Problem 22.29P

(a)

Interpretation Introduction

Interpretation:

The synthesis of Cinnamaldehyde by a crossed aldol condensation followed by dehydration is to be proposed.

Concept introduction:

The reaction between the enolate of one aldehyde or ketone and the carbonyl group of a different aldehyde or ketone is known as crossed aldol condensation reaction. The reaction takes place only when one of the reactant has an alpha hydrogen atom.

Answer 7

Chapter 22.9, Problem 22.29P

(a)

Interpretation Introduction

Interpretation:

The synthesis of Cinnamaldehyde by a crossed aldol condensation followed by dehydration is to be proposed.

Concept introduction:

The reaction between the enolate of one aldehyde or ketone and the carbonyl group of a different aldehyde or ketone is known as crossed aldol condensation reaction. The reaction takes place only when one of the reactant has an alpha hydrogen atom.

Answer 8

(b)

Interpretation Introduction

Interpretation:

The complete reaction in each given case is to be stated and an explanation for the observation of different results is to be explained.

Concept introduction:

LDA (Lithium Di-isopropyl Amide) is a strong base with a molecular formula, [(CH3)2CH]2NLi. It is most commonly used in the formation of enolates. Enolate acts as a useful nucleophile that participates in SN2 reaction as well as aldol reaction.

Answer 9

(b)

Interpretation Introduction

Interpretation:

The complete reaction in each given case is to be stated and an explanation for the observation of different results is to be explained.

Concept introduction:

LDA (Lithium Di-isopropyl Amide) is a strong base with a molecular formula, [(CH3)2CH]2NLi. It is most commonly used in the formation of enolates. Enolate acts as a useful nucleophile that participates in SN2 reaction as well as aldol reaction.

Answer 10

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Answer 11

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Answer 12

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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 proposes the synthesis of Cinnamaldehyde by a crossed aldol condensation followed by dehydration.

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