The expected product for the aldol condensation of propanal is to be stated. Concept introduction: In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

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Answer 1

Question

Chapter 22.7A, Problem 22.19P

(a)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of propanal is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

(b)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of phenylacetaldehyde is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

(c)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of pentan-3-one is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

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Answer 2

Question

Chapter 22.7A, Problem 22.19P

(a)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of propanal is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

(b)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of phenylacetaldehyde is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

(c)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of pentan-3-one is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

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Answer 3

Question

Chapter 22.7A, Problem 22.19P

(a)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of propanal is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

(b)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of phenylacetaldehyde is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

(c)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of pentan-3-one is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

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Answer 4

Question

Chapter 22.7A, Problem 22.19P

(a)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of propanal is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

(b)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of phenylacetaldehyde is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

(c)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of pentan-3-one is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

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Answer 5

Chapter 22.7A, Problem 22.19P

(a)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of propanal is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

(b)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of phenylacetaldehyde is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

(c)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of pentan-3-one is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

Answer 6

Chapter 22.7A, Problem 22.19P

(a)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of propanal is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

Answer 7

Chapter 22.7A, Problem 22.19P

(a)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of propanal is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

Answer 8

(b)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of phenylacetaldehyde is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

Answer 9

(b)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of phenylacetaldehyde is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

Answer 10

(c)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of pentan-3-one is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

Answer 11

(c)

Interpretation Introduction

Interpretation:

The expected product for the aldol condensation of pentan-3-one is to be stated.

Concept introduction:

In base-catalysed aldol condensation, nucleophilic addition of an enolate ion takes place on a carbonyl group. In first step, an alpha proton is removed to produce enolate ion. It adds to the carbonyl group. In the next step, protonation of alkoxide gives the aldol product.

Answer 12

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Answer 13

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Answer 14

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Answer 15

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 that the expected product for the aldol condensation of propanal is 2-methylpent-2-enal.

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Chapter 22 Solutions