(a) Interpretation: The carbonyl compounds needed to synthesize octinoxate using a condensation reaction is to be predicted. Concept introduction: Claisen condensation takes place between two esters or between an ester and a ketone . In crossed Claisen condensation reaction, a base abstracts an acidic proton from an α carbon atom of carbonyl group to form an enolate. This enolate reacts with carbonyl group of other carbonyl compounds that lead to the formation of β -ketoester.

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Answer 1

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Chapter 24, Problem 24.64P

Interpretation Introduction

(a)

Interpretation: The carbonyl compounds needed to synthesize octinoxate using a condensation reaction is to be predicted.

Concept introduction: Claisen condensation takes place between two esters or between an ester and a ketone. In crossed Claisen condensation reaction, a base abstracts an acidic proton from an α carbon atom of carbonyl group to form an enolate. This enolate reacts with carbonyl group of other carbonyl compounds that lead to the formation of β-ketoester.

Interpretation Introduction

(b)

Interpretation: Synthesis of octinoxate is to be devised from the given starting materials and other needed reagents is to be devised.

Concept introduction: In Aldol condensation reaction, the base abstracts the acidic proton from α carbon atom to form enolate. This enolate or enol reacts with carbonyl compound that leads to the formation of β-hydroxyaldehyde or β-hydroxyketone which on further dehydration gives the conjugated enone.

Claisen condensation takes place between two esters or between an ester and a ketone. In crossed Claisen condensation reaction, a base abstracts an acidic proton from an α carbon atom of carbonyl group to form an enolate. This enolate reacts with carbonyl group of other carbonyl compounds that lead to the formation of β-ketoester.

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14 Question (1 point) Disiamylborane adds to a triple bond to give an alkenylborane. Upon oxidation with OH, H2O2, the alkenylborane will form an enol that tautomerizes to an aldehyde. In the first box below, draw the mechanism arrows for the reaction of disiamylborane with the alkyne, and in the last box draw the structure of the aldehyde. 4th attempt Feedback i > 3rd attempt OH, H2O2 i See Periodic Table See Hint

answer with mechanisms and steps. handwritten please!

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Answer 2

Question

Chapter 24, Problem 24.64P

Interpretation Introduction

(a)

Interpretation: The carbonyl compounds needed to synthesize octinoxate using a condensation reaction is to be predicted.

Concept introduction: Claisen condensation takes place between two esters or between an ester and a ketone. In crossed Claisen condensation reaction, a base abstracts an acidic proton from an α carbon atom of carbonyl group to form an enolate. This enolate reacts with carbonyl group of other carbonyl compounds that lead to the formation of β-ketoester.

Interpretation Introduction

(b)

Interpretation: Synthesis of octinoxate is to be devised from the given starting materials and other needed reagents is to be devised.

Concept introduction: In Aldol condensation reaction, the base abstracts the acidic proton from α carbon atom to form enolate. This enolate or enol reacts with carbonyl compound that leads to the formation of β-hydroxyaldehyde or β-hydroxyketone which on further dehydration gives the conjugated enone.

Claisen condensation takes place between two esters or between an ester and a ketone. In crossed Claisen condensation reaction, a base abstracts an acidic proton from an α carbon atom of carbonyl group to form an enolate. This enolate reacts with carbonyl group of other carbonyl compounds that lead to the formation of β-ketoester.

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Answer 3

Question

Chapter 24, Problem 24.64P

Interpretation Introduction

(a)

Interpretation: The carbonyl compounds needed to synthesize octinoxate using a condensation reaction is to be predicted.

Concept introduction: Claisen condensation takes place between two esters or between an ester and a ketone. In crossed Claisen condensation reaction, a base abstracts an acidic proton from an α carbon atom of carbonyl group to form an enolate. This enolate reacts with carbonyl group of other carbonyl compounds that lead to the formation of β-ketoester.

Interpretation Introduction

(b)

Interpretation: Synthesis of octinoxate is to be devised from the given starting materials and other needed reagents is to be devised.

Concept introduction: In Aldol condensation reaction, the base abstracts the acidic proton from α carbon atom to form enolate. This enolate or enol reacts with carbonyl compound that leads to the formation of β-hydroxyaldehyde or β-hydroxyketone which on further dehydration gives the conjugated enone.

Claisen condensation takes place between two esters or between an ester and a ketone. In crossed Claisen condensation reaction, a base abstracts an acidic proton from an α carbon atom of carbonyl group to form an enolate. This enolate reacts with carbonyl group of other carbonyl compounds that lead to the formation of β-ketoester.

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Answer 4

Question

Chapter 24, Problem 24.64P

Interpretation Introduction

(a)

Interpretation: The carbonyl compounds needed to synthesize octinoxate using a condensation reaction is to be predicted.

Concept introduction: Claisen condensation takes place between two esters or between an ester and a ketone. In crossed Claisen condensation reaction, a base abstracts an acidic proton from an α carbon atom of carbonyl group to form an enolate. This enolate reacts with carbonyl group of other carbonyl compounds that lead to the formation of β-ketoester.

Interpretation Introduction

(b)

Interpretation: Synthesis of octinoxate is to be devised from the given starting materials and other needed reagents is to be devised.

Concept introduction: In Aldol condensation reaction, the base abstracts the acidic proton from α carbon atom to form enolate. This enolate or enol reacts with carbonyl compound that leads to the formation of β-hydroxyaldehyde or β-hydroxyketone which on further dehydration gives the conjugated enone.

Claisen condensation takes place between two esters or between an ester and a ketone. In crossed Claisen condensation reaction, a base abstracts an acidic proton from an α carbon atom of carbonyl group to form an enolate. This enolate reacts with carbonyl group of other carbonyl compounds that lead to the formation of β-ketoester.

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Answer 5

Chapter 24, Problem 24.64P

Interpretation Introduction

(a)

Interpretation: The carbonyl compounds needed to synthesize octinoxate using a condensation reaction is to be predicted.

Concept introduction: Claisen condensation takes place between two esters or between an ester and a ketone. In crossed Claisen condensation reaction, a base abstracts an acidic proton from an α carbon atom of carbonyl group to form an enolate. This enolate reacts with carbonyl group of other carbonyl compounds that lead to the formation of β-ketoester.

Interpretation Introduction

(b)

Interpretation: Synthesis of octinoxate is to be devised from the given starting materials and other needed reagents is to be devised.

Concept introduction: In Aldol condensation reaction, the base abstracts the acidic proton from α carbon atom to form enolate. This enolate or enol reacts with carbonyl compound that leads to the formation of β-hydroxyaldehyde or β-hydroxyketone which on further dehydration gives the conjugated enone.

Claisen condensation takes place between two esters or between an ester and a ketone. In crossed Claisen condensation reaction, a base abstracts an acidic proton from an α carbon atom of carbonyl group to form an enolate. This enolate reacts with carbonyl group of other carbonyl compounds that lead to the formation of β-ketoester.

Answer 6

Chapter 24, Problem 24.64P

Interpretation Introduction

(a)

Interpretation: The carbonyl compounds needed to synthesize octinoxate using a condensation reaction is to be predicted.

Concept introduction: Claisen condensation takes place between two esters or between an ester and a ketone. In crossed Claisen condensation reaction, a base abstracts an acidic proton from an α carbon atom of carbonyl group to form an enolate. This enolate reacts with carbonyl group of other carbonyl compounds that lead to the formation of β-ketoester.

Answer 7

Chapter 24, Problem 24.64P

Interpretation Introduction

(a)

Interpretation: The carbonyl compounds needed to synthesize octinoxate using a condensation reaction is to be predicted.

Concept introduction: Claisen condensation takes place between two esters or between an ester and a ketone. In crossed Claisen condensation reaction, a base abstracts an acidic proton from an α carbon atom of carbonyl group to form an enolate. This enolate reacts with carbonyl group of other carbonyl compounds that lead to the formation of β-ketoester.

Answer 8

Interpretation Introduction

(b)

Interpretation: Synthesis of octinoxate is to be devised from the given starting materials and other needed reagents is to be devised.

Concept introduction: In Aldol condensation reaction, the base abstracts the acidic proton from α carbon atom to form enolate. This enolate or enol reacts with carbonyl compound that leads to the formation of β-hydroxyaldehyde or β-hydroxyketone which on further dehydration gives the conjugated enone.

Claisen condensation takes place between two esters or between an ester and a ketone. In crossed Claisen condensation reaction, a base abstracts an acidic proton from an α carbon atom of carbonyl group to form an enolate. This enolate reacts with carbonyl group of other carbonyl compounds that lead to the formation of β-ketoester.

Answer 9

Interpretation Introduction

(b)

Interpretation: Synthesis of octinoxate is to be devised from the given starting materials and other needed reagents is to be devised.

Concept introduction: In Aldol condensation reaction, the base abstracts the acidic proton from α carbon atom to form enolate. This enolate or enol reacts with carbonyl compound that leads to the formation of β-hydroxyaldehyde or β-hydroxyketone which on further dehydration gives the conjugated enone.

Claisen condensation takes place between two esters or between an ester and a ketone. In crossed Claisen condensation reaction, a base abstracts an acidic proton from an α carbon atom of carbonyl group to form an enolate. This enolate reacts with carbonyl group of other carbonyl compounds that lead to the formation of β-ketoester.

Answer 10

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Answer 13

Ch. 24 - Prob. 24.1P Ch. 24 - Prob. 24.2P Ch. 24 - Problem 24.3 What unsaturated carbonyl compound is...Ch. 24 - Prob. 24.4P Ch. 24 - Prob. 24.5P Ch. 24 - Prob. 24.6P Ch. 24 - Problem 24.7 Draw the products formed in each...Ch. 24 - Problem 24.8 Draw the products formed in the...Ch. 24 - Prob. 24.9P Ch. 24 - Prob. 24.10P

Solution Summary: The author explains that the carbonyl compounds needed to synthesize octinoxate using a condensation reaction are shown in Figure 1.

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