(a) Interpretation: Nabumetone from ethyl acetoacetate is to be synthesized. Concept introduction: The α hydrogen attached to the β- ketoester is acidic in nature and the hydrolysis and decarboxylation of the product obtained by substitution reaction of enolate ion with alkyl halide gives ketone .

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Answer 1

Question

Chapter 23, Problem 23.28P

Interpretation Introduction

(a)

Interpretation: Nabumetone from ethyl acetoacetate is to be synthesized.

Concept introduction: The α hydrogen attached to the β- ketoester is acidic in nature and the hydrolysis and decarboxylation of the product obtained by substitution reaction of enolate ion with alkyl halide gives ketone.

Interpretation Introduction

(b)

Interpretation: The alkyl halide and ketone needed to prepare nabumetone are to be predicted.

Concept introduction: Carbonyl compounds on treatment with a strong base result in alkylation. The reaction is carried out in two steps: first is the removal of proton by base to generate enolate ion. The second step is the attack of nucleophillic enloate on the alkyl halide, displacing the halide and formation of alkylated product takes place via SN2 mechanism.

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In the box below, specify which of the given compounds are very soluble in polar aprotic solvents. You may select more than one compound. Choose one or more: NaCl NH4Cl CH3CH2CH2CH2CH2CN CH3CH2OH hexan-2-one NaOH CH3SCH3

On the following structure, select all of the atoms that could ACCEPT a hydrogen bond. Ignore possible complications of aromaticity. When selecting be sure to click on the center of the atom.

Answer 2

Question

Chapter 23, Problem 23.28P

Interpretation Introduction

(a)

Interpretation: Nabumetone from ethyl acetoacetate is to be synthesized.

Concept introduction: The α hydrogen attached to the β- ketoester is acidic in nature and the hydrolysis and decarboxylation of the product obtained by substitution reaction of enolate ion with alkyl halide gives ketone.

Interpretation Introduction

(b)

Interpretation: The alkyl halide and ketone needed to prepare nabumetone are to be predicted.

Concept introduction: Carbonyl compounds on treatment with a strong base result in alkylation. The reaction is carried out in two steps: first is the removal of proton by base to generate enolate ion. The second step is the attack of nucleophillic enloate on the alkyl halide, displacing the halide and formation of alkylated product takes place via SN2 mechanism.

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Answer 3

Question

Chapter 23, Problem 23.28P

Interpretation Introduction

(a)

Interpretation: Nabumetone from ethyl acetoacetate is to be synthesized.

Concept introduction: The α hydrogen attached to the β- ketoester is acidic in nature and the hydrolysis and decarboxylation of the product obtained by substitution reaction of enolate ion with alkyl halide gives ketone.

Interpretation Introduction

(b)

Interpretation: The alkyl halide and ketone needed to prepare nabumetone are to be predicted.

Concept introduction: Carbonyl compounds on treatment with a strong base result in alkylation. The reaction is carried out in two steps: first is the removal of proton by base to generate enolate ion. The second step is the attack of nucleophillic enloate on the alkyl halide, displacing the halide and formation of alkylated product takes place via SN2 mechanism.

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Answer 4

Question

Chapter 23, Problem 23.28P

Interpretation Introduction

(a)

Interpretation: Nabumetone from ethyl acetoacetate is to be synthesized.

Concept introduction: The α hydrogen attached to the β- ketoester is acidic in nature and the hydrolysis and decarboxylation of the product obtained by substitution reaction of enolate ion with alkyl halide gives ketone.

Interpretation Introduction

(b)

Interpretation: The alkyl halide and ketone needed to prepare nabumetone are to be predicted.

Concept introduction: Carbonyl compounds on treatment with a strong base result in alkylation. The reaction is carried out in two steps: first is the removal of proton by base to generate enolate ion. The second step is the attack of nucleophillic enloate on the alkyl halide, displacing the halide and formation of alkylated product takes place via SN2 mechanism.

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Answer 5

Chapter 23, Problem 23.28P

Interpretation Introduction

(a)

Interpretation: Nabumetone from ethyl acetoacetate is to be synthesized.

Concept introduction: The α hydrogen attached to the β- ketoester is acidic in nature and the hydrolysis and decarboxylation of the product obtained by substitution reaction of enolate ion with alkyl halide gives ketone.

Interpretation Introduction

(b)

Interpretation: The alkyl halide and ketone needed to prepare nabumetone are to be predicted.

Concept introduction: Carbonyl compounds on treatment with a strong base result in alkylation. The reaction is carried out in two steps: first is the removal of proton by base to generate enolate ion. The second step is the attack of nucleophillic enloate on the alkyl halide, displacing the halide and formation of alkylated product takes place via SN2 mechanism.

Answer 6

Chapter 23, Problem 23.28P

Interpretation Introduction

(a)

Interpretation: Nabumetone from ethyl acetoacetate is to be synthesized.

Concept introduction: The α hydrogen attached to the β- ketoester is acidic in nature and the hydrolysis and decarboxylation of the product obtained by substitution reaction of enolate ion with alkyl halide gives ketone.

Answer 7

Chapter 23, Problem 23.28P

Interpretation Introduction

(a)

Interpretation: Nabumetone from ethyl acetoacetate is to be synthesized.

Concept introduction: The α hydrogen attached to the β- ketoester is acidic in nature and the hydrolysis and decarboxylation of the product obtained by substitution reaction of enolate ion with alkyl halide gives ketone.

Answer 8

Interpretation Introduction

(b)

Interpretation: The alkyl halide and ketone needed to prepare nabumetone are to be predicted.

Concept introduction: Carbonyl compounds on treatment with a strong base result in alkylation. The reaction is carried out in two steps: first is the removal of proton by base to generate enolate ion. The second step is the attack of nucleophillic enloate on the alkyl halide, displacing the halide and formation of alkylated product takes place via SN2 mechanism.

Answer 9

Interpretation Introduction

(b)

Interpretation: The alkyl halide and ketone needed to prepare nabumetone are to be predicted.

Concept introduction: Carbonyl compounds on treatment with a strong base result in alkylation. The reaction is carried out in two steps: first is the removal of proton by base to generate enolate ion. The second step is the attack of nucleophillic enloate on the alkyl halide, displacing the halide and formation of alkylated product takes place via SN2 mechanism.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 23 - Problem 23.1 Draw the enol or keto tautomer(s) of...Ch. 23 - Prob. 23.2P Ch. 23 - Problem 23.3 When phenylacetaldehyde is dissolved...Ch. 23 - Prob. 23.4P Ch. 23 - Problem 23.5 Which bonds in the following...Ch. 23 - Prob. 23.6P Ch. 23 - Prob. 23.7P Ch. 23 - Prob. 23.8P Ch. 23 - Prob. 23.9P Ch. 23 - Prob. 23.10P

(a) Interpretation: Nabumetone from ethyl acetoacetate is to be synthesized. Concept introduction: The α hydrogen attached to the β- ketoester is acidic in nature and the hydrolysis and decarboxylation of the product obtained by substitution reaction of enolate ion with alkyl halide gives ketone .

Solution Summary: The author explains the synthesis of nabumetone from ethyl acetoacetate.

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Chapter 23 Solutions

Solution Summary: The author explains the synthesis of nabumetone from ethyl acetoacetate.

Concept explainers

(a) Interpretation: Nabumetone from ethyl acetoacetate is to be synthesized. Concept introduction: The α hydrogen attached to the β- ketoester is acidic in nature and the hydrolysis and decarboxylation of the product obtained by substitution reaction of enolate ion with alkyl halide gives ketone.

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Chapter 23 Solutions