A compound A (C 11 H 14 O 3 ) in insoluble in base and gives an isomeric compound B when heated strongly. Compound B gives a sodium salt when treated with NaOH.Treatment of the sodium salt of B with dimethyl sulfate gives a new compound C (C 12 H 16 O 3 ) that is identical in all respects to a natural product elemicin .Ozonolysis of elemicin followed by oxidation gives the carboxylic acid D .Structures for compounds A, B, C are to be stated. Concept introduction: Sigmatropic reaction can be described as the migration of allylic sigma bond at one end of the π-electron system to the other end of the π-electron system as an uncatalyzed intramolecular reaction. The formation of sigma bond at 3, 3-position of a 1, 5-diene is called as cope rearrangement. Notably, [3, 3] sigmatropic reaction of allyl vinyl ether is termed as Claisen rearrangement.

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Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 28, Problem 28.45AP

Interpretation Introduction

Interpretation:

A compound A (C₁₁H₁₄O₃) in insoluble in base and gives an isomeric compound B when heated strongly. Compound B gives a sodium salt when treated with NaOH.Treatment of the sodium salt of B with dimethyl sulfate gives a new compound C (C₁₂H₁₆O₃) that is identical in all respects to a natural product elemicin.Ozonolysis of elemicin followed by oxidation gives the carboxylic acid D.Structures for compounds A, B, C are to be stated.

Concept introduction:

Sigmatropic reaction can be described as the migration of allylic sigma bond at one end of the π-electron system to the other end of the π-electron system as an uncatalyzed intramolecular reaction. The formation of sigma bond at 3, 3-position of a 1, 5-diene is called as cope rearrangement. Notably, [3, 3] sigmatropic reaction of allyl vinyl ether is termed as Claisen rearrangement.

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Answer 2

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Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 28, Problem 28.45AP

Interpretation Introduction

Interpretation:

A compound A (C₁₁H₁₄O₃) in insoluble in base and gives an isomeric compound B when heated strongly. Compound B gives a sodium salt when treated with NaOH.Treatment of the sodium salt of B with dimethyl sulfate gives a new compound C (C₁₂H₁₆O₃) that is identical in all respects to a natural product elemicin.Ozonolysis of elemicin followed by oxidation gives the carboxylic acid D.Structures for compounds A, B, C are to be stated.

Concept introduction:

Sigmatropic reaction can be described as the migration of allylic sigma bond at one end of the π-electron system to the other end of the π-electron system as an uncatalyzed intramolecular reaction. The formation of sigma bond at 3, 3-position of a 1, 5-diene is called as cope rearrangement. Notably, [3, 3] sigmatropic reaction of allyl vinyl ether is termed as Claisen rearrangement.

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Answer 3

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 28, Problem 28.45AP

Interpretation Introduction

Interpretation:

A compound A (C₁₁H₁₄O₃) in insoluble in base and gives an isomeric compound B when heated strongly. Compound B gives a sodium salt when treated with NaOH.Treatment of the sodium salt of B with dimethyl sulfate gives a new compound C (C₁₂H₁₆O₃) that is identical in all respects to a natural product elemicin.Ozonolysis of elemicin followed by oxidation gives the carboxylic acid D.Structures for compounds A, B, C are to be stated.

Concept introduction:

Sigmatropic reaction can be described as the migration of allylic sigma bond at one end of the π-electron system to the other end of the π-electron system as an uncatalyzed intramolecular reaction. The formation of sigma bond at 3, 3-position of a 1, 5-diene is called as cope rearrangement. Notably, [3, 3] sigmatropic reaction of allyl vinyl ether is termed as Claisen rearrangement.

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Answer 4

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 28, Problem 28.45AP

Interpretation Introduction