The steps that are sufficiently exothermic to drive the reactions to completion in the hydrolysis mechanisms (both acidic and basic) of N , N -dimethylacetamide are to be stated. Concept introduction: The acidic hydrolysis of an amide comprises two stages. The first half is an acid catalyzed addition of the nucleophile (water). The second half is an acid catalyzed elimination of the leaving group. The basic hydrolysis of an amide comprises three steps. The first step is addition of the nucleophile. The second step is elimination of the leaving group. The third step is proton transfer.

Question

Relative Intensity Part VI. consider the multi-step reaction below for compounds A, B, and C. These compounds were subjected to mass spectrometric analysis and the following spectra for A, B, and C was obtained. Draw the structure of B and C and match all three compounds to the correct spectra. Relative Intensity Relative Intensity 100 HS-NJ-0547 80 60 31 20 S1 84 M+ absent 10 30 40 50 60 70 80 90 100 100- MS2016-05353CM 80- 60 40 20 135 137 S2 164 166 0-m 25 50 75 100 125 150 m/z 60 100 MS-NJ-09-43 40 20 20 80 45 S3 25 50 75 100 125 150 175 m/z

Answer 1

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 21.7C, Problem 21.21P

Interpretation Introduction

Interpretation:

The steps that are sufficiently exothermic to drive the reactions to completion in the hydrolysis mechanisms (both acidic and basic) of N,N-dimethylacetamide are to be stated.

Concept introduction:

The acidic hydrolysis of an amide comprises two stages. The first half is an acid catalyzed addition of the nucleophile (water). The second half is an acid catalyzed elimination of the leaving group.

The basic hydrolysis of an amide comprises three steps. The first step is addition of the nucleophile. The second step is elimination of the leaving group. The third step is proton transfer.

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Relative Intensity Part VI. consider the multi-step reaction below for compounds A, B, and C. These compounds were subjected to mass spectrometric analysis and the following spectra for A, B, and C was obtained. Draw the structure of B and C and match all three compounds to the correct spectra. Relative Intensity Relative Intensity 100 HS-NJ-0547 80 60 31 20 S1 84 M+ absent 10 30 40 50 60 70 80 90 100 100- MS2016-05353CM 80- 60 40 20 135 137 S2 164 166 0-m 25 50 75 100 125 150 m/z 60 100 MS-NJ-09-43 40 20 20 80 45 S3 25 50 75 100 125 150 175 m/z

Part II. Given two isomers: 2-methylpentane (A) and 2,2-dimethyl butane (B) answer the following: (a) match structures of isomers given their mass spectra below (spectra A and spectra B) (b) Draw the fragments given the following prominent peaks from each spectrum: Spectra A m/2 =43 and 1/2-57 spectra B m/2 = 43 (c) why is 1/2=57 peak in spectrum A more intense compared to the same peak in spectrum B. Relative abundance Relative abundance 100 A 50 29 29 0 10 -0 -0 100 B 50 720 30 41 43 57 71 4-0 40 50 60 70 m/z 43 57 8-0 m/z = 86 M 90 100 71 m/z = 86 M -O 0 10 20 30 40 50 60 70 80 -88 m/z 90 100

Part IV. C6H5 CH2CH2OH is an aromatic compound which was subjected to Electron Ionization - mass spectrometry (El-MS) analysis. Prominent m/2 values: m/2 = 104 and m/2 = 9) was obtained. Draw the structures of these fragments.

Answer 2

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 21.7C, Problem 21.21P

Interpretation Introduction

Interpretation:

The steps that are sufficiently exothermic to drive the reactions to completion in the hydrolysis mechanisms (both acidic and basic) of N,N-dimethylacetamide are to be stated.

Concept introduction:

The acidic hydrolysis of an amide comprises two stages. The first half is an acid catalyzed addition of the nucleophile (water). The second half is an acid catalyzed elimination of the leaving group.

The basic hydrolysis of an amide comprises three steps. The first step is addition of the nucleophile. The second step is elimination of the leaving group. The third step is proton transfer.

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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 21.7C, Problem 21.21P

Interpretation Introduction

Interpretation:

The steps that are sufficiently exothermic to drive the reactions to completion in the hydrolysis mechanisms (both acidic and basic) of N,N-dimethylacetamide are to be stated.

Concept introduction:

The acidic hydrolysis of an amide comprises two stages. The first half is an acid catalyzed addition of the nucleophile (water). The second half is an acid catalyzed elimination of the leaving group.

The basic hydrolysis of an amide comprises three steps. The first step is addition of the nucleophile. The second step is elimination of the leaving group. The third step is proton transfer.

Expert Solution & Answer

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Check out sample textbook solution

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 21.7C, Problem 21.21P

Interpretation Introduction