The structure of phenylalanine as it exists in D 2 O solution is to be stated. Concept introduction: The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7 − 8 ppm .

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Answer 1

Question

Chapter 24, Problem 24.47SP

(a)

Interpretation Introduction

Interpretation:

The structure of phenylalanine as it exists in D2O solution is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

(b)

Interpretation Introduction

Interpretation:

The peaks in the spectrum are to be assigned to the protons in the structure.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

(c)

Interpretation Introduction

Interpretation:

The reason for the absence of −NH2 or −COOH protons in the spectrum is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

(d)

Interpretation Introduction

Interpretation:

The relationship between the two protons that generate nearly mirror-image multiplets at 3.1 and 3.3 is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighbouring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

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Answer 2

Question

Chapter 24, Problem 24.47SP

(a)

Interpretation Introduction

Interpretation:

The structure of phenylalanine as it exists in D2O solution is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

(b)

Interpretation Introduction

Interpretation:

The peaks in the spectrum are to be assigned to the protons in the structure.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

(c)

Interpretation Introduction

Interpretation:

The reason for the absence of −NH2 or −COOH protons in the spectrum is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

(d)

Interpretation Introduction

Interpretation:

The relationship between the two protons that generate nearly mirror-image multiplets at 3.1 and 3.3 is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighbouring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

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Answer 3

Question

Chapter 24, Problem 24.47SP

(a)

Interpretation Introduction

Interpretation:

The structure of phenylalanine as it exists in D2O solution is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

(b)

Interpretation Introduction

Interpretation:

The peaks in the spectrum are to be assigned to the protons in the structure.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

(c)

Interpretation Introduction

Interpretation:

The reason for the absence of −NH2 or −COOH protons in the spectrum is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

(d)

Interpretation Introduction

Interpretation:

The relationship between the two protons that generate nearly mirror-image multiplets at 3.1 and 3.3 is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighbouring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

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Answer 4

Question

Chapter 24, Problem 24.47SP

(a)

Interpretation Introduction

Interpretation:

The structure of phenylalanine as it exists in D2O solution is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

(b)

Interpretation Introduction

Interpretation:

The peaks in the spectrum are to be assigned to the protons in the structure.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

(c)

Interpretation Introduction

Interpretation:

The reason for the absence of −NH2 or −COOH protons in the spectrum is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

(d)

Interpretation Introduction

Interpretation:

The relationship between the two protons that generate nearly mirror-image multiplets at 3.1 and 3.3 is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighbouring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

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Answer 5

Chapter 24, Problem 24.47SP

(a)

Interpretation Introduction

Interpretation:

The structure of phenylalanine as it exists in D2O solution is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

(b)

Interpretation Introduction

Interpretation:

The peaks in the spectrum are to be assigned to the protons in the structure.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

(c)

Interpretation Introduction

Interpretation:

The reason for the absence of −NH2 or −COOH protons in the spectrum is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

(d)

Interpretation Introduction

Interpretation:

The relationship between the two protons that generate nearly mirror-image multiplets at 3.1 and 3.3 is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighbouring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

Answer 6

Chapter 24, Problem 24.47SP

(a)

Interpretation Introduction

Interpretation:

The structure of phenylalanine as it exists in D2O solution is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

Answer 7

Chapter 24, Problem 24.47SP

(a)

Interpretation Introduction

Interpretation:

The structure of phenylalanine as it exists in D2O solution is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

Answer 8

(b)

Interpretation Introduction

Interpretation:

The peaks in the spectrum are to be assigned to the protons in the structure.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

Answer 9

(b)

Interpretation Introduction

Interpretation:

The peaks in the spectrum are to be assigned to the protons in the structure.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

Answer 10

(c)

Interpretation Introduction

Interpretation:

The reason for the absence of −NH2 or −COOH protons in the spectrum is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

Answer 11

(c)

Interpretation Introduction

Interpretation:

The reason for the absence of −NH2 or −COOH protons in the spectrum is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighboring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

Answer 12

(d)

Interpretation Introduction

Interpretation:

The relationship between the two protons that generate nearly mirror-image multiplets at 3.1 and 3.3 is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighbouring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

Answer 13

(d)

Interpretation Introduction

Interpretation:

The relationship between the two protons that generate nearly mirror-image multiplets at 3.1 and 3.3 is to be stated.

Concept introduction:

The peaks in NMR spectrum are due to hydrogen atoms. Different signals are produced from different neighbouring substituents of hydrogen atoms. Information about the structure of a compound is obtained by chemical shifts. Peaks due to aromatic protons occur between 7−8 ppm.

Answer 14

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Answer 15

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Answer 16

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Answer 17

Ch. 24.2A - Draw three-dimensional representations of the...Ch. 24.2A - Prob. 24.2P Ch. 24.2B - The herbicide glyphosate (Roundup) kills plants by...Ch. 24.4 - Draw the structure of the predominant form of a....Ch. 24.4 - Draw the resonance forms of a protonated guanidino...Ch. 24.4 - Although tryptophan contains a heterocyclic amine,...Ch. 24.4 - Prob. 24.7P Ch. 24.4 - Prob. 24.8P Ch. 24.5A - Show how the following amino acids might be formed...Ch. 24.5B - Prob. 24.10P

Solution Summary: The author explains the structure of phenylalanine in D_TextO solution. The peaks in NMR spectrum are due to hydrogen atoms.

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Chapter 24 Solutions