(a) Interpretation: The mechanism for the formation of the by-product obtained in the reaction R − C ≡ N → H 2 /catalyst RCH 2 NH 2 + ( RCH 2 ) 2 NH is to be stated. Concept introduction: The chemical reaction in which hydrogen molecule is used in the presence of nickel as a catalyst to reduce an organic compound is known as hydrogenation reaction. Hydrogenation is basically used to add the pair of hydrogen atoms to an alkene .

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Answer 1

Question

Chapter 21, Problem 21.23P

Interpretation Introduction

(a)

Interpretation:

The mechanism for the formation of the by-product obtained in the reaction R−C≡N→H2/catalystRCH2NH2+(RCH2)2NH is to be stated.

Concept introduction:

The chemical reaction in which hydrogen molecule is used in the presence of nickel as a catalyst to reduce an organic compound is known as hydrogenation reaction. Hydrogenation is basically used to add the pair of hydrogen atoms to an alkene.

Interpretation Introduction

(b)

Interpretation:

The reason as to why ammonia added to the reaction mixture prevents the formation of by-product is to be stated.

Concept introduction:

The chemical reaction in which hydrogen molecule is used in the presence of nickel as a catalyst to reduce an organic compound is known as hydrogenation reaction. Hydrogenation is basically used to add the pair of hydrogen atoms to an alkene.

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1. Calculate the accurate monoisotopic mass (using all 1H, 12C, 14N, 160 and 35CI) for your product using the table in your lab manual. Don't include the Cl, since you should only have [M+H]*. Compare this to the value you see on the LC-MS printout. How much different are they? 2. There are four isotopic peaks for the [M+H]* ion at m/z 240, 241, 242 and 243. For one point of extra credit, explain what each of these is and why they are present. 3. There is a fragment ion at m/z 184. For one point of extra credit, identify this fragment and confirm by calculating the accurate monoisotopic mass. 4. The UV spectrum is also at the bottom of your printout. For one point of extra credit, look up the UV spectrum of bupropion on Google Images and compare to your spectrum. Do they match? Cite your source. 5. For most of you, there will be a second chromatographic peak whose m/z is 74 (to a round number). For one point of extra credit, see if you can identify this molecule as well and confirm by…

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Answer 2

Question

Chapter 21, Problem 21.23P

Interpretation Introduction

(a)

Interpretation:

The mechanism for the formation of the by-product obtained in the reaction R−C≡N→H2/catalystRCH2NH2+(RCH2)2NH is to be stated.

Concept introduction:

The chemical reaction in which hydrogen molecule is used in the presence of nickel as a catalyst to reduce an organic compound is known as hydrogenation reaction. Hydrogenation is basically used to add the pair of hydrogen atoms to an alkene.

Interpretation Introduction

(b)

Interpretation:

The reason as to why ammonia added to the reaction mixture prevents the formation of by-product is to be stated.

Concept introduction:

The chemical reaction in which hydrogen molecule is used in the presence of nickel as a catalyst to reduce an organic compound is known as hydrogenation reaction. Hydrogenation is basically used to add the pair of hydrogen atoms to an alkene.

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Answer 3

Question

Chapter 21, Problem 21.23P

Interpretation Introduction

(a)

Interpretation:

The mechanism for the formation of the by-product obtained in the reaction R−C≡N→H2/catalystRCH2NH2+(RCH2)2NH is to be stated.

Concept introduction:

The chemical reaction in which hydrogen molecule is used in the presence of nickel as a catalyst to reduce an organic compound is known as hydrogenation reaction. Hydrogenation is basically used to add the pair of hydrogen atoms to an alkene.

Interpretation Introduction

(b)

Interpretation:

The reason as to why ammonia added to the reaction mixture prevents the formation of by-product is to be stated.

Concept introduction:

The chemical reaction in which hydrogen molecule is used in the presence of nickel as a catalyst to reduce an organic compound is known as hydrogenation reaction. Hydrogenation is basically used to add the pair of hydrogen atoms to an alkene.

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Answer 4

Question

Chapter 21, Problem 21.23P

Interpretation Introduction

(a)

Interpretation:

The mechanism for the formation of the by-product obtained in the reaction R−C≡N→H2/catalystRCH2NH2+(RCH2)2NH is to be stated.

Concept introduction:

The chemical reaction in which hydrogen molecule is used in the presence of nickel as a catalyst to reduce an organic compound is known as hydrogenation reaction. Hydrogenation is basically used to add the pair of hydrogen atoms to an alkene.

Interpretation Introduction

(b)

Interpretation:

The reason as to why ammonia added to the reaction mixture prevents the formation of by-product is to be stated.

Concept introduction:

The chemical reaction in which hydrogen molecule is used in the presence of nickel as a catalyst to reduce an organic compound is known as hydrogenation reaction. Hydrogenation is basically used to add the pair of hydrogen atoms to an alkene.

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Answer 5

Chapter 21, Problem 21.23P

Interpretation Introduction

(a)

Interpretation:

The mechanism for the formation of the by-product obtained in the reaction R−C≡N→H2/catalystRCH2NH2+(RCH2)2NH is to be stated.

Concept introduction:

The chemical reaction in which hydrogen molecule is used in the presence of nickel as a catalyst to reduce an organic compound is known as hydrogenation reaction. Hydrogenation is basically used to add the pair of hydrogen atoms to an alkene.

Interpretation Introduction

(b)

Interpretation:

The reason as to why ammonia added to the reaction mixture prevents the formation of by-product is to be stated.

Concept introduction:

The chemical reaction in which hydrogen molecule is used in the presence of nickel as a catalyst to reduce an organic compound is known as hydrogenation reaction. Hydrogenation is basically used to add the pair of hydrogen atoms to an alkene.

Answer 6

Chapter 21, Problem 21.23P

Interpretation Introduction

(a)

Interpretation:

The mechanism for the formation of the by-product obtained in the reaction R−C≡N→H2/catalystRCH2NH2+(RCH2)2NH is to be stated.

Concept introduction:

The chemical reaction in which hydrogen molecule is used in the presence of nickel as a catalyst to reduce an organic compound is known as hydrogenation reaction. Hydrogenation is basically used to add the pair of hydrogen atoms to an alkene.

Answer 7

Chapter 21, Problem 21.23P

Interpretation Introduction

(a)

Interpretation:

The mechanism for the formation of the by-product obtained in the reaction R−C≡N→H2/catalystRCH2NH2+(RCH2)2NH is to be stated.

Concept introduction:

The chemical reaction in which hydrogen molecule is used in the presence of nickel as a catalyst to reduce an organic compound is known as hydrogenation reaction. Hydrogenation is basically used to add the pair of hydrogen atoms to an alkene.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The reason as to why ammonia added to the reaction mixture prevents the formation of by-product is to be stated.

Concept introduction:

The chemical reaction in which hydrogen molecule is used in the presence of nickel as a catalyst to reduce an organic compound is known as hydrogenation reaction. Hydrogenation is basically used to add the pair of hydrogen atoms to an alkene.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The reason as to why ammonia added to the reaction mixture prevents the formation of by-product is to be stated.

Concept introduction:

The chemical reaction in which hydrogen molecule is used in the presence of nickel as a catalyst to reduce an organic compound is known as hydrogenation reaction. Hydrogenation is basically used to add the pair of hydrogen atoms to an alkene.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 21 - Prob. 21.1P Ch. 21 - Prob. 21.2P Ch. 21 - Prob. 21.3P Ch. 21 - Prob. 21.4P Ch. 21 - Prob. 21.5P Ch. 21 - Prob. 21.6P Ch. 21 - Prob. 21.7P Ch. 21 - Prob. 21.8P Ch. 21 - Prob. 21.9P Ch. 21 - Prob. 21.10P

Solution Summary: The author explains the hydrogenation reaction in which hydrogen molecule is used in the presence of nickel as a catalyst to reduce an organic compound.

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Chapter 21 Solutions