(a) Interpretation: The structure of the conjugate acid of 4 − ( dimethylamino ) pyridine is to be drawn. Along with the help of resonance structure, the reason as to why 4 − ( dimethylamino ) pyridine is more basic than pyridine is to be stated. Concept introduction: Pyridine is a six-membered heterocyclic aromatic ring where a nitrogen atom is placed instead of a carbon atom. The DMAP molecule is a derivative of pyridine molecule. It is used as a base and a nucleophilic catalyst. Electron density and basicity are directly proportional to each other.

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Answer 1

Question

Chapter 26, Problem 26.7P

Interpretation Introduction

(a)

Interpretation:

The structure of the conjugate acid of 4−(dimethylamino)pyridine is to be drawn. Along with the help of resonance structure, the reason as to why 4−(dimethylamino)pyridine is more basic than pyridine is to be stated.

Concept introduction:

Pyridine is a six-membered heterocyclic aromatic ring where a nitrogen atom is placed instead of a carbon atom. The DMAP molecule is a derivative of pyridine molecule. It is used as a base and a nucleophilic catalyst. Electron density and basicity are directly proportional to each other.

Interpretation Introduction

(b)

Interpretation:

The product obtained from the reaction of 4−(dimethylamino)pyridine with CH3I is to be stated.

Concept introduction:

Pyridine is a six-membered heterocyclic aromatic ring where a nitrogen atom is placed instead of a carbon atom. The DMAP molecule is a derivative of pyridine molecule. It is used as a base and a nucleophilic catalyst. Electron density and basicity are directly proportional to each other.

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Transmitance 3. Which one of the following compounds corresponds to this IR spectrum? Point out the absorption band(s) that helped you decide. OH H3C OH H₂C CH3 H3C CH3 H3C INFRARED SPECTRUM 0.8- 0.6 0.4- 0.2 3000 2000 1000 Wavenumber (cm-1) 4. Consider this compound: H3C On the structure above, label the different types of H's as A, B, C, etc. In table form, list the labeled signals, and for each one state the number of hydrogens, their shifts, and the splitting you would observe for these hydrogens in the ¹H NMR spectrum. Label # of hydrogens splitting Shift (2)

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Answer 2

Question

Chapter 26, Problem 26.7P

Interpretation Introduction

(a)

Interpretation:

The structure of the conjugate acid of 4−(dimethylamino)pyridine is to be drawn. Along with the help of resonance structure, the reason as to why 4−(dimethylamino)pyridine is more basic than pyridine is to be stated.

Concept introduction:

Pyridine is a six-membered heterocyclic aromatic ring where a nitrogen atom is placed instead of a carbon atom. The DMAP molecule is a derivative of pyridine molecule. It is used as a base and a nucleophilic catalyst. Electron density and basicity are directly proportional to each other.

Interpretation Introduction

(b)

Interpretation:

The product obtained from the reaction of 4−(dimethylamino)pyridine with CH3I is to be stated.

Concept introduction:

Pyridine is a six-membered heterocyclic aromatic ring where a nitrogen atom is placed instead of a carbon atom. The DMAP molecule is a derivative of pyridine molecule. It is used as a base and a nucleophilic catalyst. Electron density and basicity are directly proportional to each other.

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Answer 3

Question

Chapter 26, Problem 26.7P

Interpretation Introduction

(a)

Interpretation:

The structure of the conjugate acid of 4−(dimethylamino)pyridine is to be drawn. Along with the help of resonance structure, the reason as to why 4−(dimethylamino)pyridine is more basic than pyridine is to be stated.

Concept introduction:

Pyridine is a six-membered heterocyclic aromatic ring where a nitrogen atom is placed instead of a carbon atom. The DMAP molecule is a derivative of pyridine molecule. It is used as a base and a nucleophilic catalyst. Electron density and basicity are directly proportional to each other.

Interpretation Introduction

(b)

Interpretation:

The product obtained from the reaction of 4−(dimethylamino)pyridine with CH3I is to be stated.

Concept introduction:

Pyridine is a six-membered heterocyclic aromatic ring where a nitrogen atom is placed instead of a carbon atom. The DMAP molecule is a derivative of pyridine molecule. It is used as a base and a nucleophilic catalyst. Electron density and basicity are directly proportional to each other.

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Answer 4

Question

Chapter 26, Problem 26.7P

Interpretation Introduction

(a)

Interpretation:

The structure of the conjugate acid of 4−(dimethylamino)pyridine is to be drawn. Along with the help of resonance structure, the reason as to why 4−(dimethylamino)pyridine is more basic than pyridine is to be stated.

Concept introduction:

Pyridine is a six-membered heterocyclic aromatic ring where a nitrogen atom is placed instead of a carbon atom. The DMAP molecule is a derivative of pyridine molecule. It is used as a base and a nucleophilic catalyst. Electron density and basicity are directly proportional to each other.

Interpretation Introduction

(b)

Interpretation:

The product obtained from the reaction of 4−(dimethylamino)pyridine with CH3I is to be stated.

Concept introduction:

Pyridine is a six-membered heterocyclic aromatic ring where a nitrogen atom is placed instead of a carbon atom. The DMAP molecule is a derivative of pyridine molecule. It is used as a base and a nucleophilic catalyst. Electron density and basicity are directly proportional to each other.

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Answer 5

Chapter 26, Problem 26.7P

Interpretation Introduction

(a)

Interpretation:

The structure of the conjugate acid of 4−(dimethylamino)pyridine is to be drawn. Along with the help of resonance structure, the reason as to why 4−(dimethylamino)pyridine is more basic than pyridine is to be stated.

Concept introduction:

Pyridine is a six-membered heterocyclic aromatic ring where a nitrogen atom is placed instead of a carbon atom. The DMAP molecule is a derivative of pyridine molecule. It is used as a base and a nucleophilic catalyst. Electron density and basicity are directly proportional to each other.

Interpretation Introduction

(b)

Interpretation:

The product obtained from the reaction of 4−(dimethylamino)pyridine with CH3I is to be stated.

Concept introduction:

Pyridine is a six-membered heterocyclic aromatic ring where a nitrogen atom is placed instead of a carbon atom. The DMAP molecule is a derivative of pyridine molecule. It is used as a base and a nucleophilic catalyst. Electron density and basicity are directly proportional to each other.

Answer 6

Chapter 26, Problem 26.7P

Interpretation Introduction

(a)

Interpretation:

The structure of the conjugate acid of 4−(dimethylamino)pyridine is to be drawn. Along with the help of resonance structure, the reason as to why 4−(dimethylamino)pyridine is more basic than pyridine is to be stated.

Concept introduction:

Pyridine is a six-membered heterocyclic aromatic ring where a nitrogen atom is placed instead of a carbon atom. The DMAP molecule is a derivative of pyridine molecule. It is used as a base and a nucleophilic catalyst. Electron density and basicity are directly proportional to each other.

Answer 7

Chapter 26, Problem 26.7P

Interpretation Introduction

(a)

Interpretation:

The structure of the conjugate acid of 4−(dimethylamino)pyridine is to be drawn. Along with the help of resonance structure, the reason as to why 4−(dimethylamino)pyridine is more basic than pyridine is to be stated.

Concept introduction:

Pyridine is a six-membered heterocyclic aromatic ring where a nitrogen atom is placed instead of a carbon atom. The DMAP molecule is a derivative of pyridine molecule. It is used as a base and a nucleophilic catalyst. Electron density and basicity are directly proportional to each other.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The product obtained from the reaction of 4−(dimethylamino)pyridine with CH3I is to be stated.

Concept introduction:

Pyridine is a six-membered heterocyclic aromatic ring where a nitrogen atom is placed instead of a carbon atom. The DMAP molecule is a derivative of pyridine molecule. It is used as a base and a nucleophilic catalyst. Electron density and basicity are directly proportional to each other.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The product obtained from the reaction of 4−(dimethylamino)pyridine with CH3I is to be stated.

Concept introduction:

Pyridine is a six-membered heterocyclic aromatic ring where a nitrogen atom is placed instead of a carbon atom. The DMAP molecule is a derivative of pyridine molecule. It is used as a base and a nucleophilic catalyst. Electron density and basicity are directly proportional to each other.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 26 - Prob. 26.1P Ch. 26 - Prob. 26.2P Ch. 26 - Prob. 26.3P Ch. 26 - Prob. 26.4P Ch. 26 - Prob. 26.5P Ch. 26 - Prob. 26.6P Ch. 26 - Prob. 26.7P Ch. 26 - Prob. 26.8P Ch. 26 - Prob. 26.9P Ch. 26 - Prob. 26.10P

Solution Summary: The author explains the structure of the conjugate acid of 4-(dimethylamino), which is a derivative of pyridine molecule.

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Chapter 26 Solutions