(a) Interpretation: The reason for the conclusion that free radicals do not rearrange is to be stated. Concept introduction: Halogens react with alkanes in the presence of heat or light to form alkyl halides . This is known as the halogenation reaction. This is a free radical substitution reaction. In this, the halogen substitutes the hydrogen atom from C − H sigma bond of the alkane.

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Answer 1

Question

Chapter 9, Problem 9.81AP

Interpretation Introduction

(a)

Interpretation:

The reason for the conclusion that free radicals do not rearrange is to be stated.

Concept introduction:

Halogens react with alkanes in the presence of heat or light to form alkyl halides. This is known as the halogenation reaction. This is a free radical substitution reaction. In this, the halogen substitutes the hydrogen atom from C−H sigma bond of the alkane.

Interpretation Introduction

(b)

Interpretation:

The way in which the relative percentages of A and B is compared with the percentages of tert- butyl chloride and isobutyl chloride is to be stated. The explanation for the corresponding answer is to be stated.

Concept introduction:

Halogens react with alkanes in the presence of heat or light to form alkyl halides. This is known as the halogenation reaction. This is a free radical substitution reaction. In this the halogen substitutes the hydrogen atom from C−H sigma bond of the alkane.

Interpretation Introduction

(c)

Interpretation:

The method to prepare the isotopically labeled starting material, isobutene -2d is to be predicted.

Concept introduction:

Grignard reagents are organometallic compounds which are prepared using alkyl halides in the presence of magnesium metal in dry ether. These reagents act as strong nucleophiles and bases. Grignard reagent undergoes several reactions with compounds such as alcohol, water, ketone, and aldehydes.

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(c) Diels-Alder reactions are a highly effective way to synthesise stereospecifically fused cyclic structures. (1) Using suitable diagrams, curly arrows and/or reaction schemes, explain why the reaction between cyclopentadiene and maleic anhydride favours formation of the endo product. (ii) If the reaction in part (i) were conducted using furan instead of cyclopentadiene, what difference would you observe in the product/s, with respect to their stereochemistry? (No need to draw reaction mechanisms) (iii) Draw the stereospecific 3D structure of the product formed during the Diels-Alder reaction below. (No need to show the reaction mechanism) Нeat Br Br (Figure Q11ciii)

The Diels–Alder Reaction – A [4+2] Cycloaddition Experiment. (a) Explain why the endo-rule is not obeyed when furan is used as the diene. Use chemical structures and models to support your answer.

C(CH3)2OH C(CH3):X +H20 where (X=F, CI, Br, I) give reaction with each of halogen as well determine with which halogen substitution reaction is more favorable and feasible and give reason of its feasibility?

Answer 2

Question

Chapter 9, Problem 9.81AP

Interpretation Introduction

(a)

Interpretation:

The reason for the conclusion that free radicals do not rearrange is to be stated.

Concept introduction:

Halogens react with alkanes in the presence of heat or light to form alkyl halides. This is known as the halogenation reaction. This is a free radical substitution reaction. In this, the halogen substitutes the hydrogen atom from C−H sigma bond of the alkane.

Interpretation Introduction

(b)

Interpretation:

The way in which the relative percentages of A and B is compared with the percentages of tert- butyl chloride and isobutyl chloride is to be stated. The explanation for the corresponding answer is to be stated.

Concept introduction:

Halogens react with alkanes in the presence of heat or light to form alkyl halides. This is known as the halogenation reaction. This is a free radical substitution reaction. In this the halogen substitutes the hydrogen atom from C−H sigma bond of the alkane.

Interpretation Introduction

(c)

Interpretation:

The method to prepare the isotopically labeled starting material, isobutene -2d is to be predicted.

Concept introduction:

Grignard reagents are organometallic compounds which are prepared using alkyl halides in the presence of magnesium metal in dry ether. These reagents act as strong nucleophiles and bases. Grignard reagent undergoes several reactions with compounds such as alcohol, water, ketone, and aldehydes.

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Answer 3

Question

Chapter 9, Problem 9.81AP

Interpretation Introduction

(a)

Interpretation:

The reason for the conclusion that free radicals do not rearrange is to be stated.

Concept introduction:

Halogens react with alkanes in the presence of heat or light to form alkyl halides. This is known as the halogenation reaction. This is a free radical substitution reaction. In this, the halogen substitutes the hydrogen atom from C−H sigma bond of the alkane.

Interpretation Introduction

(b)

Interpretation:

The way in which the relative percentages of A and B is compared with the percentages of tert- butyl chloride and isobutyl chloride is to be stated. The explanation for the corresponding answer is to be stated.

Concept introduction:

Halogens react with alkanes in the presence of heat or light to form alkyl halides. This is known as the halogenation reaction. This is a free radical substitution reaction. In this the halogen substitutes the hydrogen atom from C−H sigma bond of the alkane.

Interpretation Introduction

(c)

Interpretation:

The method to prepare the isotopically labeled starting material, isobutene -2d is to be predicted.

Concept introduction:

Grignard reagents are organometallic compounds which are prepared using alkyl halides in the presence of magnesium metal in dry ether. These reagents act as strong nucleophiles and bases. Grignard reagent undergoes several reactions with compounds such as alcohol, water, ketone, and aldehydes.

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Answer 4

Question

Chapter 9, Problem 9.81AP

Interpretation Introduction

(a)

Interpretation:

The reason for the conclusion that free radicals do not rearrange is to be stated.

Concept introduction:

Halogens react with alkanes in the presence of heat or light to form alkyl halides. This is known as the halogenation reaction. This is a free radical substitution reaction. In this, the halogen substitutes the hydrogen atom from C−H sigma bond of the alkane.

Interpretation Introduction

(b)

Interpretation:

The way in which the relative percentages of A and B is compared with the percentages of tert- butyl chloride and isobutyl chloride is to be stated. The explanation for the corresponding answer is to be stated.

Concept introduction:

Halogens react with alkanes in the presence of heat or light to form alkyl halides. This is known as the halogenation reaction. This is a free radical substitution reaction. In this the halogen substitutes the hydrogen atom from C−H sigma bond of the alkane.

Interpretation Introduction

(c)

Interpretation:

The method to prepare the isotopically labeled starting material, isobutene -2d is to be predicted.

Concept introduction:

Grignard reagents are organometallic compounds which are prepared using alkyl halides in the presence of magnesium metal in dry ether. These reagents act as strong nucleophiles and bases. Grignard reagent undergoes several reactions with compounds such as alcohol, water, ketone, and aldehydes.

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Answer 5

Chapter 9, Problem 9.81AP

Interpretation Introduction

(a)

Interpretation:

The reason for the conclusion that free radicals do not rearrange is to be stated.

Concept introduction:

Halogens react with alkanes in the presence of heat or light to form alkyl halides. This is known as the halogenation reaction. This is a free radical substitution reaction. In this, the halogen substitutes the hydrogen atom from C−H sigma bond of the alkane.

Interpretation Introduction

(b)

Interpretation:

The way in which the relative percentages of A and B is compared with the percentages of tert- butyl chloride and isobutyl chloride is to be stated. The explanation for the corresponding answer is to be stated.

Concept introduction:

Halogens react with alkanes in the presence of heat or light to form alkyl halides. This is known as the halogenation reaction. This is a free radical substitution reaction. In this the halogen substitutes the hydrogen atom from C−H sigma bond of the alkane.

Interpretation Introduction

(c)

Interpretation:

The method to prepare the isotopically labeled starting material, isobutene -2d is to be predicted.

Concept introduction:

Grignard reagents are organometallic compounds which are prepared using alkyl halides in the presence of magnesium metal in dry ether. These reagents act as strong nucleophiles and bases. Grignard reagent undergoes several reactions with compounds such as alcohol, water, ketone, and aldehydes.

Answer 6

Chapter 9, Problem 9.81AP

Interpretation Introduction

(a)

Interpretation:

The reason for the conclusion that free radicals do not rearrange is to be stated.

Concept introduction:

Halogens react with alkanes in the presence of heat or light to form alkyl halides. This is known as the halogenation reaction. This is a free radical substitution reaction. In this, the halogen substitutes the hydrogen atom from C−H sigma bond of the alkane.

Answer 7

Chapter 9, Problem 9.81AP

Interpretation Introduction

(a)

Interpretation:

The reason for the conclusion that free radicals do not rearrange is to be stated.

Concept introduction:

Halogens react with alkanes in the presence of heat or light to form alkyl halides. This is known as the halogenation reaction. This is a free radical substitution reaction. In this, the halogen substitutes the hydrogen atom from C−H sigma bond of the alkane.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The way in which the relative percentages of A and B is compared with the percentages of tert- butyl chloride and isobutyl chloride is to be stated. The explanation for the corresponding answer is to be stated.

Concept introduction:

Halogens react with alkanes in the presence of heat or light to form alkyl halides. This is known as the halogenation reaction. This is a free radical substitution reaction. In this the halogen substitutes the hydrogen atom from C−H sigma bond of the alkane.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The way in which the relative percentages of A and B is compared with the percentages of tert- butyl chloride and isobutyl chloride is to be stated. The explanation for the corresponding answer is to be stated.

Concept introduction:

Halogens react with alkanes in the presence of heat or light to form alkyl halides. This is known as the halogenation reaction. This is a free radical substitution reaction. In this the halogen substitutes the hydrogen atom from C−H sigma bond of the alkane.

Answer 10

Interpretation Introduction

(c)

Interpretation:

The method to prepare the isotopically labeled starting material, isobutene -2d is to be predicted.

Concept introduction:

Grignard reagents are organometallic compounds which are prepared using alkyl halides in the presence of magnesium metal in dry ether. These reagents act as strong nucleophiles and bases. Grignard reagent undergoes several reactions with compounds such as alcohol, water, ketone, and aldehydes.

Answer 11

Interpretation Introduction

(c)

Interpretation:

The method to prepare the isotopically labeled starting material, isobutene -2d is to be predicted.

Concept introduction:

Grignard reagents are organometallic compounds which are prepared using alkyl halides in the presence of magnesium metal in dry ether. These reagents act as strong nucleophiles and bases. Grignard reagent undergoes several reactions with compounds such as alcohol, water, ketone, and aldehydes.

Answer 12

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Answer 15

Ch. 9 - Prob. 9.1P Ch. 9 - Prob. 9.2P Ch. 9 - Prob. 9.3P Ch. 9 - Prob. 9.4P Ch. 9 - Prob. 9.5P Ch. 9 - Prob. 9.6P Ch. 9 - Prob. 9.7P Ch. 9 - Prob. 9.8P Ch. 9 - Prob. 9.9P Ch. 9 - Prob. 9.10P

Solution Summary: The author explains the halogenation reaction, which is a free radical substitution reaction.

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