The reason for mechanism shown is inconsistent that diastereomer of compound one gives E-isomer has to be explained. Concept Introduction: Elimination reaction: In this reaction, two substituents are removed from the substrate to give the product in presence of base. Elimination of compound in presence of bulky base leads to less substituted alkene , in presence of strong base (not bulky) leads to more substituted alkene. A general elimination E2 mechanism is given as,

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Answer 1

Question

Chapter 7, Problem 97IP

(a)

Interpretation Introduction

Interpretation:

The reason for mechanism shown is inconsistent that diastereomer of compound one gives E-isomer has to be explained.

Concept Introduction:

Elimination reaction: In this reaction, two substituents are removed from the substrate to give the product in presence of base. Elimination of compound in presence of bulky base leads to less substituted alkene, in presence of strong base (not bulky) leads to more substituted alkene. A general elimination E2 mechanism is given as,

(b)

Interpretation Introduction

Interpretation:

The reaction has to be classified and explained as stereo selective or stereospecific.

Concept Introduction:

Stereoselective: A stereoselective reaction where only one stereoisomer reacts among mixture of stereoisomers reacts. This reaction gives two or more stereoisomers but produces almost only one stereoisomer product.

Stereospecific: In this reaction, one stereoisomer of reactant gives one specific stereoisomer product and different stereoisomer of same reactant give its corresponding stereoisomer of same product. The stereochemistry of product depends on stereochemistry of reactants.

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Answer 2

Question

Chapter 7, Problem 97IP

(a)

Interpretation Introduction

Interpretation:

The reason for mechanism shown is inconsistent that diastereomer of compound one gives E-isomer has to be explained.

Concept Introduction:

Elimination reaction: In this reaction, two substituents are removed from the substrate to give the product in presence of base. Elimination of compound in presence of bulky base leads to less substituted alkene, in presence of strong base (not bulky) leads to more substituted alkene. A general elimination E2 mechanism is given as,

(b)

Interpretation Introduction

Interpretation:

The reaction has to be classified and explained as stereo selective or stereospecific.

Concept Introduction:

Stereoselective: A stereoselective reaction where only one stereoisomer reacts among mixture of stereoisomers reacts. This reaction gives two or more stereoisomers but produces almost only one stereoisomer product.

Stereospecific: In this reaction, one stereoisomer of reactant gives one specific stereoisomer product and different stereoisomer of same reactant give its corresponding stereoisomer of same product. The stereochemistry of product depends on stereochemistry of reactants.

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Answer 3

Question

Chapter 7, Problem 97IP

(a)

Interpretation Introduction

Interpretation:

The reason for mechanism shown is inconsistent that diastereomer of compound one gives E-isomer has to be explained.

Concept Introduction:

Elimination reaction: In this reaction, two substituents are removed from the substrate to give the product in presence of base. Elimination of compound in presence of bulky base leads to less substituted alkene, in presence of strong base (not bulky) leads to more substituted alkene. A general elimination E2 mechanism is given as,

(b)

Interpretation Introduction

Interpretation:

The reaction has to be classified and explained as stereo selective or stereospecific.

Concept Introduction:

Stereoselective: A stereoselective reaction where only one stereoisomer reacts among mixture of stereoisomers reacts. This reaction gives two or more stereoisomers but produces almost only one stereoisomer product.

Stereospecific: In this reaction, one stereoisomer of reactant gives one specific stereoisomer product and different stereoisomer of same reactant give its corresponding stereoisomer of same product. The stereochemistry of product depends on stereochemistry of reactants.

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Answer 4

Question

Chapter 7, Problem 97IP

(a)

Interpretation Introduction

Interpretation:

The reason for mechanism shown is inconsistent that diastereomer of compound one gives E-isomer has to be explained.

Concept Introduction:

Elimination reaction: In this reaction, two substituents are removed from the substrate to give the product in presence of base. Elimination of compound in presence of bulky base leads to less substituted alkene, in presence of strong base (not bulky) leads to more substituted alkene. A general elimination E2 mechanism is given as,

(b)

Interpretation Introduction

Interpretation:

The reaction has to be classified and explained as stereo selective or stereospecific.

Concept Introduction:

Stereoselective: A stereoselective reaction where only one stereoisomer reacts among mixture of stereoisomers reacts. This reaction gives two or more stereoisomers but produces almost only one stereoisomer product.

Stereospecific: In this reaction, one stereoisomer of reactant gives one specific stereoisomer product and different stereoisomer of same reactant give its corresponding stereoisomer of same product. The stereochemistry of product depends on stereochemistry of reactants.

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Answer 5

Chapter 7, Problem 97IP

(a)

Interpretation Introduction

Interpretation:

The reason for mechanism shown is inconsistent that diastereomer of compound one gives E-isomer has to be explained.

Concept Introduction:

Elimination reaction: In this reaction, two substituents are removed from the substrate to give the product in presence of base. Elimination of compound in presence of bulky base leads to less substituted alkene, in presence of strong base (not bulky) leads to more substituted alkene. A general elimination E2 mechanism is given as,

(b)

Interpretation Introduction

Interpretation:

The reaction has to be classified and explained as stereo selective or stereospecific.

Concept Introduction:

Stereoselective: A stereoselective reaction where only one stereoisomer reacts among mixture of stereoisomers reacts. This reaction gives two or more stereoisomers but produces almost only one stereoisomer product.

Stereospecific: In this reaction, one stereoisomer of reactant gives one specific stereoisomer product and different stereoisomer of same reactant give its corresponding stereoisomer of same product. The stereochemistry of product depends on stereochemistry of reactants.

Answer 6

Chapter 7, Problem 97IP

(a)

Interpretation Introduction

Interpretation:

The reason for mechanism shown is inconsistent that diastereomer of compound one gives E-isomer has to be explained.

Concept Introduction:

Elimination reaction: In this reaction, two substituents are removed from the substrate to give the product in presence of base. Elimination of compound in presence of bulky base leads to less substituted alkene, in presence of strong base (not bulky) leads to more substituted alkene. A general elimination E2 mechanism is given as,

Answer 7

Chapter 7, Problem 97IP

(a)

Interpretation Introduction

Interpretation:

The reason for mechanism shown is inconsistent that diastereomer of compound one gives E-isomer has to be explained.

Concept Introduction:

Elimination reaction: In this reaction, two substituents are removed from the substrate to give the product in presence of base. Elimination of compound in presence of bulky base leads to less substituted alkene, in presence of strong base (not bulky) leads to more substituted alkene. A general elimination E2 mechanism is given as,

Answer 8

(b)

Interpretation Introduction

Interpretation:

The reaction has to be classified and explained as stereo selective or stereospecific.

Concept Introduction:

Stereoselective: A stereoselective reaction where only one stereoisomer reacts among mixture of stereoisomers reacts. This reaction gives two or more stereoisomers but produces almost only one stereoisomer product.

Stereospecific: In this reaction, one stereoisomer of reactant gives one specific stereoisomer product and different stereoisomer of same reactant give its corresponding stereoisomer of same product. The stereochemistry of product depends on stereochemistry of reactants.

Answer 9

(b)

Interpretation Introduction

Interpretation:

The reaction has to be classified and explained as stereo selective or stereospecific.

Concept Introduction:

Stereoselective: A stereoselective reaction where only one stereoisomer reacts among mixture of stereoisomers reacts. This reaction gives two or more stereoisomers but produces almost only one stereoisomer product.

Stereospecific: In this reaction, one stereoisomer of reactant gives one specific stereoisomer product and different stereoisomer of same reactant give its corresponding stereoisomer of same product. The stereochemistry of product depends on stereochemistry of reactants.

Answer 10

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Answer 13

Ch. 7.2 - Prob. 1CC Ch. 7.3 - Prob. 2CC Ch. 7.3 - Prob. 1LTS Ch. 7.3 - Prob. 3PTS Ch. 7.3 - Prob. 4ATS Ch. 7.3 - Prob. 2LTS Ch. 7.3 - Prob. 5PTS Ch. 7.3 - Prob. 6ATS Ch. 7.3 - Prob. 7CC Ch. 7.4 - Prob. 8CC

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