(a) Interpretation: The product that is formed by the reaction of 2 − bromopentan − 3 − one with Li 2 O 3 , LiBr , DMF is to be drawn. Concept introduction: The bimolecular elimination reaction that favours the removal of a HX substituent from an alkyl halide that needs a base to remove H from carbon adjacent to the leaving group that in turn forms a double bond is termed E 2 elimination reaction.

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Answer 1

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Chapter 21.7, Problem 14P

Interpretation Introduction

(a)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with Li2O3, LiBr, DMF is to be drawn.

Concept introduction: The bimolecular elimination reaction that favours the removal of a HX substituent from an alkyl halide that needs a base to remove H from carbon adjacent to the leaving group that in turn forms a double bond is termed E2 elimination reaction.

Interpretation Introduction

(b)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with CH3CH2NH2 is to be drawn.

Concept introduction: The substitution reaction involves the replacement of one functional group by other functional group. In nucleophilic substitution an electron rich species attack the species that is deficient in electrons. The electrophile and the leaving group together form a substrate. The nucleophile attacks over the substrate and there occurs the removal of leaving group from the substrate.

The nucleophilic reaction that consists of bimolecular as well as bond-making and bond-breaking steps is termed as SN2 reactions. This is a one-step reaction in which both nucleophile and substrate participate in the rate determining step.

Interpretation Introduction

(c)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with CH3SH is to be drawn.

Concept introduction: The substitution reaction involves the replacement of one functional group by other functional group. In nucleophilic substitution an electron rich species attack the species that is deficient in electrons. The electrophile and the leaving group together form a substrate. The nucleophile attacks over the substrate and there occurs the removal of leaving group from the substrate.

The nucleophilic reaction that consists of bimolecular as well as bond-making and bond-breaking steps is termed as SN2 reactions. This is a one-step reaction in which both nucleophile and substrate participate in the rate determining step.

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Part VII. The H-NMR of a compound with molecular formula C5 H 10 O2 is given below. Find the following: (a) The no. of protons corresponding to each signal in the spectra (6) Give the structure of the compound and assign the signals to each proton in the compound. a 70.2 Integration Values C5H10O2 b 47.7 C 46.5 d 69.5 3.6 3.5 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0 Chemical Shift (ppm) 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8

Part 111. 1 H-NMR spectrum of a compound with integration values in red is given below. Answer the following: (a) write the signals in the 'H-NMR spectrum to the corresponding protons on the structure of the molecule below. (b) Identify the theoretical multiplicities for each proton in the compound. Also give the possible. complex splitting patterns assuming J values are not similar. там Br 22 2 3 6 4 7.2 7.0 6.8 6.6 6.4 6.2 6.0 5.8 5.6 5.4 5.2 5.0 4.8 4.6 4.4 4.2 4.0 3.8 3.6 3.4 3.2 3.0 2.8 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0 Chemical Shift (ppm) ra. Br 2 3 6 6 2.5 2.4 2.3 2.2 2.1 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 Chemical Shift (ppm) 2 2 Br 7.3 7.2 7.1 7.0 6.9 6.7 6.6 6.5 6.4 6.3 6.2 6.1 6.0 Chemical Shift (ppm) 5.9 5.8 5.7 5.5 5.4 5.3 5.2 5.0 4.9

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Answer 2

Question

Chapter 21.7, Problem 14P

Interpretation Introduction

(a)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with Li2O3, LiBr, DMF is to be drawn.

Concept introduction: The bimolecular elimination reaction that favours the removal of a HX substituent from an alkyl halide that needs a base to remove H from carbon adjacent to the leaving group that in turn forms a double bond is termed E2 elimination reaction.

Interpretation Introduction

(b)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with CH3CH2NH2 is to be drawn.

Concept introduction: The substitution reaction involves the replacement of one functional group by other functional group. In nucleophilic substitution an electron rich species attack the species that is deficient in electrons. The electrophile and the leaving group together form a substrate. The nucleophile attacks over the substrate and there occurs the removal of leaving group from the substrate.

The nucleophilic reaction that consists of bimolecular as well as bond-making and bond-breaking steps is termed as SN2 reactions. This is a one-step reaction in which both nucleophile and substrate participate in the rate determining step.

Interpretation Introduction

(c)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with CH3SH is to be drawn.

Concept introduction: The substitution reaction involves the replacement of one functional group by other functional group. In nucleophilic substitution an electron rich species attack the species that is deficient in electrons. The electrophile and the leaving group together form a substrate. The nucleophile attacks over the substrate and there occurs the removal of leaving group from the substrate.

The nucleophilic reaction that consists of bimolecular as well as bond-making and bond-breaking steps is termed as SN2 reactions. This is a one-step reaction in which both nucleophile and substrate participate in the rate determining step.

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Answer 3

Question

Chapter 21.7, Problem 14P

Interpretation Introduction

(a)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with Li2O3, LiBr, DMF is to be drawn.

Concept introduction: The bimolecular elimination reaction that favours the removal of a HX substituent from an alkyl halide that needs a base to remove H from carbon adjacent to the leaving group that in turn forms a double bond is termed E2 elimination reaction.

Interpretation Introduction

(b)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with CH3CH2NH2 is to be drawn.

Concept introduction: The substitution reaction involves the replacement of one functional group by other functional group. In nucleophilic substitution an electron rich species attack the species that is deficient in electrons. The electrophile and the leaving group together form a substrate. The nucleophile attacks over the substrate and there occurs the removal of leaving group from the substrate.

The nucleophilic reaction that consists of bimolecular as well as bond-making and bond-breaking steps is termed as SN2 reactions. This is a one-step reaction in which both nucleophile and substrate participate in the rate determining step.

Interpretation Introduction

(c)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with CH3SH is to be drawn.

Concept introduction: The substitution reaction involves the replacement of one functional group by other functional group. In nucleophilic substitution an electron rich species attack the species that is deficient in electrons. The electrophile and the leaving group together form a substrate. The nucleophile attacks over the substrate and there occurs the removal of leaving group from the substrate.

The nucleophilic reaction that consists of bimolecular as well as bond-making and bond-breaking steps is termed as SN2 reactions. This is a one-step reaction in which both nucleophile and substrate participate in the rate determining step.

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Answer 4

Question

Chapter 21.7, Problem 14P

Interpretation Introduction

(a)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with Li2O3, LiBr, DMF is to be drawn.

Concept introduction: The bimolecular elimination reaction that favours the removal of a HX substituent from an alkyl halide that needs a base to remove H from carbon adjacent to the leaving group that in turn forms a double bond is termed E2 elimination reaction.

Interpretation Introduction

(b)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with CH3CH2NH2 is to be drawn.

Concept introduction: The substitution reaction involves the replacement of one functional group by other functional group. In nucleophilic substitution an electron rich species attack the species that is deficient in electrons. The electrophile and the leaving group together form a substrate. The nucleophile attacks over the substrate and there occurs the removal of leaving group from the substrate.

The nucleophilic reaction that consists of bimolecular as well as bond-making and bond-breaking steps is termed as SN2 reactions. This is a one-step reaction in which both nucleophile and substrate participate in the rate determining step.

Interpretation Introduction

(c)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with CH3SH is to be drawn.

Concept introduction: The substitution reaction involves the replacement of one functional group by other functional group. In nucleophilic substitution an electron rich species attack the species that is deficient in electrons. The electrophile and the leaving group together form a substrate. The nucleophile attacks over the substrate and there occurs the removal of leaving group from the substrate.

The nucleophilic reaction that consists of bimolecular as well as bond-making and bond-breaking steps is termed as SN2 reactions. This is a one-step reaction in which both nucleophile and substrate participate in the rate determining step.

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Answer 5

Chapter 21.7, Problem 14P

Interpretation Introduction

(a)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with Li2O3, LiBr, DMF is to be drawn.

Concept introduction: The bimolecular elimination reaction that favours the removal of a HX substituent from an alkyl halide that needs a base to remove H from carbon adjacent to the leaving group that in turn forms a double bond is termed E2 elimination reaction.

Interpretation Introduction

(b)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with CH3CH2NH2 is to be drawn.

Concept introduction: The substitution reaction involves the replacement of one functional group by other functional group. In nucleophilic substitution an electron rich species attack the species that is deficient in electrons. The electrophile and the leaving group together form a substrate. The nucleophile attacks over the substrate and there occurs the removal of leaving group from the substrate.

The nucleophilic reaction that consists of bimolecular as well as bond-making and bond-breaking steps is termed as SN2 reactions. This is a one-step reaction in which both nucleophile and substrate participate in the rate determining step.

Interpretation Introduction

(c)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with CH3SH is to be drawn.

Concept introduction: The substitution reaction involves the replacement of one functional group by other functional group. In nucleophilic substitution an electron rich species attack the species that is deficient in electrons. The electrophile and the leaving group together form a substrate. The nucleophile attacks over the substrate and there occurs the removal of leaving group from the substrate.

The nucleophilic reaction that consists of bimolecular as well as bond-making and bond-breaking steps is termed as SN2 reactions. This is a one-step reaction in which both nucleophile and substrate participate in the rate determining step.

Answer 6

Chapter 21.7, Problem 14P

Interpretation Introduction

(a)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with Li2O3, LiBr, DMF is to be drawn.

Concept introduction: The bimolecular elimination reaction that favours the removal of a HX substituent from an alkyl halide that needs a base to remove H from carbon adjacent to the leaving group that in turn forms a double bond is termed E2 elimination reaction.

Answer 7

Chapter 21.7, Problem 14P

Interpretation Introduction

(a)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with Li2O3, LiBr, DMF is to be drawn.

Concept introduction: The bimolecular elimination reaction that favours the removal of a HX substituent from an alkyl halide that needs a base to remove H from carbon adjacent to the leaving group that in turn forms a double bond is termed E2 elimination reaction.

Answer 8

Interpretation Introduction

(b)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with CH3CH2NH2 is to be drawn.

Concept introduction: The substitution reaction involves the replacement of one functional group by other functional group. In nucleophilic substitution an electron rich species attack the species that is deficient in electrons. The electrophile and the leaving group together form a substrate. The nucleophile attacks over the substrate and there occurs the removal of leaving group from the substrate.

The nucleophilic reaction that consists of bimolecular as well as bond-making and bond-breaking steps is termed as SN2 reactions. This is a one-step reaction in which both nucleophile and substrate participate in the rate determining step.

Answer 9

Interpretation Introduction

(b)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with CH3CH2NH2 is to be drawn.

Concept introduction: The substitution reaction involves the replacement of one functional group by other functional group. In nucleophilic substitution an electron rich species attack the species that is deficient in electrons. The electrophile and the leaving group together form a substrate. The nucleophile attacks over the substrate and there occurs the removal of leaving group from the substrate.

The nucleophilic reaction that consists of bimolecular as well as bond-making and bond-breaking steps is termed as SN2 reactions. This is a one-step reaction in which both nucleophile and substrate participate in the rate determining step.

Answer 10

Interpretation Introduction

(c)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with CH3SH is to be drawn.

Concept introduction: The substitution reaction involves the replacement of one functional group by other functional group. In nucleophilic substitution an electron rich species attack the species that is deficient in electrons. The electrophile and the leaving group together form a substrate. The nucleophile attacks over the substrate and there occurs the removal of leaving group from the substrate.

The nucleophilic reaction that consists of bimolecular as well as bond-making and bond-breaking steps is termed as SN2 reactions. This is a one-step reaction in which both nucleophile and substrate participate in the rate determining step.

Answer 11

Interpretation Introduction

(c)

Interpretation: The product that is formed by the reaction of 2−bromopentan−3−one with CH3SH is to be drawn.

Concept introduction: The substitution reaction involves the replacement of one functional group by other functional group. In nucleophilic substitution an electron rich species attack the species that is deficient in electrons. The electrophile and the leaving group together form a substrate. The nucleophile attacks over the substrate and there occurs the removal of leaving group from the substrate.

The nucleophilic reaction that consists of bimolecular as well as bond-making and bond-breaking steps is termed as SN2 reactions. This is a one-step reaction in which both nucleophile and substrate participate in the rate determining step.

Answer 12

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Answer 15

Ch. 21.2 - Problem 23.1 Draw the enol or keto tautomer(s) of...Ch. 21.2 - Problem 23.3 When phenylacetaldehyde is dissolved...Ch. 21.3 - Prob. 5P Ch. 21.3 - Problem 23.5 Which bonds in the following...Ch. 21.3 - Prob. 7P Ch. 21.3 - Prob. 8P Ch. 21.3 - Prob. 9P Ch. 21.4 - Prob. 10P Ch. 21.5 - Prob. 11P Ch. 21.7 - Problem 23.11 Draw the products of each...

Solution Summary: The author describes the bimolecular elimination reaction that favours the removal of a HX substituent from an alkyl halide.

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