The major product of the given reaction should be drawn. Concept introduction: Ring-opening of epoxide : The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction. Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide). Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring. Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained. Base catalyzed ring opening of epoxide: The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

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Answer 1

Question

Chapter 9.8, Problem 20P

(a)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

(b)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

(c)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

(d)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

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Answer 2

Question

Chapter 9.8, Problem 20P

(a)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

(b)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

(c)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

(d)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

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Answer 3

Question

Chapter 9.8, Problem 20P

(a)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

(b)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

(c)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

(d)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

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Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 9.8, Problem 20P

(a)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

(b)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

(c)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

(d)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

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Answer 5

Chapter 9.8, Problem 20P

(a)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

(b)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

(c)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

(d)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

Answer 6

Chapter 9.8, Problem 20P

(a)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

Answer 7

Chapter 9.8, Problem 20P

(a)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

Answer 8

(b)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

Answer 9

(b)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

Answer 10

(c)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

Answer 11

(c)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

Answer 12

(d)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

Answer 13

(d)

Interpretation Introduction

Interpretation:

The major product of the given reaction should be drawn.

Concept introduction:

Ring-opening of epoxide: The epoxide ring is highly strain and readily undergoes reaction with strong nucleophile result in the ring-opening reaction.

Acid-catalyzed ring-opening of epoxide: The epoxide ring is protonated and the nucleophile attack depends on the electronic or steric effect (nature of epoxide).

Regiochemistry: When the epoxide is unsymmetrical, the nucleophile attack at the more substituted position of the protonated epoxide ring.

Stereochemistry: when the nucleophile attack takes place at chiral center, an inversion of configuration is obtained.

Base catalyzed ring opening of epoxide:

The nucleophile will attack at the less substituted position under basic conditions and then the alkoxide ion gets proton from alcohol which form the product.

Answer 14

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Answer 15

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Answer 16

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Answer 17

Ch. 9.1 - Draw the structures of straight-chain alcohols...Ch. 9.1 - Prob. 2P Ch. 9.1 - Prob. 3P Ch. 9.2 - Why are NH3 and CH3NH2 no longer nucleophiles when...Ch. 9.2 - Prob. 5P Ch. 9.2 - The observed relative reactivities of primary,...Ch. 9.4 - Which of the following alcohols would dehydrate...Ch. 9.4 - Prob. 10P Ch. 9.4 - Prob. 11P Ch. 9.4 - Prob. 12P

Solution Summary: The author explains that the major product of the given reaction should be drawn. Ring-opening of epoxide is protonated and the nucleophile attack depends on the electronic or steric effect.

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