The intermediate in the given mechanism has to be identified. 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.

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Answer 1

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Chapter 13, Problem 69IP

Interpretation Introduction

Interpretation: The intermediate in the given mechanism has to be identified.

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.

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Answer 2

Question

Chapter 13, Problem 69IP

Interpretation Introduction

Interpretation: The intermediate in the given mechanism has to be identified.

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.

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Answer 3

Question

Chapter 13, Problem 69IP

Interpretation Introduction

Interpretation: The intermediate in the given mechanism has to be identified.

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.

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Answer 4

Question

Chapter 13, Problem 69IP

Interpretation Introduction

Interpretation: The intermediate in the given mechanism has to be identified.

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.

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Answer 5

Chapter 13, Problem 69IP

Interpretation Introduction

Interpretation: The intermediate in the given mechanism has to be identified.

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.

Answer 6

Chapter 13, Problem 69IP

Interpretation Introduction

Interpretation: The intermediate in the given mechanism has to be identified.

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.

Answer 7

Chapter 13, Problem 69IP

Interpretation Introduction

Interpretation: The intermediate in the given mechanism has to be identified.

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.

Answer 8

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Answer 11

Ch. 13.2 - Prob. 1LTS Ch. 13.2 - Prob. 1PTS Ch. 13.2 - Prob. 2PTS Ch. 13.2 - Prob. 3ATS Ch. 13.4 - Prob. 4CC Ch. 13.5 - Prob. 2LTS Ch. 13.5 - PRACTICE the skill Show reagents that you could...Ch. 13.5 - APPLY the skill Compound 2 was made as a...Ch. 13.5 - Prob. 7CC Ch. 13.5 - Prob. 8CC

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