Organic Chemistry: Principles and Mechanisms (Second Edition)
Organic Chemistry: Principles and Mechanisms (Second Edition)
2nd Edition
ISBN: 9780393663556
Author: Joel Karty
Publisher: W. W. Norton & Company
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Chapter 12, Problem 12.24P
Interpretation Introduction

(a)

Interpretation:

The steps to carry out the given transformation is to be shown.

Concept introduction:

An alkene can be converted to an alcohol in many ways, out of which, the oxymercuration-reduction and an acid-catalyzed hydration reaction follows Markovnikov’s regiochemistry while hydroboration-oxidation follows anti Markovnikov’s regiochemistry. In hydroboration-oxidation, the partially negative hydrogen atom forms a bond with most substituted carbon while the boron ends up attached to the least substituted carbon atom. In the final product, the CB bond is replaced by the COH bond.

Interpretation Introduction

(b)

Interpretation:

The steps to carry out the given transformation is to be shown.

Concept introduction:

An alkene can be converted to an alcohol in many ways, out of which, the oxymercuration-reduction, and an acid-catalyzed hydration reaction follows Markovnikov’s regiochemistry. The oxymercuration-reduction does not go through the carbocation intermediate, so no carbocation rearrangements occur with this mechanism. On the other hand, carbocation rearrangements are possible in acid-catalyzed addition of water. The product of oxymercuration-reduction is the one expected from Markovnikov’s rule, that is, the OH group forms a bond with the carbon atom that can better stabilize a positive charge. Rearrangement generally does not take place with oxymercuration–reduction.

Interpretation Introduction

(c)

Interpretation:

The steps to carry out the given transformation is to be shown.

Concept introduction:

An alkene can be converted to an alcohol in many ways, out of which, the oxymercuration-reduction, and an acid-catalyzed hydration reactions follow Markovnikov’s regiochemistry. The oxymercuration-reduction does not go through the carbocation intermediate, so no carbocation rearrangements occur with this mechanism. On the other hand, carbocation rearrangements are possible in acid-catalyzed addition of water. The product of oxymercuration-reduction is the one expected from Markovnikov’s rule, that is, the OH group forms a bond to the carbon atom that can better stabilize a positive charge. Rearrangement generally does not take place with oxymercuration–reduction.

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Organic Chemistry: Principles and Mechanisms (Second Edition)

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