Organic Chemistry Plus Masteringchemistry With Pearson Etext, Global Edition
Organic Chemistry Plus Masteringchemistry With Pearson Etext, Global Edition
9th Edition
ISBN: 9781292151229
Author: Wade, LeRoy G.
Publisher: PEARSON
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Chapter 9.9F, Problem 9.20P

(a)

Interpretation Introduction

To determine: The structure of the product and an intermediate, when hydroboration-oxidation is applied to but2yne.

Interpretation: The structure of the product and an intermediate, when hydroboration-oxidation is applied to but2yne is to be shown.

Concept introduction: Hydroboration-oxidation reactions convert an alkyne molecule in to ketone in the presence of disiamylborane and hydrogen peroxide through the two step mechanism, whereas an alkene molecule in hydroboration-oxidation reaction is converted into alcohol by the addition of water.

(b)

Interpretation Introduction

To determine: The reason as to why a mixture of products should be expected with any unsymmetrical internal alkyne.

Interpretation: The reason as to why a mixture of products should be expected with any unsymmetrical internal alkyne is to be stated.

Concept introduction: Hydroboration-oxidation reactions convert an alkyne molecule into ketone in the presence of disiamylborane and hydrogen peroxide through two step mechanism, whereas an alkene molecule in hydroboration-oxidation reaction is converted into alcohol by the addition of water.

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