Organic Chemistry - Standalone book
Organic Chemistry - Standalone book
10th Edition
ISBN: 9780073511214
Author: Francis A Carey Dr., Robert M. Giuliano
Publisher: McGraw-Hill Education
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Chapter 26.4, Problem 6P
Interpretation Introduction

Interpretation:

A retrosynthetic analysis to plan a synthesis of valine from 3-methylbutanoic acid is to be discussed and equations for the synthesis are to be written.

Concept Introduction:

Amino acids can be synthesized by the reaction of an α-halo carboxylic acid with ammonia.

This is called as nucleophilic substitution reaction.

α-halo carboxylic acid can be prepared by the reaction of halogens with the carboxylic acids.

Phosphorus tribromide is used to promote the halogenation in this reaction.

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H-Br Energy 1) Draw the step-by-step mechanism by which 3-methylbut-1-ene is converted into 2-bromo-2-methylbutane. 2) Sketch a reaction coordinate diagram that shows how the internal energy (Y- axis) of the reacting species change from reactants to intermediate(s) to product. Br
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