Pearson eText Organic Chemistry -- Instant Access (Pearson+)
Pearson eText Organic Chemistry -- Instant Access (Pearson+)
8th Edition
ISBN: 9780135213711
Author: Paula Bruice
Publisher: PEARSON+
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Chapter 20, Problem 38P

(a)

Interpretation Introduction

Interpretation:

The aldopentoses which are enantiomers out of the eight aldopentoses are to be stated.

Concept Introduction:

Enantiomers are the pairs which are mirror images of each other.  These mirror images are non-superimposable to each other.  This means the forms of a compound which exists in two non-superimposable forms each of which is a mirror image of other form is known as enantiomers.

(b)

Interpretation Introduction

Interpretation:

The aldopentoses which are C-2 epimers out of the eight aldopentoses are to be stated.

Concept Introduction:

C-2 epimers are the compounds which has different configuration at second carbon atom and have same configuration at all other carbon atoms.

The stereogenic center present in the compound which makes the orientation of molecules different is known as epimers.

(c)

Interpretation Introduction

Interpretation:

The aldopentoses which forms an optically active compound on oxidation with nitric acid is to be stated.

Concept introduction:

Aldopentoses are the compounds containing five carbon atoms and one aldehyde group at one end of carbon chain which gives dicarboxylic acids called aldaric acids on oxidation with nitric acids.  Aldaric acid is the molecule containing six carbon atoms having carboxylic acid group on both the sides.

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Pearson eText Organic Chemistry -- Instant Access (Pearson+)

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