Organic Chemistry (9th Edition)
Organic Chemistry (9th Edition)
9th Edition
ISBN: 9780321971371
Author: Leroy G. Wade, Jan W. Simek
Publisher: PEARSON
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Chapter 5, Problem 5.37SP

(a)

Interpretation Introduction

To draw: All the stereoisomers of 2,3,4-tribromopentane with the help of fisher projections.

Interpretation: All the stereoisomers of 2,3,4-tribromopentane with the help of fisher projections are to be drawn.

Concept introduction: The enantiomers of a chiral compound can be named with the help of right hand and left hand configuration. In fisher projection, chiral carbon atom is represented by a cross. When two groups on a fisher projection are interchanged, the configuration of chiral carbon also changes from (R) to (S) aur (S) to (R).

(b)

Interpretation Introduction

To determine: The asymmetric carbon atoms and to label them as (R) or (S).

Interpretation: The asymmetric carbon atoms are to be identified and (R) or (S) has to be labeled.

Concept introduction: The enantiomers of a chiral compound can be named with the help of right hand and left hand configuration. In fisher projection, chiral carbon atom is represented by a cross. When two groups on a fisher projection are interchanged, the configuration of chiral carbon also changes from (R) to (S) aur (S) to (R).

(c)

Interpretation Introduction

To determine: The validation of the fact that C3 in the meso structures is neither asymmetric nor a chiral centre, yet it is a stereocentre.

Interpretation: The validation of the fact that C3 in the meso structures is neither asymmetric nor a chiral centre, yet it is a stereocentre is to be stated.

Concept introduction: The enantiomers of a chiral compound can be named with the help of right hand and left hand configuration. Chiral centers signify the presence of asymmetric carbon atoms. They are examples of stereocentre. When two groups bounded to an atom are interchanged to give a stereoisomer, then the atom is known as stereogenic atom.

(d)

Interpretation Introduction

To determine: The validation of the fact that C3 is not a stereocentre in the enantiomers.

Interpretation: The validation of the fact that C3 is not a stereocentre in the enantiomers is to be stated.

Concept introduction: Chiral centres signify the presence of asymmetric carbon atoms. They are examples of stereocentres. When two groups bounded to an atom are interchanged to give a stereoisomer, then the atom is known as stereogenic atom.

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