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).

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Answer 1

Question

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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Students have asked these similar questions

On b), I understand that we don't know which side of the molecule the Cl would attach on, but I was under the impression that we only show stereochemistry on a chiral center, and I do not see where the chiral center is on this molecule. Would you be able to explain this?

(a) Draw all other stereoisomers of the molecule , labelling meso forms (if any), and assign descriptors to chiral carbon atoms. (b) Including molecule below, label pairs of enantiomers and pairs of diastereomers. (c) If you were to distill a mixture of all the isomers, how many fractions could be obtained, and what is in each fraction?

Which do you expect to be the more stable conformation of cis-1,3-dimethylcyclobutane, A or B? Why?

Answer 2

Question

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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Answer 3

Question

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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Answer 4

Question

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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Answer 5

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.

Answer 6

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).

Answer 7

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).

Answer 8

(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).

Answer 9

(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).

Answer 10

(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.

Answer 11

(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.

Answer 12

(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.

Answer 13

(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.

Answer 14

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Answer 15

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Answer 16

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Answer 17

Ch. 5.2 - Determine whether the following objects are chiral...Ch. 5.2A - Prob. 5.2P Ch. 5.2B - Prob. 5.3P Ch. 5.2B - Prob. 5.4P Ch. 5.2C - Prob. 5.5P Ch. 5.3 - Prob. 5.6P Ch. 5.3 - Prob. 5.7P Ch. 5.4D - Prob. 5.8P Ch. 5.4D - Prob. 5.9P Ch. 5.4D - Prob. 5.10P

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