a) Interpretation: To assign E or Z configuration for the compound given. Concept introduction: The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration. To assign: The configuration for the compound given as E or Z.

Question

Name the alkenes below. Use ONLY E/Z designators to indicate stereochemistry. H3C H Ja H CH₂-C H CH3 CH₂CH3

Answer 1

Question

Chapter 7.5, Problem 13P

Interpretation Introduction

a)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Interpretation Introduction

b)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Interpretation Introduction

c)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Interpretation Introduction

d)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

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Name the alkenes below. Use ONLY E/Z designators to indicate stereochemistry. H3C H Ja H CH₂-C H CH3 CH₂CH3

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Name the alkene below.Use ONLY E/Z designators to indicate stereochemistry.

Answer 2

Question

Chapter 7.5, Problem 13P

Interpretation Introduction

a)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Interpretation Introduction

b)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Interpretation Introduction

c)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Interpretation Introduction

d)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

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Answer 3

Question

Chapter 7.5, Problem 13P

Interpretation Introduction

a)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Interpretation Introduction

b)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Interpretation Introduction

c)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Interpretation Introduction

d)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

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Answer 4

Question

Chapter 7.5, Problem 13P

Interpretation Introduction

a)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Interpretation Introduction

b)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Interpretation Introduction

c)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Interpretation Introduction

d)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

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Answer 5

Chapter 7.5, Problem 13P

Interpretation Introduction

a)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Interpretation Introduction

b)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Interpretation Introduction

c)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Interpretation Introduction

d)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Answer 6

Chapter 7.5, Problem 13P

Interpretation Introduction

a)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Answer 7

Chapter 7.5, Problem 13P

Interpretation Introduction

a)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Answer 8

Interpretation Introduction

b)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Answer 9

Interpretation Introduction

b)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Answer 10

Interpretation Introduction

c)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Answer 11

Interpretation Introduction

c)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Answer 12

Interpretation Introduction

d)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Answer 13

Interpretation Introduction

d)

Interpretation:

To assign E or Z configuration for the compound given.

Concept introduction:

The two groups attached to the carbons in double bond are to be ranked first. The member that ranks higher can be determined by considering the atomic number of the first atom of the two substituents separately. The atom with highest atomic number gets the higher rank. If a decision cannot be made by considering the atomic number of the first atom in each substituent then the second, third, fourth atoms away from double bond are considered until the first difference is found. Multiple bonded atoms are considered as equivalent to the same number of single bonded atoms. The isomer that has the higher ranked groups on each carbon on the same side of the double bond is said to have Z configuration. If the higher ranked groups are on the opposite sides, the alkene is said to have E configuration.

To assign:

The configuration for the compound given as E or Z.

Answer 14

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Answer 15

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Answer 25

Ch. 7.2 - Calculate the degree of unsaturation in each of...Ch. 7.2 - Prob. 2P Ch. 7.2 - Diazepam, marketed as an antianxiety medication...Ch. 7.3 - Give IUPAC names for the following compounds:Ch. 7.3 - Prob. 5P Ch. 7.3 - Prob. 6P Ch. 7.3 - Prob. 7P Ch. 7.4 - Prob. 8P Ch. 7.4 - Prob. 9P Ch. 7.4 - Prob. 10P

Solution Summary: The author explains how the two groups attached to the carbons in double bond are to be ranked first. The atom with highest atomic number gets the higher rank.

Chapter 7 Solutions