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
To assign:
The configuration for the compound given as E or Z.
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.
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.
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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Chapter 7 Solutions
Organic Chemistry
- Name the alkene below. Use ONLY E/Z designators to indicate stereochemistry. H H H3C CH3 CH;CH2CH2 CH3arrow_forwardHow to assign E & Z configurations and name tetra-substituted alkenes? And How do you determine tetra-substituted, mono-substituted, di-substituted?arrow_forwardAssign the following alkene molecules as being cis or trans, E or Z isomers.arrow_forward
- Select the most stable alkene that can be hydrogenated to form 1,2-dimethylcyclopentane: ㅂ 아 d 아 임 H2. Pd/Carrow_forwardFor each of the following alkenes, assign the configuration of the double bond as either Z or Earrow_forwardDraw a structural formula for the product formed upon hydroboration/oxidation of the alkene below. Use wedge and hash bonds ONLY for rings. Do not show stereochemistry in other cases. If the reaction produces a racemic mixture, just draw one stereoisomer.arrow_forward
- Name the alkenes below. Use ONLY E/Z designators to indicate stereochemistry.arrow_forwardHow many alkenes or cycloalkenes with the general formula C9H16 can you treat with HCl to obtain 1-chloro-1-ethyl-3,4-dimethylcyclopentane as a major product?arrow_forwardwhich of the following reagents can oxidize an alkene? H2/Pt, HCl, H2SO4, KMnO4arrow_forward
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage LearningOrganic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning