Concept explainers
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(a)
Interpretation:
Whether the given name describes a single stereoisomer unambiguously is to be determined and the name using R and S designations for the chiral centers is to be written if the name describes a single stereoisomer.
Concept introduction:
For disubstituted cycloalkanes, cis isomers are the ones in which the two substituents lie on the same side of the ring, while trans isomers are the ones in which they lie on the opposite side of the ring.
A stereocenter is an atom with the property in that interchanging any two of its attached groups produces a different stereoisomer. A tetrahedral stereocenter is called a chiral center when it is bonded to four different groups. The four substituents attached to the chiral center are prioritized according to their
Each stereoisomer is described by a single name. For more than one stereoisomers, more than one names are written.
If there are two or more distinct structures possible for a given single name, then it suggests that the given name does not describe a single stereoisomer unambiguously.
If there is only one structure possible for a given single name, then it suggests that the given name describes a single stereoisomer unambiguously.
(b)
Interpretation:
Whether the given name describes a single stereoisomer unambiguously is to be determined and the name using R and S designations for the chiral centers is to be written if the name describes a single stereoisomer.
Concept introduction:
For disubstituted cycloalkanes, cis isomers are the ones in which the two substituents lie on the same side of the ring, while trans isomers are the ones in which they lie on the opposite side of the ring.
A stereocenter is an atom with the property in that interchanging any two of its attached groups produces a different stereoisomer. A tetrahedral stereocenter is called a chiral center when it is bonded to four different groups. The four substituents attached to the chiral center are prioritized according to their atomic numbers. The substituent atom having the greater atomic number has higher priority. When writing the IPUAC name, the R or S designation is written in parenthesis for each asymmetric carbon atom, and hyphens are used to separate those designations from the rest of the IUPAC name.
Each stereoisomer is described by a single name. For more than one stereoisomers, more than one names are written.
If there are two or more distinct structures possible for a given single name, then it suggests that the given name does not describe a single stereoisomer unambiguously.
If there is only one structure possible for a given single name, then it suggests that the given name describes a single stereoisomer unambiguously.
(c)
Interpretation:
Whether the given name describes a single stereoisomer unambiguously is to be determined and the name using R and S designations for the chiral centers is to be written if the name describes a single stereoisomer.
Concept introduction:
For disubstituted cycloalkanes, cis isomers are the ones in which the two substituents lie on the same side of the ring, while trans isomers are the ones in which they lie on the opposite side of the ring.
A stereocenter is an atom with the property in that interchanging any two of its attached groups produces a different stereoisomer. A tetrahedral stereocenter is called a chiral center when it is bonded to four different groups. The four substituents attached to the chiral center are prioritized according to their atomic numbers. The substituent atom having the greater atomic number has higher priority. When writing the IPUAC name, the R or S designation is written in parenthesis for each asymmetric carbon atom, and hyphens are used to separate those designations from the rest of the IUPAC name.
Each stereoisomer is described by a single name. For more than one stereoisomers, more than one names are written.
If there are two or more distinct structures possible for a given single name, then it suggests that the given name does not describe a single stereoisomer unambiguously.
If there is only one structure possible for a given single name, then it suggests that the given name describes a single stereoisomer unambiguously.
(d)
Interpretation:
Whether the given name describes a single stereoisomer unambiguously is to be determined and the name using R and S designations for the chiral centers is to be written if the name describes a single stereoisomer.
Concept introduction:
Whether the given name describes a single stereoisomer unambiguously is to be determined and the name using R and S designations for the chiral centers is to be written if the name describes a single stereoisomer.
Concept introduction:
For disubstituted cycloalkanes, cis isomers are the ones in which the two substituents lie on the same side of the ring, while trans isomers are the ones in which they lie on the opposite side of the ring.
A stereocenter is an atom with the property in that interchanging any two of its attached groups produces a different stereoisomer. A tetrahedral stereocenter is called a chiral center, when it is bonded to four different groups. The four substituents attached to the chiral center are prioritized according to their atomic numbers. The substituent atom having the greater atomic number has the higher priority. When writing the IPUAC name, the R or S designation is written in parenthesis for each asymmetric carbon atom, and hyphens are used to separate those designations from the rest of the IUPAC name.
Each stereoisomer is described by a single name. For more than one stereoisomers, more than one names are written.
If there are two or more distinct structures possible for a given single name, then it suggests that the given name does not describe a single stereoisomer unambiguously.
If there is only one structure possible for a given single name, then it suggests that the given name describes a single stereoisomer unambiguously.
(e)
Interpretation:
Whether the given name describes a single stereoisomer unambiguously is to be determined and the name using R and S designations for the chiral centers is to be written if the name describes a single stereoisomer.
Concept introduction:
Whether the given name describes a single stereoisomer unambiguously is to be determined and the name using R and S designations for the chiral centers is to be written if the name describes a single stereoisomer.
Concept introduction:
For disubstituted cycloalkanes, cis isomers are the ones in which the two substituents lie on the same side of the ring, while trans isomers are the ones in which they lie on the opposite side of the ring.
A stereocenter is an atom with the property in that interchanging any two of its attached groups produces a different stereoisomer. A tetrahedral stereocenter is called a chiral center when it is bonded to four different groups. The four substituents attached to the chiral center are prioritized according to their atomic numbers. The substituent atom having the greater atomic number has the higher priority. When writing the IPUAC name, the R or S designation is written in parenthesis for each asymmetric carbon atom and hyphens are used to separate those designations from the rest of the IUPAC name.
Each stereoisomer is described by a single name. For more than one stereoisomers, more than one names are written.
If there are two or more distinct structures possible for a given single name, then it suggests that the given name does not describe a single stereoisomer unambiguously.
If there is only one structure possible for a given single name, then it suggests that the given name describes a single stereoisomer unambiguously.
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Chapter C Solutions
ORGANIC CHEMISTRY E-BOOK W/SMARTWORK5
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- Which of the following structures represent the same stereoisomer? A. only 1 and 2 B. only 1 and 3 C. only 2 and 3 D. 1, 2 and 3 Please explain.arrow_forwardMark each chiral center in the following molecule with an asterisk. How many stereoisomers are possible for each molecule?arrow_forwardShown below is Streptomycin, and Neomycin B. Circle and label as many functional groups in these molecules as you can. a. Label each chiral carbon in Streptomycin. How many total stereoisomers exist for Streptomycin? b. Label each chiral carbon in Neomycin B. How many total stereoisomers exist for Neomycin B?arrow_forward
- For the list of molecules, indicate if there is an internal mirror plane and if they are chiral. 1. cis-1,3- dimethylcyclobutane 2. trans-1,3- dimethylcyclobutane 3. cis-1,2- dimethylcyclobutane 4. trans-1,2- dimethylcyclobutane 5. 2-butanol 6. Meso-2,3 butanediol 7. Glycine (aminoacetic acid) 8. L-proline 9. Isoleucine 10. 1,3 dichloro-allene (C3 H2 Cl2 )arrow_forwardDraw three-dimensional representations of the following compounds. Which have asymmetric carbon atoms? Which have no asymmetric carbons but are chiral anyway? 1-chlorobuta-1,2-dienearrow_forwarda).Consider the Fischer projections of the following pair of stereoisomers. Name eachstructure in the pair according to IUPAC nomenclature, using appropriate R/S designation to show handedness. b).Draw the missing stereoisomer(s)in this set. Indicate the relationship (enantiomers or diastereomers) between every possible pairing of compounds. Circle a pair of compounds that, if present in equal amounts, will not show optical activity. If one of these compounds has a specific rotation of -7.9owhen isolated, what is the specific rotation of the other?arrow_forward
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