Concept explainers
(a)
Interpretation:
The configuration of the given compound has to be predicted.
Concept introduction:
Enantiomers are named by following Cahn-Ingold-Prelog system, in which R or S letter is used to differentiate between enantiomers.
According to Cahn-Ingold-Prelog system,
The group attached to asymmetric center should be ranked based on the
Check the direction of arrow drawn in the direction of decreasing priority. If the arrow points clockwise direction, then the compound has R configuration. If the arrow points counterclockwise direction, then the compound has S configuration. If the group with lowest priority is not bonded by a hatched wedge, then interchange this group (lowest priority) by group bonded to hatched wedge and draw the arrow in priority order but the configuration is assigned as just reverse.
(b)
Interpretation:
The configuration of the given compound has to be predicted.
Concept introduction:
Enantiomers are named by following Cahn-Ingold-Prelog system, in which R or S letter is used to differentiate between enantiomers.
According to Cahn-Ingold-Prelog system,
The group attached to asymmetric center should be ranked based on the atomic number of atom which directly connected to asymmetric center. The higher the atomic number of atom, higher the priority. If there is tie, then consider the next atoms attached to the connected atom and so on.
Check the direction of arrow drawn in the direction of decreasing priority. If the arrow points clockwise direction, then the compound has R configuration. If the arrow points counterclockwise direction, then the compound has S configuration. If the group with lowest priority is not bonded by a hatched wedge, then interchange this group (lowest priority) by group bonded to hatched wedge and draw the arrow in priority order but the configuration is assigned as just reverse.
(c)
Interpretation:
The configuration of the given compound has to be predicted.
Concept introduction:
Enantiomers are named by following Cahn-Ingold-Prelog system, in which R or S letter is used to differentiate between enantiomers.
According to Cahn-Ingold-Prelog system,
The group attached to asymmetric center should be ranked based on the atomic number of atom which directly connected to asymmetric center. The higher the atomic number of atom, higher the priority. If there is tie, then consider the next atoms attached to the connected atom and so on.
Check the direction of arrow drawn in the direction of decreasing priority. If the arrow points clockwise direction, then the compound has R configuration. If the arrow points counterclockwise direction, then the compound has S configuration. If the group with lowest priority is not bonded by a hatched wedge, then interchange this group (lowest priority) by group bonded to hatched wedge and draw the arrow in priority order but the configuration is assigned as just reverse.
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Check out a sample textbook solutionChapter 4 Solutions
Organic Chemistry (8th Edition)
- Do the following compounds have the R or the S configuration?arrow_forwardHow many chiral centers are in the molecule shown below? O HNarrow_forwardWhich C-N bond in the following ions can undergo rotation? (draw a picture which represents bonding between C and N atoms to support your answer). CH3NH3+ CH2NH2+arrow_forward
- Which of the following contain(s) both sp-hybridized and sp3-hybridized carbon? OH3CCHCH₂ O H2CCCH2 OH3CCH₂CH3 O H3CCCH Larrow_forward2. Assign the R or S configuration to each chiral center in the molecules below. CH2CH2B. CH3 .CO2H (H3C)3C. C=CH HO CH,F H,C=G+CH(CH,CH3)2 CH2CH,CH3 HO H C(CH3)3 ОН CH,CH,Br F"CH2Br 3 4 (numbers indicate the IUPAC numbering)arrow_forwardBelow are compounds used in medicine. Circle the chiral centers of each drug.arrow_forward
- 1. Which of the following compounds will not rotate the plane of polarization of plane- polarized light? OH OH | ОН ОН ОН ОН II ОН ОН ОН ||| ОН ОН ОН IVarrow_forwardWhich Newman projection corresponds to point A on the graph of potential energy vs. rotation about the C2-C3 bond?arrow_forwardIdentify e absolute configurations of all chiral centers in the following compounds. H CH3 H CI HO CH3 H, Bì Harrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning