Concept explainers
Interpretation:
The configuration of (+)-2-methyl-1-butanol has to be determined from the given structure of (-)-2-methyl-1-butanol.
Concept introduction:
The pair of Enantiomers has different configurations.
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.
Pair of enantiomers has different optical activity, which means if one will show levorotatory then the other will show dextrorotatory.
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Essential Organic Chemistry, Global Edition
- Which of the following represents the lowest energy conformer of a compound that could be described (inaccurately) as 3-(1-methylethyl)cyclohexanol with a trans- relationship between groups? OH OH но HO (A) (B) (C) (D) O Structure D Structure C Structure A Structure Barrow_forward5:51 Draw examples of the following: (a) A meso compound with the formula C8H18 (b) A meso compound with the formula C9H20 (c) A compound with two chirality centers, one R and the other Sarrow_forwardFollowing are stereorepresentations for the four stereoisomers of 3-chloro-2-butanol. (a) Assign an R or S configuration to each chiral center. (b) Which compounds are enantiomers? (c) Which compound are diastereomers?arrow_forward
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- Draw and name all the stereoisomers of 2-bromo-3-iodopentane. Indicate which stereoisomers are enantiomers and which are diastereomers.arrow_forwardVIII. Assign R, S configurations to each chirality center in the molecule below. Br CH3 X OH CH3 I I (arrow_forwardAlcohol groups can be chiral. Identify the correct label for the stereochemical center bonded to the hydroxyl group. ОН A) R B) S C) E D) Z E) This compound is not chiral.arrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning