Concept explainers
Interpretation: The two enantiomers of the amino acid leucine, HOOCCH(NH2)CH2CH(CH3)2, has to be drawn and each enantiomer must be labelled as R or S.
Concept introduction: Enantiomers are the non-superimposable mirror images of each other. Optical isomers are given R and S configuration by sequence rule that is by assigning 1 to 4 priorities to the substituents attached at the chiral center on the basis of their
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Organic Chemistry
- Draw a chiral molecule with two chiral centers and determine the absolute configuration (R or S) at each chiral center.arrow_forward● Identify the chiral center(s) and determine its absolute configuration. H₂C-arrow_forwardChiral Atoms: Determine how many chiral centers each molecule has and indicate wnich atoms are chiral by adding an asterisk (*) next to it. Then assign the chiral atom as either (R) or (S). Br Br он "Br "CHa Br Br Br Br CH3arrow_forward
- The number of chiral centers in progesterone (shown below) is C-CH3arrow_forwardCH CH 4. How many chiral centers does penicillin have? Penicilinarrow_forwardUse models (or drawings) to determine which of the following compounds are stable chiral molecules at room temperature. For those that are chiral, draw three-dimensional ( perspective) diagrams of the enantiomeric forms.arrow_forward
- Draw a 3-D structure of a molecule with a molecular formula of C4H9Cl containing one chiral center and draw its mirror image.arrow_forwardDetermine whether three molecules—H2O, CH2BrCl, and CHBrClF—aresuperimposable on their mirror images; that is, are H2O, CH2BrCl, and CHBrClF chiral or achiral?arrow_forwardConsider compounds I, II, . How are I and II related to each other? (enantiomers, diastereomers, constitutional isomers, two conformers of the same molecule, not related). Explain. OH HO Br Brarrow_forward
- An example of a chiral center is a carbon that bears 4 different groups, and therefore has no symmetry. Select ALL of the molecules that contain a chiral center. CI 요 Br 8 Brarrow_forwardUse models (or drawings) to determine which of the following compounds are stable chiral molecules at room temperature. For those that are chiral, draw three-dimensional ( perspective) diagrams of the enantiomeric forms. H OMe OMe Bu Bu (HO2C)HC=C=CH(CO2H) HO₂C NH₂ CO₂H NH₂ (HO2C)HC=C=C=CH(CO2H)arrow_forwardFind an example of a chiral molecule in biology whose enantiomers have markedly different functions. Where is the chiral center located, and how can it be identified? Find and include an image of its molecular structure. What function does the active enantiomer play biologically, and how is this function hindered or changed with the other enantiomer? Are there any synthetic considerations for this molecule?arrow_forward
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