(a)
To determine: The validation of the fact that cis-cycloctene is a meso compound under the original definition, but not under working definition.
Interpretation: The validation of the fact that cis-cycloctene is a meso compound under the original definition, but not under working definition is to be stated.
Concept introduction: The class of diastereoisomers includes stereoisomers that are not enantiomers. They are not mirror images of each other. There are two or more chiral centers generally present in diastereoisomers. Structures of diastereoisomers are not the same, but they are stereoisomers because they differ in the spatial arrangement of atoms.
(b)
To determine: The validation of the fact that a double allene is a meso compound under the original definition, but not under working definition.
Interpretation: The validation of the fact that a double allene is a meso compound under the original definition, but not under working definition is to be stated.
Concept introduction: The class of diastereoisomers includes stereoisomers that are not enantiomers. They are not the mirror images of each other. There are two or more chiral centers generally present in diastereoisomers. Structures of diastereoisomers are not the same, but they are stereoisomers because they differ in the spatial arrangement of atoms.
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Chapter 5 Solutions
EP ORGANIC CHEMISTRY -MOD.MASTERING 18W
- Why are carbon atoms 1 and 3 of glyceraldehyde not considered chiral?arrow_forwardThe original definition of meso is “an achiral compound that has chiral diastereomers.” Our working definition of meso is “an achiral compound that has chiral centers (usually asymmetric carbon atoms).” The working definition is much easier to apply because we don’t have to envision all possible chiral diastereomers of the compound. Still, the working definition is not quite as complete as the original definition. Show how cis-cyclooctene is defined as a meso compound under the original definition, but not under our working definition.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
- Because there is usually slow interconversion between the two isomeric forms at room temperature. Because there is usually rapid interconversion between the two isomeric forms at room temperature. Because chirality only exists with the tetrahedral carbon atoms. Because four bonds a are needed to define a stereogenic center.arrow_forwardC2. Subject:- Chemistry please identify the chiral centers and determine the sterechemistry of a compound that contains a cycolhexanearrow_forward17. How many chiral carbon atoms does 1,3-dichloropentane have? a) Zero b) One c) Two d) Three be dextrorotatory. b) An optically active substance that rotates light counterclockwise is said to be levorotatory. c) An optically active substance that rotates light clockwise is said to be levorotatory. d) None of the above statements are correct. 18. How many chiral carbon atoms does chlorocyclohexane have? a) Zero b) One c) Two d) More than two 23. When four different atoms or 19. Stereoisomers that contain chiral carbon atoms and are superimposable on the own mirror image are called: a) diastereomers b) meso compounds c) racemic mixtures d) none of the above are correct functional groups are attached to a carbon atom, the carbon atom is called a(n): a) symmetric carbon atom b) asymmetric carbon atom c) quaternary carbon atom d) optically active carbon atom 24. How many chiral carbons are in the compound below? CH3 CH3 20. Stereoisomers that are not mirror images of each other are…arrow_forward
- What is the relationship between these structures and why? these are diastereomers because all chiral centers are opposite these are diastereomers because some, but not all of the chiral centers are opposite these are enantiomers because all chiral centers are opposite these are enantiomers because some, but not all of the chiral centers are oppositearrow_forwardWhich of the following statements is true for a pair of ENANTIOMERS? A) they will have identical physiological properties. B) they will have specific rotations of opposite sign. C) they will have different molar masses. D) they will have different physical properties.arrow_forward-Identify the configuration of the double bond. -Redraw the structure and identify the chiral centers using an asterisk. -Redraw the structure with all the chiral centers in R configuration.arrow_forward
- Define the relationship between the molecules ( enantiomers , diastereomers structural isomers ( constitutional isomers ) , or identical . Locate the chiral centers and assign the absolute configuration for each of them .arrow_forwardHow many chirality centers are in this molecule, show them .arrow_forward
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