Organic Chemistry
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Identify the relationship of the given structure with each of the following structures as enantiomers, diastereomers, or identical compounds.
Identify each of the given pairs as either constitutional isomers, enantiomers, diastereomers, or identical compounds.
Determine the stereoisomeric relationship among the structures of pair (a) and the structures of pair (b).
Provide the relationship between stereoisomers with two asymmetric centers if:
a. the corresponding configurations of both of their asymmetric centers are opposite.
b. the corresponding configurations of both of their asymmetric centers are the same.
c. the configurations of one of their corresponding asymmetric centers are the same, while the other asymmetric centers have opposite configurations.
From the list of the isomers given below, select all the structures which are:
(a) achiral compounds
(b) enantiomers
(c) diastereomers
(d) meso compounds
Identify whether each of the following pairs represents constitutional isomers, enantiomers, diastereomers, or identical compounds.
Identify the specific type of isomerism indicated by the following pair of molecules shown below.
Classify the isomerism in the pair of molecules shown below.
(i) Identify the relationship between the pair of molecules.
(ii) Are the following compounds expected to have different physical properties?
(iii) Identify the absolute configuration of each stereocenter.
For the given structures of a molecule below, determine if they are identical or a pair of enantiomers.
Determine if the given pair of molecules are identical or isomers. If they are isomers, are they enantiomers, diastereomers, or constitutional?
For each of the structures shown below:
i) Draw a version of the structures where two of its groups on the stereocenter swapped positions.
ii) Identify the relationship of the original structure to the new structure.
2-methylpentan-3-yl 2-hydroxybutanoate is produced when (S)-2-hydroxybutanoic acid is esterified by racemic 2-methylpentan-3-ol.
i) Provide the three-dimensional structures of the reactants and of the product formed.
ii) Label the chiral carbons as (R) or (S).
iii) Identify the relationship between the stereoisomers.
Specify the type of isomerism shown in the following pair of molecules.
Identify the following isomers as:
a. chiral compounds
b. cis–trans isomers
c. stereoisomers
d. constitutional isomers
Sketch the mirror image of the structure below. In the new mirror structure, switch the spatial orientation at the chiral center. Identify the relationship between the final structure and the original structure.
Identify the relationship between the structures below.
Consider the following compounds:
(i) (ii)
Draw a three-dimensional structure for each compound. Is the structure chiral or achiral? Draw their mirror image. Determine the relationship between the original structure and its mirror image. (identical or enantiomer)
Determine the number of stereogenic centers and show all stereoisomers of 3-ethyltetrahydrofuran. Label as diastereomers or enantiomers.
For the given pair of molecules, determine the following:
(i) If identical or different in terms of physical properties.
(ii) Isometric relationship between X and Y.
(iii) Absolute configuration of each stereocenter.
Consider a compound with a molecular formula C4H8Cl2O4.
a. Draw the structure of its optically inactive isomer because of the absence of an asymmetric center.
b. Draw the structure of its optically inactive mesomer.