Organic Chemistry
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Consider the following molecules:
Draw a mirror image for each of the two molecules. Determine whether the mirror image is the same molecule or the enantiomer of the original molecule. If there is any symmetry plane present, draw the plane.
Consider the following set of Fischer formulas:
Use the first structure as the model and identify its relationship with the rest of the structures in this set.Identify relationships as: Same molecules, constitutional isomer, enantiomer, or diastereomer.
Transform the Fischer projections below into bond-line structure formulas:
Transform the structural formulas below into Fischer projection formulas:
An error was made when attempting to view the line-angle structure of L-Threose from a specified direction in order to convert it to the Fischer projection. What was the error?
Transform the following line-angle representation into its corresponding Fischer projection.
What is the Fischer projection for the given structure?
From the following line-angle structure, provide its corresponding Fischer projection.
Sketch the Fischer projection for the given structure.
Draw the given Fischer projection as a dashed-wedged line structure.
Draw the Fischer projection below as a dashed-wedged line structure.
i) There is only one ketotetrose. Draw its structure and the possible stereoisomers.
ii) There are two aldotetroses. Draw their structures and the possible stereoisomers.
Determine the relationship of each structure to the first structure. Are they identical or enantiomers of one another?
Consider the following compounds:
(i) (R,R)-2,3-dichlorobutane
(ii)
Using Fischer projections, draw each compound in its most symmetric conformation. Draw any mirror plane. Star (*) any asymmetric carbon. Indicate if the compound is chiral. Label any meso compounds.
Transform the structures below into Fischer projections.
Transform the Fischer projections below into line-angle formulas.
Provide the Fischer projection of (R)-2,5-dihydroxypentanoic acid. (The cross represents a chiral carbon, and the IUPAC numbering should be from top to bottom.)
Are these enantiomers or diastereomers?
Determine the relationship between the two compounds in each of the following pairs of compounds. Use models if necessary.
For the following compound:
(i) write the structure of all the stereoisomers and label each of them as achiral or chiral.
(ii) identify the relationships between the stereoisomers.
Identify the relationship between each pair (identical compounds, constitutional isomers, diastereomers, or enantiomers). Identify the pair that can theoretically be separated by recrystallization or distillation, if any.
For the given pair of molecules below:
Determine if they are identical or isomers. If they are isomers, are they enantiomers, diastereomers, or constitutional?
Identify the relationship between the molecules.