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Exam 5: Stereoisomerism

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Question 21

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Which of the following choices is a diastereomer of the first structure shown.

A)
B)
C)
D)

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Question 22

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What is the relationship between the two structures shown?

A) Same compound
B) Enantiomers
C) Diastereomers
D) None of these

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Question 23

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Which of the following is the correct structure for the compound (R) -2-pentanol?

What is the percentage of the R enantiomer in a sample of limonene that has a specific rotation of −38, given that the specific rotation of (S)-limonene is −116?

What is the relationship between the following two molecules?

Draw the enantiomer of the following compound.

Redraw the structure below as a wedge-dash structure and label all stereocenters with their absolute configuration.

What is the percentage of the R enantiomer in a sample of carvone that has a specific rotation of −20, given that the specific rotation of (R) -carvone is −61?

What is the percentage of the S enantiomer in a sample of carvone that has a specific rotation of 30, given that the specific rotation of (R) -carvone is −61?

Drawn below is the structure of Crestor® (rosuvastatin), a medication used to reduce cholesterol. Assign the absolute configurations of the two chirality centers as R or S.

Shown below is the structure of Crestor (rosuvastatin), a medication used to reduce cholesterol. Is the highlighted alkene of rosuvastatin cis, trans, or neither?

Draw the Fischer projection of the following compound.

Draw all the isomers with molecular formula C₄H₆.

Draw the enantiomer of the following compound.

Draw the structure of the compound (S)-3-methylheptane.

Assign the absolute configuration of the chirality center as R or S.

Identify the relationship between the following two structures.

If a sample of carvone gives a specific rotation of 0 and the specific rotation of pure (R)-carvone is −61, what is the configuration of the unknown sample?

Locate the chirality center(s) in the following compound.

Assign the absolute configuration of the chirality center as R or S.