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A newly isolated natural product was shown to be optically active. If a solution of 2.0 g in 10 mL of ethanol in a 50 cm tube gives a rotation of +2.57°, what is the specific rotation of this natural product?

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Provide a careful structure for (2S,3S)-2,3-dibromohexane.

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Briefly describe how two enantiomers might be separated.

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The two compounds can be converted to di...

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Identify all pairs of diastereomers. Identify all pairs of diastereomers. A) B and D, A and C B) A and C C) B and D D) A and B, A and D, B and C, C and D E) B and D, A and B, A and D, B and C, C and D


A) B and D, A and C
B) A and C
C) B and D
D) A and B, A and D, B and C, C and D
E) B and D, A and B, A and D, B and C, C and D

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How many asymmetric centers are present in a molecule of 2,4,6-trimethylheptane?


A) 0
B) 1
C) 2
D) 3
E) 4

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Choose the enantiomer of the compound below. Choose the enantiomer of the compound below. A) B) C) D) E)


A) Choose the enantiomer of the compound below. A) B) C) D) E)
B) Choose the enantiomer of the compound below. A) B) C) D) E)
C) Choose the enantiomer of the compound below. A) B) C) D) E)
D) Choose the enantiomer of the compound below. A) B) C) D) E)
E) Choose the enantiomer of the compound below. A) B) C) D) E)

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Draw any diastereomer of (2R,3R)-2,3-dichloropentane. Be careful to indicate proper stereochemistry.

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How many asymmetric centers are present in the compound shown below? How many asymmetric centers are present in the compound shown below? A) 1 B) 2 C) 3 D) 4 E) 5


A) 1
B) 2
C) 3
D) 4
E) 5

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Identify the compounds that have an asymmetric center. Identify the compounds that have an asymmetric center. A) A B) B C) C D) A and B E) A, B, and C


A) A
B) B
C) C
D) A and B
E) A, B, and C

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Indicate whether each of the following structures has the R or S configuration. What is the relationship between the two structures? Indicate whether each of the following structures has the R or S configuration. What is the relationship between the two structures?

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11ea7d6e_066d_9273_8568_176f7052f3de_TB1830_00_TB1830_00 11ea7d6e_066d_9274_8568_9d8e15d19504_TB1830_00_TB1830_00 Therefore, the two compounds are enantiomers.

Draw the stereoisomers of 1,3-dichlorocyclopentane.

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Provide a perspective drawing of the enantiomer of (2R,3S)-1,2,3-trichloropentane.

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The configuration of R-(+) -glyceraldehyde is as follows: The configuration of R-(+) -glyceraldehyde is as follows: What is the absolute configuration of (-) -lactic acid? A) R configuration B) L configuration C) S configuration D) R and S configuration E) D and L configuration What is the absolute configuration of (-) -lactic acid? The configuration of R-(+) -glyceraldehyde is as follows: What is the absolute configuration of (-) -lactic acid? A) R configuration B) L configuration C) S configuration D) R and S configuration E) D and L configuration


A) R configuration
B) L configuration
C) S configuration
D) R and S configuration
E) D and L configuration

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A

What is the relationship between the following compounds? What is the relationship between the following compounds? A) enantiomers B) diastereomers C) constitutional isomers D) conformational isomers E) identical compounds


A) enantiomers
B) diastereomers
C) constitutional isomers
D) conformational isomers
E) identical compounds

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Identify the pair of compounds. Identify the pair of compounds. A) identical B) conformation isomers C) constitutional isomers D) configurational isomers E) none of the above


A) identical
B) conformation isomers
C) constitutional isomers
D) configurational isomers
E) none of the above

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Label each asymmetrical carbon in the compound below as R or S. Label each asymmetrical carbon in the compound below as R or S.

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11ea7d6e_0672_73b0_8568_3b4255cda4ce_TB1830_00_TB1830_00

Draw the enantiomer of the compound below. Draw the enantiomer of the compound below.

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Which of the following terms best describes the pair of compounds shown: enantiomers, diastereomers, or the same compound? Which of the following terms best describes the pair of compounds shown: enantiomers, diastereomers, or the same compound?

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Identify the following compounds as R or S. Identify the following compounds as R or S. A) S, S, R B) S, R, S C) R, S, S D) S, S, S E) R, R, R


A) S, S, R
B) S, R, S
C) R, S, S
D) S, S, S
E) R, R, R

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Which of the following terms best describes the pair of compounds shown: enantiomers, diastereomers, or the same compound? Which of the following terms best describes the pair of compounds shown: enantiomers, diastereomers, or the same compound?

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