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PRACTICE QUESTIONS FOR CH. 5
PART I
- Is the molecule shown below chiral or achiral?
OH
OH
- Is the molecule shown below chiral or achiral?
C C C
H
H CO^2 OH
CH 3
- Is the molecule shown below chiral or achiral?
C
CH 2 OH
HO 2 C H CO 2 H
- Is the molecule shown below chiral or achiral?
Cl
- Is the molecule shown below chiral or achiral?
CH 3
CH 3
O
- diastereomers, or the same compound Which of the following terms best describes the pair of compounds shown: enantiomers,?
C
CH 3
H NH
2
CO 2 H
CO 2 OH
CH 3
H 2 N H
- diastereomers, or the same compound Which of the following terms best describes the pair of compounds shown: enantiomers,?
CH 3 H 3 C
OH
HO
- Label each asymmetric carbon in the compound below as R or S.
OH
CH 3
- Label each asymmetric carbon in the compound below as R or S.
OH
H CH 3
OH
H CH 3
- Label each assymetric carbon in the compound below as R or S.
Cl
11)dimensional stereochemical detail properly. Draw the structure of (2 R ,3 S )-2,3-dichloropentane. Take particular care to indicate three-
12)dimensional stereochemical detail properly. Draw the structure of ( S )-1-bromo-1-chloropropane. Take particular care to indicate three-
13)indicate three-dimensional stereochemical detail properly. Draw the structure of a meso form of 1,3-dichlorocyclopentane. Take particular care to
- How many asymmetric carbons are present in the compound below?
CH 3
H
23)briefly. Is it theoretically possible to separate the pair of compounds below by distillation? Explain
O
CH 3
Br
O
CH 3
Br
Draw the Fischer projection of ( S )-2-hydroxybutanoic acid, CH3CH2CH(OH)COOH.
How many enantiomers are there of the molecule shown below?
OH
OH
A. 6 B. 2 C. 0 D. 1 E. 3
- diastereomers, or the same compound Which of the following terms best describes the pair of compounds shown: enantiomers,?
Cl
H 3 C H
Cl
H CH 3
Cl
Cl
- diastereomers, or the same compound Which of the following terms best describes the pair of compounds shown: enantiomers,?
Br
H 3 C CHH 2 CH 3
CH 3
CH 2 CH 3
H Br
- Label each asymmetric carbon in the molecule below as having the R or S configuration.
H
H
H 3 C
HO 2 C
CH 2 CH 3
F
ANSWERS
- achiral
- achiral
- achiral
- achiral
- chiral
- the same compound
- enantiomers
