Chapter 4: Q4P (page 146)
Draw skeletal structures for the compounds in Problem 3, including any cis-trans isomers.
Short Answer
The skeletal structures for the compounds in Problem 3, including any cis-trans isomers

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Chapter 4: Q4P (page 146)
Draw skeletal structures for the compounds in Problem 3, including any cis-trans isomers.
The skeletal structures for the compounds in Problem 3, including any cis-trans isomers

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Explain why compound A has two stereoisomers but compounds B and C exist as single compounds.

a. Stereoisomers with two asymmetric centres are called ___ if the configuration of both asymmetric centers in one stereoisomer is the opposite of the configuration of the asymmetric centers in the other stereoisomer.
b. Stereoisomers with two asymmetric centers are called ___ if the configuration of both asymmetric centers in one stereoisomer is the same as the configuration of the asymmetric centers in the other stereoisomer.
c. Stereoisomers with two asymmetric centers are called ___ if one of the asymmetric centers has the same configuration in both stereoisomers and the other asymmetric center has the opposite configuration in the two stereoisomers.
The stereoisomer of cholesterol found in nature is shown here.

a. How many asymmetric centers does cholesterol have?
b. What is the maximum number of stereoisomers that cholesterol can have?
What is the configuration of each of the following?
a.

b.

c.

d.

Naproxen, a nonsteroidal anti-inflammatory drug that is the active ingredient in Aleve (p. 115), has a specific rotation of +66. One commercial preparation result in a mixture with a 97% enantiomeric excess.
a. Does naproxen have the R or the S configuration?
b. What percent of each enantiomer is obtained from the commercial preparation?
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