Chapter 5: Q. 75 E (page 148)
We’ll see in Chapter 11 that alkyl halides react with hydrosulfide ion () to give a product whose stereochemistry is inverted from that of the reactant.
Short Answer
Stereochemistry of obtained product is .
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Chapter 5: Q. 75 E (page 148)
We’ll see in Chapter 11 that alkyl halides react with hydrosulfide ion () to give a product whose stereochemistry is inverted from that of the reactant.
Stereochemistry of obtained product is .
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Draw the meso form of each of the following molecules, and indicate the plane of symmetry in each:
(a)

(b)

(c)

Question:Is cocaine (Worked Example 5-2) dextrorotatory or levorotatory?
Assign R or S stereochemistry to the chirality centers in the following
Newman projections:

Draw both cis- and trans-1,4-dimethylcyclohexane in their more stable chair conformations.
(a) How many stereoisomers are there of cis-1,4-dimethylcyclohexane, and how many of trans-1,4-dimethylcyclohexane?
(b) Are any of the structures chiral?
(c) What are the stereochemical relationships among the various stereoisomers of 1,4-dimethylcyclohexane?
Ribose, an essential part of ribonucleic acid (RNA), has the following structure:

(a) How many chirality centers does ribose have? Identify them.
(b) How many stereoisomers of ribose are there?
(c) Draw the structure of the enantiomer of ribose.
(d) Draw the structure of a diastereomer of ribose.
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