1,1'-Bi-2-naphthol is a chiral compound, and its enantiomers can be separated from each other. The enantiomer shown here has a specific rotation of – 32.70° in tetrahydrofuran. (Notice that the two fused-ring systems are not in the same plane. In the top ring system, the left side is in front of the plane of the page, whereas in the bottom ring system, the right side is in front.) HO, OH 1,1'-Bi-2-naphthol (a) How many chiral centers does 1,1'-bi-2-naphthol have? (b) Draw the enantiomer of the molecule shown. What is its specific rotation? (c) Aside from being mirror images of each other, how else are the two enantiomers related? Why do you think they do not readily interconvert? Hint: It may help to construct a molecular model.

Organic Chemistry: A Guided Inquiry
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ISBN:9780618974122
Author:Andrei Straumanis
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Chapter12: Chirality
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1,1'-Bi-2-naphthol is a chiral compound, and its enantiomers can be separated from each other. The enantiomer shown
here has a specific rotation of – 32.70° in tetrahydrofuran. (Notice that the two fused-ring systems are not in the same
plane. In the top ring system, the left side is in front of the plane of the page, whereas in the bottom ring system, the
right side is in front.)
HO,
OH
1,1'-Bi-2-naphthol
(a) How many chiral centers does 1,1'-bi-2-naphthol have?
(b) Draw the enantiomer of the molecule shown. What is its specific rotation?
(c) Aside from being mirror images of each other, how else are the two enantiomers related? Why do you think they do
not readily interconvert? Hint: It may help to construct a molecular model.
Transcribed Image Text:1,1'-Bi-2-naphthol is a chiral compound, and its enantiomers can be separated from each other. The enantiomer shown here has a specific rotation of – 32.70° in tetrahydrofuran. (Notice that the two fused-ring systems are not in the same plane. In the top ring system, the left side is in front of the plane of the page, whereas in the bottom ring system, the right side is in front.) HO, OH 1,1'-Bi-2-naphthol (a) How many chiral centers does 1,1'-bi-2-naphthol have? (b) Draw the enantiomer of the molecule shown. What is its specific rotation? (c) Aside from being mirror images of each other, how else are the two enantiomers related? Why do you think they do not readily interconvert? Hint: It may help to construct a molecular model.
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