ACS Review 7 Stereochemistry

ACS Review 7 Stereochemistry - ACS Review Stereochemistry...

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ACS Review Stereochemistry 1. Which of the molecules below are chiral? A. only II B. only III C. I and III D. II and III 2. Which of the molecules below are chiral? A. only I B. I and III C. II and III D. I, II, and III 3. Identify the chiral compound(s) below. A. only II B. II and III C. III and IV D. I, II, and IV 4. Which of the following molecules are chiral? A. only II B. only III C. II and III
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D. I, II, and III 5. How many stereogenic centers are there in the following molecule? A. only 1 B. two C. three D. four 6. How many stereogenic centers are there in the following molecule? A. only 1 B. two C. three D. four 7. Give the configurations, respectively, of the following two molecules. A. R and R B. R and S C. S and S D. S and R 8. Give the configurations, respectively, of the following two molecules. A. R and R B. R and S C. S and S D. S and R 9. Which one of the following groups has the highest rank as assigned by the Cahn-Ingold-Prelog system for stereogenic carbons? A. -CH=CH 2 B. -CH 2 OH C. -CH=O
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D. -CH 2 SH 10. Give the configurations of carbons 1 and 2, respectively, in the structure shown below. A. R and R B. R and S C. S and S D. S and R 11. What is the IUPAC name of the following compound. A. (2S, 3S)-2,3-dibromopentane B. (2S, 3R)-2,3-dibromopentane C. (2R, 3S)-2,3-dibromopentane D. (2R, 3R)-2,3-dibromopentane 12. Which of the following statements are true. I. If a molecule has a plane of symmetry it is achiral. II. If a molecule has a center of symmetry it is achiral. III. If a molecule has one stereogenic center it is chiral. A. I and II B. I and III C. II and III D. I, II, and III 13. What is the relationship between the following two molecules? A. identical B. enantiomers C. diastereomers D. constitutional isomers 14. What are the configurations of carbons 2 and 3 in the Fischer projection below.
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A. 2R, 3R B. 2R, 3S C. 2S, 3R D. 2S, 3S 15. Compound X, C 5 H 10 O, is optically active. The compound consumes one equivalent of hydrogen to give C 5 H 12 O. The hydrogenation product is also optically active. Which compound below matches the information?
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This note was uploaded on 12/17/2010 for the course CHEM 101 taught by Professor Silva during the Spring '08 term at Binghamton University.

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ACS Review 7 Stereochemistry - ACS Review Stereochemistry...

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