final-2007-2008

final-2007-2008 - CHEM111 FINAL EXAM (Fall 2007) Name:...

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1 CHEM111 FINAL EXAM (Fall 2007) Name: (English) (Chinese) Student ID No. Problem Value Score. 1 36 2 54 3 40 4 60 5 80 6 60 7 60 8 60 ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ Total 450 Note: This is a close-book examination. You are required to answer ALL questions. Please write answers on the exam. Use blank space as scratch paper. Maximum time is 180 min. 1. Name the configuration of the chiral centers in the following compounds:(36 points) O HO H H H H OH H 1 2 3 4 5 H CH 3 H 3 H H H 3 8 9 10 13 14 17 C 1 : ; C 2 : ; C 3 : 4 : ; C 5 : . D-Galactose C 3 : ; C 8 : ; C 9 : ; C : ; C : ; C : ; C : . Cholesterol
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2 2. Multiple choices. There is only one correct answer for each of the following questions, unless stated otherwise. (54 pts) (1). Which of following statement is correct about the molecule shown below: ( ) A. A meso compound; B. Optically active because it contains chiral centers; C. Optically inactive because it does not contain any chiral centers; D. There is not a plane of symmetry for the structure; E. It does not have stereoisomers. (2). For the following reaction, from which prochiral side of the carbon-3 in the starting material does the hydroxyl group (OH - ) attack? ( ) A. pro-R side; B. pro-S side; C. si face; D. re face; E. None of the above. (3). Which of the following statements is correct about the outcome of the shown reaction: ( ) A. Two diasteromers are formed; B. A racemic mixture is formed; C. Achiral compounds are formed; D. Two enantiomers are formed; E. None of the above.
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This note was uploaded on 02/27/2010 for the course CHEM CHEM111 taught by Professor Dai during the Fall '06 term at HKUST.

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final-2007-2008 - CHEM111 FINAL EXAM (Fall 2007) Name:...

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