Summer 2007 Test 2

Summer 2007 Test 2 - Chem 227 Test 2 Dr. Wells Summer I...

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Chem 227 Test 2 Name: F.S. Key . Dr. Wells Summer I 2007. score = opscan * 70/10 + essay = 10 * 70/10 + 30 = 100 Wow! Have you considered becoming a professional chiralist? Essay A (5 points). Give R and S designations for each stereocenter in the molecules below. I C (R) F Br H H C (R) F I Cl CH 2 CH 2 CH 3 C (R) HO CH 2 CH 3 3 C (R) F Br H C (S) I F Cl Essay B (5 points). What is the maximum number of stereoisomers for the compound below? Show your work and explain. OH * * 2stereocenters=n max number of steroisomers = 2 n =2 2 =4
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Essay C (10 points). CH 3 H C (R) C (R) Cl Br H CH 3 12 3 4 CH 3 H C (R) C (S) Cl CH 3 H Br CH 3 H C (S) C (S) H CH 3 Cl Br CH 3 H C (R) C (S) Cl CH 3 H Br R R 5 Complete the relationship table below using the following relationships: identical and meso identical but not meso enantiomers diastereomers constitutional isomers not isomers compounds relationship 1 and 2 diastereomers 1 and 3 1 and 5 enantiomers 2 and 3 identical but not meso 3 and 4 3 and 5 Name compounds 1 , 2 , 3 , 4 , and 5 . Use R and S where necessary.
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Summer 2007 Test 2 - Chem 227 Test 2 Dr. Wells Summer I...

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