CHM201H--T2_Key - CHM 201- Organic Chemistry I Answers on...

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CHM 201- Organic Chemistry I Exam 2 Key Answers on last page. Questions 1-8. For each pair of structures shown, indicate their relationship from the answer choices below. Answers can be used more than once. 1. 2. 3. 4. 5. 6. 7. 8. 9. Discodermolide, shown below, has how many chiral carbons? a. 9 or less b. 10 c. 11 d. 12 e. 13 or more 10. Assign R/S configurations to carbons A and B, respectively in the compound shown below. For your convenience, the molecule is shown twice so you can do your assignments separately. a. R, R b. R, S c. S, R d. S, S 1 F H CH 3 H H F H CH 3 OH OH CH 2 Cl H F OH CH 2 Cl F OH H OH CH 3 H OH CH 3 H OH CH 3 H OH CH 3 H OH HO O O OH HO OH OH O O NH 2 CH 2 CH 3 OH H H HO CH 3 A B CH 2 CH 3 OH H H HO CH 3 A B NH 2 OH NH 2 HO (a) constitutional isomers (b) enantiomers (c) diastereomers (d) different compounds that are not isomers (e) identical compounds
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11. The observed specific rotation of a mixture (of unknown proportions) of a pair of pure enantiomers was determined to be -10°. If the known specific rotation of the pure dextrorotatory enantiomer is +50°, what is the relative composition of the mixture? a.
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CHM201H--T2_Key - CHM 201- Organic Chemistry I Answers on...

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