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Unformatted text preview: name ______________________________ Page 1 of 2 1. Draw a line structure of (2R,3S)-2-chloro-3-bromobutane. Draw a Fisher projection of the same molecule. (4 pts) Br Cl H Cl H 3 C H H 3 C Br CH 3 H Cl CH 3 Br H 2. Draw all possible stereoisomeric products for the following reactions. What is the stereochemical relationship of the products? (8 pts) H 3 C H 1) OsO 4 2) NaHSO 3 optically active CH 3 OH OH CH 3 OH OH + diastereomers 1) Hg(OAc) 2 , H 2 O 2) NaBH 4 + OH OH enantiomers 3. 0.100 Grams of an optically active substance with a molecular weight of 500 was dissolved in 10 mL of methanol. The optical rotation of the sample was measured at 589 nm (the D-line of a sodium lamp) and 25 C through a 1 dm pathlength and determined to be - 0.50. Calculate the specific rotation of the substance. Give the proper symbol for the specific rotation under these conditions. (5 pts) [ ] D 25 = c l =- 0.50 (0.100/10) (1) = - 50 name ______________________________ Page 2 of 2 4. Give the product(s) for the following reaction. Give the product(s) for the following reaction....
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