practice-4-revised

practice-4-revised - found that the pure major enantiomer...

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Practice Exam 4 - revised (9/23/10) IV. Draw the mirror image of A and determine if it is optically active (circle one). A mirror image III. Show the stereochemistry of each stereocenter by labeling R or S next to it. OMe H Br OH H Me CHO OH H Me HO H HO Me I. Provide the stereochemisty by either R or S conFguration on the designated carbon. Carbon in the back bearing H, Br, and OMe group Carbon in the middle bearing HO and Me II. Given the following compound name, draw a valid structure. 5-( S )-chloro-6-( R )-hepten-3-ol enantiomer or meso HO Br H Cl H
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V. A medicinal chemist discovered a new drug in an optically active form, however not optically pure. The specific rotation of this drug sample was +9.9 degree, and it was later
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Unformatted text preview: found that the pure major enantiomer of this drug exhibited +10.0 degree. What is the % ee of this drug sample? How many percent of this new drug was the major enantiomer? % of the major enantiomer % ee of the drug VI. Circle the chiral molecules. OH O C Me H H Me O O Me Br H Br H Me VII. Answer the following questions regarding ( 2S,3R )-2,3-dibromopentane. a. Draw the three dimensional structure of ( 2S,3R )-2,3-dibromopentane using the wedge-and-dash method. b. Draw only the diastereomers of ( 2S,3R )-2,3-dibromopentane....
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practice-4-revised - found that the pure major enantiomer...

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