stereoisomerism quiz 9 - a CH 3 H C 6 H 5 CH 3 CH 2 c CH 3...

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Names:_____________________________ CH 2010 Quiz 9 1. Which of the following substances contain stereogenic centers? Drawing the structures will help you answer this question. a. 1,2-dichloropropane b. 2,2-dichlorobutane c. 2-methylpentane d. 2,3-dimethylhexane e. methylcyclobutane 2. Locate with an asterisk the stereogenic centers (if any) in the following structures. a. CH 3 CHClCF 3 b. CH 2 (OH)CH(OH)CH(OH)CHO c. C 6 H 5 CH(OH)CO 2 H 3. Tell whether the following structures are identical or enantiomers. 4. Place the members of the following groups in order of decreasing priority according to the R-S convention. (1 = highest, 4 = lowest)
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Unformatted text preview: a. CH 3-, H-, C 6 H 5-, CH 3 CH 2-, c. CH 3 CH 2-, CH 3 CH 2 CH 2-, CH 2 =CH-, O=CH-__ __ __ __ ___ ___ ___ ___ b. H-, CH 3-, HS-, I-d. CH 3-, HO-, BrCH 2-, HOCH 2- __ __ __ __ __ __ __ __ 5. is an antibiotic that is particularly effective against typhoid fever. What is the configuration (R,S) at each stereogenic center? 6. Which of the molecules below are chiral? There could be more than one. 7. How many stereogenic centers are there in the following molecule? Identify them with an asterisk....
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