Ch.5 Practice

Ch.5 Practice - OMe OMe HOOC COOH Chemistry 233 Spring 2008...

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Chapter 5 (Practice) Bennett Department of Chemistry West Virginia University February 24 th , 2008 Name:______________________________________ This exam is a closed book, closed notes. Calculators and a molecular model set are allowed. You must show your work in order to receive partial credited.
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Chemistry 233 Spring 2008 1 Question 1 (20 points): 1a) How many stereogenic centers in the following molecules (note: it could be 0) (5 points). CH 3 CH 2 CH 2 CH(CH 3 )CH(sec-Bu)CH 2 CH(CH 3 )CH 2 CH 3 i-Pr CHClBr OMe OMe OMe HOOC COOH HOOC COOH 1b) Label R/S for each stereogenic center above (4 points). 1c) Draw enantiomers for the following molecules (3 points). i-Pr CHClBr OMe OMe HOOC COOH 1c) Draw one diastereomer for the following molecules (3 points). i-Pr CHClBr
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Unformatted text preview: OMe OMe HOOC COOH Chemistry 233 Spring 2008 2 Question 2 (21 points): Indicate whether the following molecules are chiral. If it is chiral, draw the enantiomer. (5 points). CH 3 CH 2 CH 2 CH(CH 3 )CH(sec-Bu)CH 2 CH(CH 3 )CH 2 CH 3 i-Pr CHClBr OMe OMe OMe HOOC COOH HOOC COOH OMe HOOC COOH OH OH HOOC COOH OH OH O O O C H H H 3 C Br O O OH HO Question 3 (18 points): 3a) Give two examples of chiral molecules with no stereogenic centers(10 points). 3b) Give two examples of achiral molecules with stereogenic centers(10 points). 3c) give an example of two diastereomers with no stereogenic center (2 points). 3c) give two examples of two meso compounds, one cyclic, one acyclic (2 points)....
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This note was uploaded on 04/26/2008 for the course CHEM 233 taught by Professor Shi during the Spring '08 term at WVU.

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Ch.5 Practice - OMe OMe HOOC COOH Chemistry 233 Spring 2008...

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