exam # 3 organic(2)

exam # 3 organic(2) - Chem 2220 Spring/Summer 2006 Section...

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Chem 2220 Exam 3 100pts Name_______________ Spring/Summer 2006 (3pt) Circle your T.A./ Quiz Section Section 1: 9:15-10:15, M 111 State Asare-Okai Section 4: 10:30-11:30, Th 131 State Asare-Okai Section 2: 9:15-10:15, M 114 State Bittencourt Section 5: 9:15-10:15, M 219 State Rijal Section 3: 10:30-11:25, T 131 State Rijal Section 6: 10:30-11:25, T 219 State Bittencourt 1. (17pt) d-mannose is a C-2 epimer of the aldohexose d-glucose. Sketch d-mannose as: i) Fischer projection ii) Haworth projection as a β -pyranose iii) Haworth projection as an α -furanose Identify the anomeric carbon in part (ii) and (iii)
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2. (8pt) Xylulose is an example of an ketopentose. How many chirality centers does a ketopentose have? How many stereoisomers does this generate? Draw all the stereoisomers for the ketopentose series as Fischer projections. 3. (10pt) Sketch and identify (by name and 3 letter symbol): i) an amino acid with a hydrophobic side group, in acidic solution ii) an amino acid with an acidic side group, in basic solution
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4. (14pt)
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This note was uploaded on 09/19/2008 for the course CHM 2220 taught by Professor Andreana during the Spring '08 term at Wayne State University.

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exam # 3 organic(2) - Chem 2220 Spring/Summer 2006 Section...

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