C357_PPS_8_Solutions_2007 - C357 PPS#8 Solutions Page 1 of...

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C357 PPS#8 Solutions Page 1 of 2 1) For each of the following compounds, decide which carbon atoms are stereocenters and then assign the absolute configuration (R,S) of each. 2) Describe how d and l configurations are determined for individual molecules. How compounds rotate plane polarized light 3) Does the d,l system have any relationship to the R,S system? If so, is a d molecule R or S? No. 4) Define an enantiomer. Non-superimposable mirror image. 5) What is a chiral compound? A compound that has an enantiomer. 6) Define Meso. A compound with >1 stereocenter that is achiral (has internal plane of symmetry. 7) Do all compounds rotate plane-polarized light? If so, why do pure chiral compounds show a net rotation of the light? All compounds rotate plane-polarized light. Chiral compounds show a net rotation because their mirror image is not present! H CH 3 Cl Br CH 2 CH 3 CH 3 H OH H Cl H Cl H Cl H H CH 3 Cl H Cl
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This note was uploaded on 09/28/2008 for the course CHEM 3570 taught by Professor Ganem, b during the Fall '06 term at Cornell University (Engineering School).

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C357_PPS_8_Solutions_2007 - C357 PPS#8 Solutions Page 1 of...

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