CHEM 281 Study Guide - Quiz Guide: Specific Rotation, Carvone, Spearmint
10 Dec 2018
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Cl: in class we learned that although chiral molecules share many of the same physical properties, their interactions with plane-polarized light are unique. Below are two examples of chiral molecules whose enantiomers demonstrate additional unique or detrimental properties: please draw a chemical structure for both enantiomers of thalidomide and point out which enantiomer is (r) and which is (s). Also, describe how a lack of appreciation for the unique properties of enantiomers led to serious side effects when this molecule was used as a racemic drug. Roughly, what percentage of current drugs on the market are chiral: the unique smells of spearmint leaves and caraway seeds can be attributed to the same molecule carvone. Instead of starting over, he decided to add 1. 1 gram of the correct enantiomer a, figuring this would correct the problem (leaving him with 1 gram of pure a and 0. 2 grams of a mixture).
