CHEM 210 Lecture 18: Optical Activity and Stereosites

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31 Mar 2015
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Chem 210: structure and reactivity - lecture 18: optical activity and stereosites. Enantiomers have equal magnitude but opposite in sign optical activity. If you know the optical activity of one, you know the other! Racemic mixture: an equal concentration of two enantiomers. Electronic addition reaction: racemic mixtures at c+ Meso: an achiral molecule that contains chiral sites that are enantiomeric and cancel each other. Must be symmetrical both in configuration and stereochem. Different molecules that share the same connectivity. Enantiomers (pair)- non superimposable mirror images different at all chiral sites. Diastereomers: any pair relationship that is not enantiomeric.