ch 4-5 - Chapter 4 and 5 Review Stereoisomerism of Cyclic...

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Chapter 4 and 5 Review Stereoisomerism of Cyclic Compounds
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Let’s take a step back… Molecules are assembled according to rules governing bond formation – Coulomb’s Law, bonding theories… Molecular skeletons take up shapes according to spatial and electronic requirements The tetrahedral carbon center is the origin of the shape of hydrocarbons and has inherent symmetry elements depending on substituents attached. The steric and electronic properties of molecules determines their shape and their reactivity. Reactions often occur at weak bonds or polar functionalities.
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Smoke and Mirrors? Why do we care about stereochemistry? Why are we learning about it now? The steric and electronic “shape” of a molecule determines its reactivity Reactivity and physical properties of molecules is what chemistry is all about. Stereochemistry has important consequences for reactivity Molecules do not have to be chiral to be interesting, but when they are, the different stereoisomers have importantly different chemistry
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This note was uploaded on 10/22/2009 for the course CHEM 140A taught by Professor Whiteshell during the Spring '04 term at UCSD.

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ch 4-5 - Chapter 4 and 5 Review Stereoisomerism of Cyclic...

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