Chemistry 210: Chapter 4 9.26 to 9.30
Chemistry 210: Chapter 4 9.26 to 9.30 CHEM 210
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This 2 page Class Notes was uploaded by Julianna Sickafus on Sunday October 2, 2016. The Class Notes belongs to CHEM 210 at Pennsylvania State University taught by Maslak in Fall 2016. Since its upload, it has received 13 views. For similar materials see Organic Chemistry I in Chemistry at Pennsylvania State University.
Reviews for Chemistry 210: Chapter 4 9.26 to 9.30
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Date Created: 10/02/16
Chemistry 210 Chapter 4 9/26-9/30 Slide 1: Reactions: chlorination of methane -entropy can be neglected in this reaction -this is not the case for every reaction Slide 2: BDE -all numbers are positive -breaking bonds cost energy Slides 4-6 -the grey boxed reactions are favored because of the amount of energy the need/release when compared to other reactions that could occur Slide 10: Stereochemistry of radical reactions -equal in energy -no optical activity Slide 11: Stereochemistry of radical reactions -not equal in energy -has optical activity -enantiomeric excess Slide 12: Selectivity -Br prefers to abstract secondary H 80:1 -reacts 80x faster Slide 13: Origins of selectivity -primary H is stronger bond (according to BDE) -secondary H is easier to abstract thermodynamically -by 3 kcal/mol Slide 14: Selectivity -more stable compounds are produced faster Slide 16: Radical stability -pure p orbitals provide more stability -s character is donated to electron pair NOT radicals -sp hybridized radicals are very reactive -not found in nature -resonance provides stabilization for radicals -hyperconjugation stabilizes radicals
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