lecture10_s05

lecture10_s05 - 5.12 Lecture 5.12 Lecture 10 10 IX. Alkenes...

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Unformatted text preview: 5.12 Lecture 5.12 Lecture 10 10 IX. Alkenes Suggested Reading: Chapter 6 and 9.12 A. Structure Suggested Problems: 6.23-6.29, 6.33, 6.36, B. Degrees of Unsaturation 6.39-6.45, 6.47-6.54 C. Nomenclature D. Double Bond Geometry 1. Configurational isomers ( cis- trans ) 2. E- Z Designation E. Stability F. Cycloalkenes G. Example: Addition of H-X to an Alkene 1. Regiospecificity 2. Carbocation Stability (Hyperconjugation, Inductive Effects) 3. Hammond Postulate 4. Stereochemistry 5. Carbocation Rearrangements Alkenes! Alkenes! limonene multifidene a-farnesene sex attractant of brown algae waxy coat on apples lemon and orange oils b-carotene orange pigment found in carrots muscalure pheromone of house fly Calculating the Degrees of Unsaturation from a Molecular Formula Alkane: C n H 2n+2 Alkene: C n H 2n (fewer hydrogen atoms) Degrees of unsaturation = number of rings and/or multiple bonds 1 degree of unsaturation = 1 ring or 1 double bond 2 degrees of unsaturation = 2 double bonds, 2 rings, 1 ring + 1 double bond, or 1 triple bond...
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lecture10_s05 - 5.12 Lecture 5.12 Lecture 10 10 IX. Alkenes...

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