Ch. 3-2, Alkenes Structure and Reactivity (1)

Ch. 3-2, Alkenes Structure and Reactivity (1) - Organic...

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Organic Chemistry M. R. Naimi-Jamal Faculty of Chemistry Iran University of Science & Technology
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 Chapter 3. Continue  Alkenes: Structure and Reactivity Based on McMurry’s  Organic Chemistry , 6 th  edition
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3 Alkene - Hydrocarbon With Carbon- Carbon Double Bond Includes many naturally occurring materials Flavors, fragrances, vitamins Important industrial products These are feedstocks for industrial processes
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4 Alkenes
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5 6.2 Degree of Unsaturation Relates molecular formula to possible structures Degree of unsaturation: number of multiple bonds  or rings Formula for saturated a acyclic compound is  C n H 2n+2 Each ring or multiple bond replaces 2 H's
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6 Degree of Unsaturation
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7 Example: C 6 H 10 Saturated is C 6 H 14 Therefore 4 H's are  missing This has two degrees  of unsaturation Two double bonds? or triple bond? or two rings or ring and double  bond H 3 C C C C C CH 3 H H H H H H H H
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8 Compounds with the same degree of unsaturation can  have many things in common and still be very different Degree of Unsaturation and Variation
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9 Add number of halogens to number of H's  (X equivalent to H) Don't count oxygens (oxygen links H) Summary - Degree of Unsaturation  2 2 2 N H C on Unsaturati of Degree + - + =
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10 6.3 Naming of Alkenes Find longest continuous carbon chain for root
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Ch. 3-2, Alkenes Structure and Reactivity (1) - Organic...

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