Organic Chemistry: Structure and Function

Ch08 Lecture
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Chapter 8 Reactions of Dienes Ultraviolet and Visible Spectroscopy Organic Chemistry 4 th Edition Paula Yurkanis Bruice Irene Lee Case Western Reserve University Cleveland, OH
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Hydrocarbon containing two double bonds: diene three double bonds: triene four double bonds: tetraene many double bonds: polyene
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Different Kinds of Dienes
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Nomenclature of Alkenes with More than One Functional Group 1. Identify the longest continuous chain containing both double bonds 2. Give the double bonds the lowest possible number 3. The numbers indicating the double bonds are cited either before the name of the parent compound or before the suffix 4. Substituents are cited in alphabetical order
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When the double bonds are a double bond and a triple bond
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If there is a tie, the double bond gets the lowest number
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H 2 C CHCH 2 OH CH 3 C CHCH 2 CH 2 OH CH 3 H 2 C CHCH 2 CH 2 CH 2 CHCH 3 NH 2 OH CH 3 NH 2 2-propen-1-ol 4-methyl-3-penten-1-ol 6-hepten-2-amine 6-methyl-2-cyclohexanol 3-cyclohexenamine A chain is numbered to give the lowest number to the functional group with the highest priority
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Configurational Isomers of Dienes The Z isomer has the high-priority groups on the same side
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diene? The closer the electrons are to the nucleus, the shorter
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