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CHEM 2211 1st Edition Lecture 20 Outline of Last Lecture I Summary of reaction mechanisms Outline of Current Lecture I II Alkyne introduction Naming Current Lecture I Alkyne introduction A Means there are triple bonds present B Less reactive than double bonds C sp hybridized carbons D Have 180 geometry when drawn Red dots represent the carbons This molecule has 6 carbons II Naming A Same as alkanes B Identify the parent chain must include triple bond i Drop the ane ending and add yne 5 methyl 3 heptyne C If both a triple and double bond are present on the molecule the parent chain is the longest carbon chain that includes both i Ending is enyne 3 methyl 1 hepten 4 yne
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