Chapter6SC - Organic Chemistry 5th Edition Paula Yurkanis...

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Reactions of Alkynes Chapter 6 Organic Chemistry 5 th Edition Paula Yurkanis Bruice
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More Carbocation Stability For reactions that proceed through a carbocation intermediate, an alkene will react before an alkyne (they are more reactive.) An alkyne is less stable than an alkene, but it is also less reactive because the vinylic carbocations are less stable. Section 6.5
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Reaction with Halogen Acids Alkynes can undergo the same chemical reactions that alkenes do. Predict the major organic product(s) of the following reactions. Section 6.6 + HI + HBr + HCl
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Reactions of Alkynes Predict the products of the following reactions with excess hydrogen halide (more than one equivalent). Section 6.6 + HI + HBr + HCl 2 2 2
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Keto–Enol Tautomerism • When an alkyne is used as the starting material with an acid catalyst and water, an enol is produced. • An enol is not stable at neutral pH; therefore, it will tautomerize (rearrange.) Section 6.7 + H 2 O H +
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This note was uploaded on 05/31/2011 for the course CHEM 3341 taught by Professor Staff during the Spring '08 term at Georgia Southern University .

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Chapter6SC - Organic Chemistry 5th Edition Paula Yurkanis...

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