Chapter 9 : Alkynes

Summary

• Alkynes undergo addition reactions in an analogous fashion to those of alkenes.
• The high electron density of the π bonds makes them nucleophilic.
• Two factors influence the relative reactivity of alkynes compared to alkenes:

1. increased nucleophilicity of the starting π system (C≡C  vs  C=C), and
2. stability of any intermediates (for example carbocations)

Reactions

• Hydrogenation
• Dissolving Metal reduction
• Hydrohalogenation
• Hydration
• Halogenation
• Ozonolysis

© Dr. Ian Hunt, Department of Chemistry