Demo presentation - alkynes
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Alkynes are unsaturated hydrocarbons containing a carbon-carbon triple bond. They have the general formula CnH2n-2. The IUPAC system names alkynes by adding the suffix -yne, which indicates the presence of a triple bond. Higher alkynes are named by numbering the longest carbon chain containing the triple bond from the end that gives the lower set of numbers to the triply bonded carbons.
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Demo presentation - alkynes
- 1. Page 0 Alkynes March 4, 2014
- 2. Page 1 Objectives: 1. Define alkynes 2. Name alkynes using the IUPAC system of nomenclature
- 3. Page 2 What is an alkyne?
- 4. Page 3 Alkyne An unsaturated hydrocarbon that contains a carbon – carbon triple bond
- 6. Page 5 Naming Alkynes The key to the IUPAC name of an alkyne is the ending –yne, which shows the presence of a carbon-carbon triple bond.
- 7. Page 6 Examples HC CH Ethyne CH3C CH Propyne
- 8. Page 7 Naming Alkynes 1. In higher alkynes, number the longest carbon chain that contains the triple bond from the end that gives the lower set of numbers to the triply bonded carbons. Indicate the location of the triple bond by the number of its first carbon atom.
- 9. Page 8 Naming Alkynes 2. Naming branched alkynes is the same with those of alkenes. The same rules apply.
- 10. Page 9 Examples
- 11. Page 10 Examples
- 12. Page 11
- 13. Page 12 QUIZ – ¼ sheet Name the following: 1.
- 14. Page 13 2.
- 15. Page 14 3.
- 16. Page 15 4.
- 17. Page 16 5.
- 18. Page 17 Assignment Give the importance of alkynes.
- 19. Page 18