1. Organic Chemistry
Lesson4 (Day 2)

2. Unsaturated Hydrocarbons
A saturated hydrocarbon is one in which the maximum number of hydrogen atoms per carbon atom.
An unsaturated compound is one in which contains a double or triple carbon-carbon bond. The ratio of carbon to hydrogen atoms is lower than that of a saturated hydrocarbon

3. 2. Alkenes:
An alkene is a hydrocarbon that contains one or more carbon-carbon double bonds.
An alkene can have only one carbon-carbon double bond. It is still considered an alkene.

4. Naming Alkenes:
Ex. Name the following alkenes:

5. Naming Alkenes:
Identify the longest carbon chain containing the double bond. This is the parent chain and will be named with the suffix “ene”.

6. Naming Alkenes:
Number the carbons so that the carbons containing the double bond has the lowest possible number.

7. Naming Alkenes:
Substituents of the chain are named and numbered.

8. Naming Alkenes:
Put it all together with proper punctuation.

9. 3. Alkynes:
An alkyne is a hydrocarbon that contains one or more carbon-carbon triple bond.
An alkyne can have only one carbon-carbon triple bond. It is still considered an alkyne.

10. Naming Alkynes:
Ex. Name the following alkynes:

11. Naming Alkynes:
Identify the longest carbon chain containing the triple bond. This is the parent chain and will be named with the suffix “ene”.

12. Naming Alkynes:
Number the carbons so that the carbons containing the triple bond et the lowest possible number.

13. Naming Alkynes:
Substituents of the chain are named and numbered.

14. Naming Alkynes:
Put it all together with proper punctuation.

15. Alkenes & Alkynes Assignment
For #9 give proper name on any that are incorrectly names
Change 9h to 1-ethyl-3,4-dimethyl-5- hexyne