1. Timberlake LecturePLUS 19991 Chapter 10 Alkanes and Aromatic Hydrocarbons Cycloalkanes Aromatic Hydrocarbons

2. Timberlake LecturePLUS 19992 Cycloalkanes Cyclopropane CH 2 CH 2 CH 2 Cyclobutane CH 2 CH 2 CH 2

3. Timberlake LecturePLUS 19993 More Cycloalkanes Cyclopentane CH 2 CH 2 CH 2 CH 2 Cyclohexane CH 2

4. Timberlake LecturePLUS 19994 Naming Cycloalkanes with Side Groups Number of Naming side groups OneSide group name goes in front of the cycloalkane name. TwoNumber the ring in the direction that gives the lowest numbers to the side groups.

5. Timberlake LecturePLUS 19995 Cycloalkanes with Side Groups

6. Timberlake LecturePLUS 19996 Learning Check Alk8

7. Timberlake LecturePLUS 19997 Solution Alk8

8. Timberlake LecturePLUS 19998 Aromatic Compounds and Benzene Aromatic compounds contain benzene. Benzene, C 6 H 6, is represented as a six carbon ring with 3 double bonds. Two possible can be drawn to show benzene in this form.

9. Timberlake LecturePLUS 19999 Benzene Structure The structures for benzene can also be written as a single structure where the alternating double bonds are written as a circle within the ring. Benzene structure

10. Timberlake LecturePLUS 199910 Aromatic Compounds in Nature and Health Many aromatic compounds are common in nature and in medicine.

11. Timberlake LecturePLUS 199911 Naming Aromatic Compounds Aromatic compounds are named with benzene as the parent chain. One side group is named in front of the name benzene. methylbenzenechlorobenzene (toluene)

12. Timberlake LecturePLUS 199912 Naming Aromatic Compounds When two groups are attached to benzene, the ring is numbered to give the lower numbers to the side groups. The prefixes ortho (1,2), meta (1,3-) and para (1,4-) are also used.

13. Timberlake LecturePLUS 199913 Some Common Names Some substituted benzene rings also use a common name. Then naming with additional more side groups uses the ortho-, meta-, para- system.

14. Timberlake LecturePLUS 199914 Learning Check Alk9 Select the names for each structure: 1. Chlorocyclohexane 2. Chlorobenzene 3. 1-chlorobenzene 1. Meta-methyltoluene 2. Meta-dimethylbenzene 3. 1,3-dimethylbenzene

15. Timberlake LecturePLUS 199915 Solution Alk9 Select the names for each structure: 2. Chlorobenzene 1. Meta-methyltoluene 2. Meta-dimethylbenzene 3. 1,3-dimethylbenzene

16. Timberlake LecturePLUS 199916 Learning Check Alk10 Write the structural formulas for each of the following: A. 1,3-dichlorobenzene B. Ortho-chlorotoluene

17. Timberlake LecturePLUS 199917 Solution Alk10 Write the structural formulas for each of the following: A. 1,3-dichlorobenzene B. Ortho-chlorotoluene