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Chapter 10 Alkanes and Aromatic Hydrocarbons

Chapter 10 Alkanes and Aromatic Hydrocarbons. Cycloalkanes Aromatic Hydrocarbons. Cycloalkanes. Cyclopropane CH 2 CH 2 CH 2 Cyclobutane CH 2 CH 2 CH 2 CH 2. More Cycloalkanes. Cyclopentane CH 2 CH 2 CH 2

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Chapter 10 Alkanes and Aromatic Hydrocarbons

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  1. Chapter 10Alkanes and Aromatic Hydrocarbons Cycloalkanes Aromatic Hydrocarbons Timberlake LecturePLUS 1999

  2. Cycloalkanes Cyclopropane CH2 CH2 CH2 Cyclobutane CH2 CH2 CH2 CH2 Timberlake LecturePLUS 1999

  3. More Cycloalkanes Cyclopentane CH2 CH2 CH2 CH2 CH2 Cyclohexane CH2 CH2 CH2 CH2 CH2 CH2 Timberlake LecturePLUS 1999

  4. Naming Cycloalkanes with Side Groups Number of Naming side groups One Side group name goes in front of the cycloalkane name. Two Number the ring in the direction that gives the lowest numbers to the side groups. Timberlake LecturePLUS 1999

  5. Cycloalkanes with Side Groups Timberlake LecturePLUS 1999

  6. Learning Check Alk8 Timberlake LecturePLUS 1999

  7. Solution Alk8 Timberlake LecturePLUS 1999

  8. Aromatic Compounds and Benzene Aromatic compounds contain benzene. Benzene, C6H6 , is represented as a six carbon ring with 3 double bonds. Two possible can be drawn to show benzene in this form. Timberlake LecturePLUS 1999

  9. 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 Timberlake LecturePLUS 1999

  10. Aromatic Compounds in Nature and Health Many aromatic compounds are common in nature and in medicine. Timberlake LecturePLUS 1999

  11. Naming Aromatic Compounds Aromatic compounds are named with benzene as the parent chain. One side group is named in front of the name benzene. methylbenzene chlorobenzene (toluene) Timberlake LecturePLUS 1999

  12. 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-) arealso used. Timberlake LecturePLUS 1999

  13. 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. Timberlake LecturePLUS 1999

  14. 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 Timberlake LecturePLUS 1999

  15. Solution Alk9 Select the names for each structure: 2. Chlorobenzene 1. Meta-methyltoluene 2. Meta-dimethylbenzene 3. 1,3-dimethylbenzene Timberlake LecturePLUS 1999

  16. Learning Check Alk10 Write the structural formulas for each of the following: A. 1,3-dichlorobenzene B. Ortho-chlorotoluene Timberlake LecturePLUS 1999

  17. Solution Alk10 Write the structural formulas for each of the following: A. 1,3-dichlorobenzene B. Ortho-chlorotoluene Timberlake LecturePLUS 1999

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