Chapter 7: Elimination Reactions

Chapter 7: Elimination Reactions PowerPoint PPT Presentation


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The E1 Pathway Competes with SN1. First Step: Same as SN1. E1 Orbital Picture. . Several Products are Possible. Alkene Nomenclature. SN1 vs. E1 Reaction. E2: Bimolecular Elimination. E2: Deprotonation is First Step. Energy Diagram Similar to SN2. Reaction proceeds by Anti Elimination. SN2. SN1. E1. E2.

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Chapter 7: Elimination Reactions

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1. Chapter 7: Elimination Reactions

2. The E1 Pathway Competes with SN1

3. First Step: Same as SN1

4. E1 Orbital Picture

6. Several Products are Possible

7. Alkene Nomenclature

8. SN1 vs. E1 Reaction

9. E2: Bimolecular Elimination

10. E2: Deprotonation is First Step

11. Energy Diagram Similar to SN2

12. Reaction proceeds by Anti Elimination

14. Start Lecture 8

15. Weakly Basic Nucleophiles Give Substitution

16. Increased Substitution Favors Elimination

18. Bulky Bases Favor Elimination

19. Substitution or Elimination?

20. Summary of Reactivity

21. Important Concepts

22. Important Concepts

23. Start Lecture 9

25. Summary of Reactivity

26. Important Concepts

27. Important Concepts

28. Treating Alcohols with Mineral Acid gives Haloalkanes

29. Tertiary Alcohols follow SN1 Pathway to give Haloalkanes

30. Alcohols also undergo Elimination under Acidic Conditions

31. Summary of Alcohol Reactivity

32. Carbocation Rearrangement leads to Product Mixtures

34. Rearrangement Mechanism

35. Hyperconjugation

36. Rearrangement and Product Mixtures

37. Rearrangement also occurs in E1

38. Alkyl Shifts are also Possible

39. Concerted Rearrangements in Primary Alcohols

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