1. Properties Nomenclature Stability Addition Reactions
Alkenes
Properties
Nomenclature
Stability
Addition Reactions

2. Ethylene

3. Electron Rich p-Bond

4. Elements or Degrees of Unsaturation: p-Bond or Ring

5. Determine the # elements of Unsaturation

6. Alkene Nomenclature

8. Cyclic alkenes

9. Alkyl Groups with p-Bonds

10. Alkylidene Groups Double Bonds Fused to Rings

11. Polyenes

12. Name these Alkenes

13. Cis and Trans no rotation about p-bond

14. cis-trans Isomers

15. E/Z System

17. Establish Priority of Substituents on Each sp2 Carbon

19. What’s My Name?

20. (Z)-4-ethyl-5-isopropyl-4-nonene

21. Priorities with Multiple Bonds

22. E or Z?

23. E or Z?

24. Name These

26. Hydrogenation Data Helps to Determine Stability DHhydrogenation of Alkenes

27. Enthalpy Change Shows Relative Energy of Alkene

28. Both cis and trans 2-Butene are Hydrogenated to Butane

29. “E” is More Stable than “Z” by 2.3 KJ/mol

30. Relative Stabilities of Alkenes

32. The Addition Reaction

33. HBr Addition

36. Markovnikov’s Rule The addition of H-X across a double bond results in the more highly substituted alkyl halide as the major product.

37. Depicting a Reaction

38. Addition of HBr or HCl Markovnikov Addition

39. Regiochemistry Determined by Stability of Intermediate

41. Hyperconjugation

42. Carbocation Stability more highly substituted, lower energy

44. 3o Carbocation forms Preferentially

48. What Alkenes are Needed to form Theses Alkyl Halides?

49. Definitions
Regioisomers – two constitutional isomers that could result from an addition reaction.
Regiospecific – only one regiosisomer forms at the expense of the other.
Regioselective – both regioisomers are formed, but one is formed in preference.

50. Determine the major product:

52. Rearrangements

54. Propose a Mechanism