Addition to

1
Chapter 9
Addition to Alkenes 1
2
Recall from Chapter 3
Section 9.2
3
Reaction Coordinate Diagram
4
Regiochemistry
Section 9.6
Markovnikovs Rule In an addition reaction the
more substituted carbon (stable carbocation) of
the alkene will bond to the halogen
5
Regiochemistry
Racemic
6
Regiochemistry
7
Resonance Effects
Section 9.4
8
Resonance Effects
75
25
9
Summary of H-X Addtion Reactions
more stable carbocation
nucleophile
electrophile
or
3 gt 2 gt 1
resonance stabilized gt not resonance stabilized
10
Stability of Carbocations
11
Stability of Carbocations
12
Stability of Carbocations