Addition of X2 to Alkene Page # 6
H H
hbc attack B O
H CH3
C C
Br Br
p Br it
lossof
st
H C H L.a IT H
H
H
Bromonium ion
in mIiiiIYo c
Regioselectivity: NA
Br
main am
Stereoselectivity: antiaddition
Carbocation Rearrangement: NONE
anti addition
043
Br
Reaction Summary:
H
Br H
Product
Br
Br
y
+ Br 2 I I racemic
Br
Br
anti addition
+ Cl2
n c iffif Bsc
racemic
H H
hbc attack B O
H CH3
C C
Br Br
p Br it
lossof
st
H C H L.a IT H
H
H
Bromonium ion
in mIiiiIYo c
Regioselectivity: NA
Br
main am
Stereoselectivity: antiaddition
Carbocation Rearrangement: NONE
anti addition
043
Br
Reaction Summary:
H
Br H
Product
Br
Br
y
+ Br 2 I I racemic
Br
Br
anti addition
+ Cl2
n c iffif Bsc
racemic