CH1012
L1 /
‹#›
L1 /
4
AROMATIC BROMINATION I
In contrast to the bromination of alkenes a Lewis acid catalyst must be used for the reaction to occur at all.
• The energy of reaction for the formation of bromobenzene is exothermic.
• The formation of
the addition
product (substituted hexadiene)
is highly endothermic and so
this reaction does not occur.
product (substituted hexadiene)
is highly endothermic and so
this reaction does not occur.
