2- methylbutane on reacting with bromine in the presence of sunlight gives mainly
1 - bromo-2- methylbutane
2 - bromo-2- methylbutane
2 - bromo-3- methylbutane
1 - bromo-3- methylbutane
As we learnt
Chemical Reaction Halogenation of alkane -
When alkane react with halogen in presence of UV light it give free radical substitution reaction.
- wherein
Bromine gets substituted to hydrogen where carbon has least number of hydrogen atoms.
Reactivity order of abstraction of H towards bromination of alkane is
Option 1)
1 - bromo-2- methylbutane
This option is incorrect.
Option 2)
2 - bromo-2- methylbutane
This option is correct
Option 3)
2 - bromo-3- methylbutane
This option is incorrect.
Option 4)
1 - bromo-3- methylbutane
This option is incorrect.
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