Question

The major product formed in the above reaction is :

• A.
• B.
• C.
• D.

Answer 1

The correct option is A

For the following reaction:



Halogenation reaction with Bromine is highly selective, it will abstract that hydrogen which forms the most stable free radical.
Order of stability of free radical is :
$1^{\circ }<2^{\circ }<3^{\circ }$
When Hydrogen (a) is abstracted, $3^{\circ }$ free radical is obtained.
When Hydrogen (b) is abstracted, $2^{\circ }$ free radical is obtained.
When Hydrogen (c) is abstracted, $1^{\circ }$ free radical is obtained.
When Hydrogen (d) is abstracted, $2^{\circ }$ free radical is obtained.
So, Hydrogen (a) will be abstracted most readily forming the given major product