Bromination take place at :

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Bromine Water Test

Bromination t...

Question

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Solution

The correct option is A
a

Both carbons at a and c are allylic. NBS implies Free radical Bromination (substitution) at allytic position (or allylic Hydrogen atom).

Free radical Bromination is very selective $3^{\circ} > 2^{\circ} > 1^{\circ}$

This could also be extended to allylic position as well. So Bromination takes places at 'a'

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