Question

1,4-pentadiene reacts with 1 mol of NBS to give :

• A. 3-bromo-1,4-pentadiene
• B. 2-bromo-1,4-pentadiene
• C. 5-bromo-1,3-pentadiene
• D. 1-bromo-1,4-pentadiene

Answer 1

Answer: (A), (C)

The correct options are
A 3-bromo-1,4-pentadiene
C 5-bromo-1,3-pentadiene

1,4-pentadiene reacts with 1 mol of NBS to give a mixture of 3-bromo-1,4- pentadiene and 5-Bromo-1,3-pentadiene.

This is allylic bromination reaction in which the allylic hydrogen atom is replaced with Br atom.

Hence the correct options are A and C.