Question

How many structural isomers are obtained by reaction of 2-pentene with nbs?

Answer 1

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Answer 2

Answer: 2 structural isomers are obtained by reaction of 2-pentene with nbs.

Explanation:

When 2-pentene is treated with NBS(N-bromosuccinimide) in tetra chloro methane gives two structural isomers of allylic position substituted with bromine.

$CH_3-CH=CH-CH_2-CH_3+NBS\overset{h\nu}\rightarrow$

$CH_2Br-CH=CH-CH_2-CH_3+CH_3-CH=CH-CHBr-CH_3$