Question

Given :

The products $P$ and $Q$ are

P		Q
(a)	$p$-bromonitrobenzene	$p$-bromoaniline
(b)	$o$-bromonitrobenzene	$o$-bromoaniline
(c)	$o, p$-dibromonitrobenzene	$o ,p$-dibromoaniline
(d)	$m$-bromonitrobenzene	$m$-bromoaniline

• A. a
• B. b
• C. c
• D. d

Answer 1

Answer: (D)

$- NO _{2}$ group is a deactivating and $m$ -directing group so it directs the incoming $Br^-$ ion to the $m$ -position thereby leading to the formation of $m$ -bromonitrobenzene. Upon reduction with $Sn / HCl$, the $- NO _{2}$ group reduces to $- NH _{2}$ i.e., the final product is $m$ -bromoaniline.