The increasing order of nitration of the following compounds is :
(b) < (a) < (c) < (d)
(a) < (b) < (c) < (d)
(b) < (a) < (d) < (c)
(a) < (b) < (d) < (c)
As we learnt in
Gabriel Phthalimide Synthesis -
Further alkylation can be stopped and a pure primary amine can be obtained by alkylation of phthalimide ( Gabriel synthesis ) followed by hydrolysis.
Here the aniline is least reactive due to formation of anilinium ion in acidic medium.
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