Question

how will you prepare 1 4-dinitrobenzene by starting with benzenamine​

Answer 1

Explanation :

The following steps are involved in this conversion :

Step 1 : Nitration of aniline

When the benzenamine or aniline react with the nitrous acid and sulfuric acid, the result is the formation of para-nitroaniline.

Step 2 : Formation of diazonium salt

When para-nitroaniline react with $NaNO_2$ and HCl to give para-nitrodiazonium salt.

Step 3 : Formation of 1,4-dinitrobenzene

When para-nitrodiazonium salt react with $NaNO_2/Cu^+$ to give 1,4-dinitrobenzene.

The reaction conversion are shown below.