Question

Conversion of aniline to nitrobenzene

Answer 1

To convert Aniline into nitobenzene following steps are used :—

1)First convert aniline to diazonium chloride salt using NaNO2+HCL

C6H5NH2 + NaNO2 +HCl ----> C6H5N2Cl

2)Use H3PO3 to remove the N2^Cl^- group from diazonium chloride salt & results to a simple benzene.

C6H5N2Cl + H3PO3 ----> C6H6

3)Convert benzene to nitrobenzene by using the nitrating mixture i.e conc.HNO3+H2SO4

C6H6 + conc. HNO3+H2SO4 ----> C6H5NO2

This is the first way and YES we can perepare it also by oxidation of Aniline but it would be Catalytic and electrocatalytic oxidation of aniline to nitrobenzene over vanadium silicate molecular sieves: VS-1 usingt-butyl hydroperoxide (TBHP) as oxidant.

VS-1 catalyzes the oxidation of aniline selectively to nitrobenzene (73%) in the presence of t-butyl hydroperoxide (TBHP).

Hope it answer your question.