Mechanism for preparation of m-nitro aniline from m-dinitrobenzene?

Answer 1

dintro benzene is reduced in presence of Na2S2

Answer 2

M-nitroaniline can be prepared from m-dinitrobenzene by reducing one of the nitro groups to an amino group. One common method is to use a reducing agent like tin and hydrochloric acid in a strongly acidic medium, which leads to the conversion of one nitro group to an amino group to yield m-nitroaniline.

Answer 3

Nitro benzene can be prepared by heating benzene with a 1:1 mixture of concentrated nitric acid and concentrated sulphuric acid at 50-55 degree Celsius.

Answer 4

From benzene? [Nitration (HNO3+H2SO4(cat.)) twice @ 0~4 degrees C] + [1 eq. H2 in Pd over C].