example of reduction of aromatic nitro compounds?

Answer 1

Ph-NO2 + H2 (5% Pt or Pd on activated carbon) -->

(Shake in ether at 40 psi H2 for about 1/2 hr) -->

Filter off the catalyst and evaporate the ether -->

Ph-NH2

Answer 2

reduction of an aromatic nitro compound would yield and aromatic compound with amine substituent, or a simply alkane ring.

This would occur because everything would get reduced down. The ring will lose its aromaticity, and nitro will either take off, or reduce to amine.

Answer 3

C6H5-NO2 + Sn + HCl(aq) ===> C6H5-NH2 + SnCl2(aq)

That is the production of aniline from nitrobenzene. Other reducingagents besides tin give hydrazobenzene, C6H5-NH-NH-C6H5; azobenzene, C6H5-N=N-C6H5; and phenylhydroxylamine, C6H5-NHOH.