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Org. Proc. Res. Dev., 2001, 5 (5), pp 539–541

Already answered this question. Seems have been banned in my answer.

Check this ref: Org. Proc. Res. Dev., 2001, 5 (5), pp 539–541 (instead of your cellphone)

After succeeding your quest, if you plan to scale-up such reaction, you must be aware that some conditions (catalysts , solvants..) could generate hazardous intermediate (type n-oxyde, diazo..). Some usefull articles can be found in OPRD. Good luck.

You could use iron turnings and sulfuric acid, good luck and I will send some research papers concerning this matter.

Thanks for the answering and it will be interesting to know that finally my reaction is no w completed  (Fe+H2SO4). But I am getting two spots on the TLC and Both are products.

You could have get the aldehyd and some imine formed between two molecule of the aldehyd.

@ Christian, Are sure about that!

According to my experience the best way to reduce nitrobenzene to aniline is reduction by activated zinc dust+acetic acid in DCM.

Activation of Zn dust: 400 g Zn dust is taken in a flask 150 mL of 10% HCl aq. soln. was added stirred for 2 minute, filtered washed with 300 mL water followed by 100 mL acetone, dried in vacuum oven.

Procedure for reduction: To a stirred soln of nitrobenzene derivatives (A) (1 equiv) in DCM 5 mL/mmol of A) activated Zn-dust (50 equiv.) was added, cooled to 0 degree centigrade. AcOH (1.5 mL/ mmol of A) was added dropwise. Stirred for 10 min. (completion of the rxn to be checked by TLC analysis) at 0 degree, filtered through a pad of celite (DCM evaporated) and the celite was washed with EtOAc. The filtrate was neutralized with NaHCO3 soln. dried and purified by column. Try this method I think it will serve your purpose.

It's better to protect the Aldehyde with MeOH or EtOH in a mild acidic media, and then reduce the Nitro groups with Tin and HCL (Conc).

You can use Fe in HCl for reduction of 2,4-dinitrobenzaldehyde chiefly or H2/Pt can be used.

SnCl2/EtOH/heat - simple and efficient. You will need to filter through celite super cell during the extraction stage as emulsions form.

Tet Lett.   1984, Vol. 25., No.8,  pp 839-842

Catalytic reduction of nitro group  to amine by hydrogenation in the presence of Pd or Pt catalyst using EtOH+ small quantitty of AcOH as a solvent. It will be superior over using SnCl2/EtOH in work-up.

you can you use mild reducing agent such as : Zn dust in HCl and reflux. I'm afraid if you used  Pt or Pd you might reduce aldehyde to alcohol.

The best way to do it: Nitro compound in a mixture of EtOH and H2O; iron powder and CaCl2. The resulting suspension was stirred at 60 °C.

please check this paper: Synlett 2010, No. 20, 3019–3022.

Iron & NH4Cl in EtOH. reflux