What happens when nitrobenzene is reduced with Fe and HCl?
Answer: When nitrobenzene is reduced with a metal and acid (Sn/HCl, Zn/HCl etc.), aniline is obtained. The intermediate products nitrosobenzene and phenylhydroxylamine can’t be separated because these are reduced more rapidly than nitrobenzene.
Why are Fe and HCl best for reduction of nitro compounds into amine?
The nitro group is also strongly electron-withdrawing group thus the Reduction of nitro aromatic compounds in presence of iron and hydrochloric acid gives aromatic primary amines. Thus, option \[C\] is correct.
Which reagent will you prefer out of the two for reduction of nitrobenzene and why iron scrap HCl or Sn HCl *?
Nitro compounds can be reduced with active metals such as Fe, Sn, Zn etc. Which of the following is true statement?
How does nitrobenzene react with Sn HCl?
Nitrobenzene is reduced to phenylammonium ions using a mixture of tin and concentrated hydrochloric acid. The nitrobenzene has been reduced by gaining electrons in the presence of the acid. The electrons come from the tin, which forms both tin(II) and tin(IV) ions.
When nitrobenzene is treated with Fe and HCl?
In the presence of Fe/HCl nitrobenzene i.e C6H5NO2 changes into Aniline i.e C6H5NH2.
Can Clemmensen reduction reduce nitro group?
The methods most commonly used for deoxygenation of carbonyl groups to alkanes are the Clemmensen reduction,1 the Wolff-Kishner reaction,2,3 and the Mozingo reduction. Similarly, Zn can be used for the reduction of aromatic nitro compounds to anilines, but still requires the use of a heavy metal.
How do you get rid of a nitro group?
Aniline reacts with sodium nitrite and hydrochloric acid at -5 °C to form benzenediazonium chloride. The diazonium salt reacts with cold aqueous hypophosphorous acid to evolve nitrogen and form benzene. The reduction-diazotization-deamination sequence is a standard method for removing aromatic nitro groups.
Why is Fe and HCl preferred?
Reduction with Fe + HCl is preferred because FeCl2, formed in the reaction, gets hydrolysed to release HCl. Hence, small amount of HCl would be required in the reaction.
Why is Fe HCl used?
Fe‐HCl: An Efficient Reagent for Deprotection of Oximes as well as Selective Oxidative Hydrolysis of Nitroalkenes and Nitroalkanes to Ketones. Fe‐HCl mixture was found to selectively perform oxidative hydrolysis of the nitroalkenes 1a–j and nitroalkanes 2a–j to the ketones 3a–j.
Why is Fe HCl preferred?
What happens when Sn reacts with HCl?
Tin reacts with hydrochloric acid to form Tin(IV) chloride. The H+ ions present react with the nitro group of the aromatic compound.
How is the reduction of nitro compounds affected?
The chemical reactions described as reduction of nitro compounds can be affected by many reagents and reaction conditions. Historically, the nitro group was one of the first functional groups to be reduced.
What does Fe / HCl do to the reaction?
Fe/HCl gives F e C l X 2 on reaction and it gets hydrolyzed by steam vapors to produces more hydrochloric acid and hydrogen to push the reaction forward thus making the reaction self-sustaining to produce more aniline from nitrobenzene.
How does Bechamp process reduce nitro to aniline?
Bechamp process involves iron and hydrochloric acid for reducing nitro containing aromatic rings to aniline. In Bechamp process reduction, aromatic nitro compound is adsorbed on Fe 0 surface. Here, it reacts with hydrogen ion H + produced from water and acid reaction, which results into production of amine counterpart of aromatic nitro compound.
Which is more efficient Bechamp reduction or Fe / HCl reduction?
Both Sn/HCl and Fe/HCl reduction ( Bechamp reduction) is replaced by catalytic hydrogenation due to the latter being more efficient and more productive in industial production. Fe/HCl reduction is now an academic interest and is studied as a route to produce iron oxide based pigments. Thanks for contributing an answer to Chemistry Stack Exchange!
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