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Nitro compounds are reduced by iron scrap and hydrochloric acid to yield one of the following compounds.
  • a)
    Amines
  • b)
    Esters
  • c)
    Amides
  • d)
    Nitriles
Correct answer is option 'A'. Can you explain this answer?
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Nitro compounds are reduced by iron scrap and hydrochloric acid to yie...
RNO+Fe/HCl ->RNH2
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Nitro compounds are reduced by iron scrap and hydrochloric acid to yie...
Reduction of Nitro Compounds to Amines

Nitro compounds are organic compounds that contain a nitro functional group (-NO2) attached to a carbon atom. These compounds can be reduced to amines by various reducing agents. One such reducing agent is a mixture of iron scrap and hydrochloric acid.

Reduction Process

When a nitro compound is treated with iron scrap and hydrochloric acid, the following steps occur:

1. Formation of Nitroso Compounds:
The iron scrap reacts with the hydrochloric acid to produce nascent hydrogen gas (H2). This nascent hydrogen then reacts with the nitro compound to form nitroso compounds. Nitroso compounds contain a nitroso functional group (-NO) attached to a carbon atom.

2. Formation of Hydroxylamine:
The nitroso compound further reacts with more nascent hydrogen to form hydroxylamine. Hydroxylamine contains a hydroxylamino functional group (-NH2OH) attached to a carbon atom.

3. Formation of Amine:
Finally, the hydroxylamine is dehydrated to yield an amine. Dehydration involves the removal of a water molecule from the hydroxylamine molecule.

Why Amines are formed

The reduction of nitro compounds to amines occurs because the nitro group (-NO2) is a strong electron-withdrawing group. It withdraws electron density from the carbon atom to which it is attached, making it susceptible to reduction. The reducing agent, in this case, the mixture of iron scrap and hydrochloric acid, supplies the necessary electrons to reduce the nitro group.

Other Options

- Esters: Esters are not formed in this reaction because the reduction of nitro compounds does not involve the formation of a carbonyl group, which is a characteristic feature of esters.

- Amides: Amides are not formed in this reaction because the nitro group does not undergo a reaction with amines to form amides.

- Nitriles: Nitriles are not formed in this reaction because the nitro group is reduced to an amine, and there is no involvement of a cyanide group (-CN) which is characteristic of nitriles.

Therefore, the correct answer is option 'A' - Amines.
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Read the passage given below and answer the following questions:Reductive alkylation is the term applied to the process of introducing alkyl groups into ammonia or a primary or secondary amine by means of an aldehyde or ketone in the presence of a reducing agent. The present discussion is limited to those reductive alkylations in which the reducing agent is hydrogen and a catalyst or "nascent" hydrogen, usually from a metalacid combination; most of these reductive alkylations have been carried out with hydrogen and a catalyst. The principal variation excluded is that in which the reducing agent is formic acid or one of its derivatives; this modification is known as the Leuckart reaction. The process of reductive alkylation of ammonia consists in the addition of ammonia to a carbonyl compound and reduction of the addition compound or its dehydration product. The reaction usually is carried out in ethanol solution when the reduction is to be effected catalytically:Since the primary amine is formed in the presence of the aldehyde it may react in the same way as ammonia, yielding an additional compound, a Schiff's base (RCH= NCH2R) and finally, a secondary amine. Similarly, the primary amine may react with the imine, forming an addition product which also is reduced to a secondary amine Finally, the secondary amine may react with either the aldehyde or the imine to give products which are reduced to tertiary amines.Similar reactions may occur when the carbonyl compound employed is a ketone.Q. The reaction of ammonia and its derivatives with aldehydes is called

Nitro compounds are reduced by iron scrap and hydrochloric acid to yield one of the following compounds.a)Aminesb)Estersc)Amidesd)NitrilesCorrect answer is option 'A'. Can you explain this answer?
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