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Question

How will you convert

1) Benzene into aniline

2) Benzene into N,N-dimethylaniline

3) Cl-( CH2)4-Cl into hexan-1,6-diamine

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Solution

A) Conversion of benzene into aniline
For the conversion of benzene into aniline, first we are doing the nitration of benzene which gives nitrobenzene via electrophilic substitution reaction then reduce the nitro group into amine by catalytic hydrogenation using H2/Pd in ethanol, as a result we get aniline as a product.

Involved reactions shown below-


B) Conversion of benzene into N, N−dimethylaniline
For the conversion of benzene into N, N− dimethylaniline,
first we are doing the nitration of benzene which gives nitrobenzene via electrophilic substitution reaction then reduce the nitro group by catalytic hydrogenation, as a result we get aniline as a product. Aniline on reacting with two equivalents of iodomethane forms N, N−dimethylaniline.

Involved reactions are shown below-


C)Conversation of Cl(CH2)4Cl into hexan-1,6-diamine

For the conversion of Cl(CH2)4Cl into hexan1,6diamine, first of all we are doing the reaction of given reactant with ethanolic sodium cyanide, the CN molecules replace both chlorine atoms via nucleophilic substitution reaction.

After that catalytic hydrogenation is done in presence of H2/Ni, in which both CN groups gets converted into CH2NH2 and we get our desired product.

Involved reactions are shown below-




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