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Q. 6

Which of the following reagents would not be a good choice for reducing an aryl nitro compound to an amine?
A. H₂ (excess)/Pt

B. LiAlH₄ in ether

C. Fe and HCl

D. Sn and HCl

Class 12th Chemistry - Exemplar 13. Amines

Answer :

• When nitrobenzene reacts with LiAlH₄ in ether medium, it does not transform itself to amine, instead another product is formed which is azobenzene . So this reagent will not be a good choice for converting of nitrobenzene to amine.

Other 3 given reagents (i) H₂ (excess)/Pt (iii) Fe and HCl and (iv) Sn and HCl are actually efficient choice for the conversion.

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PREVIOUSBenzylamine may be alkylated as shown in the following equation :C6H5CH2NH2 + R—X →C6H5CH2NHRWhich of the following alkylhalides is best suited for this reaction through SN1 mechanism?NEXTIn order to prepare a 1° amine from an alkyl halide with simultaneous addition of one CH2 group in the carbon chain, the reagent used as source of nitrogen is ___________.

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