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प्रश्न
Which of the following reagents would not be a good choice for reducing an aryl nitro compound to an amine?
विकल्प
\[\ce{H2 (excess)/Pt}\]
\[\ce{LiAlH4}\] in ether
\[\ce{Fe}\] and \[\ce{HCl}\]
\[\ce{Sn}\] and \[\ce{HCl}\]
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उत्तर
\[\ce{LiAlH4}\] in ether
Explanation:
Lithium aluminium hydride in either is a strong reducing agent that donated its \[\ce{H-}\] hydride ion to any \[\ce{C = O}\] containing a functional group. In addition to \[\ce{LiAlH}\], to aryl nitro compounds, no reaction will be observed, the desired products of amines will not be produced, rather it will form diazobenzene products.
\[\ce{2C4H5NO ->[LiAlH4/ether] C6H5N = N - C6H5}\]
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संबंधित प्रश्न
Give the structures of A, B and C in the following reactions :
Write structures of compounds A and B in each of the following reactions:
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Identify the product obtained when benzamide is treated with bromine and aqueous sodium hydroxide?
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(i) Isobutyl amine
(ii) 2-Phenylethylamine
(iii) N-methylbenzylamine
(iv) Aniline
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(i)
(ii)
(iii)
(iv)
How will you carry out the following conversions?
Match the reactions given in Column I with the statements given in Column II.
| Column I | Column II | ||
| (i) | Ammonolysis | (a) | Amine with lesser number of carbon atoms |
| (ii) | Gabriel phthalimide synthesis | (b) | Detection test for primary amines. |
| (iii) | Hoffmann Bromamide reaction | (c) | Reaction of phthalimide with \[\ce{KOH}\] and \[\ce{R-X}\] |
| (iv) | Carbylamine reaction | (d) | Reaction of alkylhalides with \[\ce{NH3}\] |
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Which of the following reactions will not give a primary amine?
Which of the following CANNOT be prepared by ammonolysis of alkyl halide?
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\[\ce{A ->[Nitrating mixture] B ->[(i) Sn/cone. HCI][(ii) NaOH] Aniline}\]
Write short note on the following:
Ammonolysis
Write a short note on the following:
Ammonolysis
