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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
Write the chemical equation involved in the following reaction:
Hoffmann-bromamide degradation reaction
Give the structures of A, B and C in the following reactions :
Give the structures of A, B and C in the following reactions :
Give the structures of A, B and C in the following reactions :
Answer in one sentence.
Predict the product of the following reaction.
\[\ce{Nitrobenzene ->[Sn/conc.HCl]?}\]
Identify the major product (B).
Identify the product obtained when benzamide is treated with bromine and aqueous sodium hydroxide?
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\[\ce{CH3 - I ->[Alc. KCN][\Delta] A ->[Na/C2H5OH] B}\]
For producing amines, the reaction of nitro compounds with iron scrap is preferred because:
Benzylamine may be alkylated as shown in the following equation:
\[\ce{C6H5CH2NH2 + R - X -> C6H5CH2NHR}\]
Which of the following alkylhalides is best suited for this reaction through SN1 mechanism?
The source of nitrogen in Gabriel synthesis of amines is ______.
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(i) \[\ce{Sn/HCl}\]
(ii) \[\ce{Fe/HCl}\]
(iii) \[\ce{H2 - Pd}\]
(iv) \[\ce{Sn/NH4OH}\]
Which of the following reactions are correct?
(i)
(ii)
(iii)
(iv)
Identify A and B in the following reaction.
Write following conversions:
acetanilide `->` p-nitroaniline
How will you carry out the following conversions?
When primary amines are treated with HCl, the product obtained is which of the following?
The amine 'A' when treated with nitrous acid gives yellow oily substance. The amine A is ______.
Which of the following statement(s) is/are incorrect in case of Hofmann bromamide degradation?
