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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
An aromatic compound 'A' of molecular formula C7H7ON undergoes a series of reactions as shown below. Write the structures of A, B, C, D and E in the following reactions :
How do you convert the following: C6H5CONH2 to C6H5NH2
How do you convert the following: Ethanenitrile to ethanamine
Accomplish the following conversion:
Benzyl chloride to 2-phenylethanamine
Give the structure of A, B and C in the following reaction:
\[\ce{C6H5NO2 ->[Fe/HCl] A ->[NaNO2 + HCl][273 K] B ->[H2O/H+][\Delta] C}\]
Write the reaction of aliphatic primary amine with nitrous acid.
Write reactions to bring about the following conversions.
Acetamide to methylamine
Why cannot aniline be prepared by Gabriel phthalimide synthesis?
Identify the major product (B).
Identify 'A' and 'B' in the following conversions.
\[\ce{CH3 - I ->[Alc. KCN][\Delta] A ->[Na/C2H5OH] B}\]
Which of the following compounds is obtained when quaternary ammonium hydroxide is strongly heated?
Amongst the following, the strongest base in aqueous medium is ______.
Which of the following amines can be prepared by Gabriel synthesis.
(i) Isobutyl amine
(ii) 2-Phenylethylamine
(iii) N-methylbenzylamine
(iv) Aniline
Which of the following reactions are correct?
(i)
(ii)
(iii)
(iv)
Assertion: Aromatic 1° amines can be prepared by Gabriel Phthalimide Synthesis.
Reason: Aryl halides undergo nucleophilic substitution with anion formed by phthalimide.
Which of the following reactions will not give a primary amine?
Give reasons for the following:
Ammonolysis of alkyl halides is not a good method to prepare pure primary amines.
Which of the following would not be a good choice for reducing nitrobenzene to aniline?
Write a short note on Ammonolysis.
Write a short note on the following:
Ammonolysis
