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प्रश्न
Write a short note on the following:
Carbylamine reaction
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उत्तर
Aliphatic and aromatic primary amines on heating with chloroform and ethanolic potassium hydroxide form isocyanides or carbylamines which are foul smelling substances. Secondary and tertiary amines do not show this reaction. This reaction is known as carbylamine reaction or isocyanide test and is used as a test for primary amines.
\[\ce{R-NH2 + CHCl3 + 3KOH ->[Heat] R-NC + 3KCl + 3H2O}\]
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संबंधित प्रश्न
Arrange the following:
Aniline, p-nitroaniline, p-methylaniline - in the increasing order of their basic strength
Write the structures of main products when aniline reacts with the following reagents : HCl
Write the chemical equations involved when aniline is treated with the following reagents: HCI
Why does NH3 act as a Lewis base?
Arrange the following:
In decreasing order of the pKb values:
C2H5NH2, C6H5NHCH3, (C2H5)2NH and C6H5NH2
Arrange the following:
In increasing order of basic strength:
C6H5NH2, C6H5N(CH3)2, (C2H5)2NH and CH3NH2
Write the structures of the main products of the following reactions:
Write the structures of the main products of the following reactions:
The following reaction takes place in the presence of:
The most reactive amine towards dilute hydrochloric acid is:
Explain why \[\ce{MeNH2}\] is stronger base than \[\ce{MeOH}\]?
When methyl iodide is heated with ammonia, what is the product obtained?
When ethanol is mixed with ammonia and passed over alumina the compound formed is which compound?
Which of the following statement is true about methyl amine?
Which of the following is most basic?
What is the characteristic smell of liquid amines?
Which of the following compound cannot be produced if 1-propane amine is treated with NaNO2 and HCl?
State one reason for the following:
Alkylamine is soluble in water, whereas arylamine is insoluble in water.
