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प्रश्न
Give one chemical test to distinguish between the following pair of compounds.
Aniline and N-methylaniline
उत्तर
Aniline and N-methylaniline can be distinguished using the Carbylamine test. Primary amines, on heating with chloroform and ethanolic potassium hydroxide, form foul-smelling isocyanides or carbylamines. Aniline, being an aromatic primary amine, gives a positive carbylamine test. However, N-methylaniline, being a secondary amine, does not.
\[\ce{\underset{(Primary amine)}{\underset{Aniline}{C6H5NH2}} + CHCl3 + 3KOH ->[\Delta] \underset{(foul smell)}{\underset{Benzyl isocyanide}{C6H5NC}} + 3KCl + 3H2O}\]
\[\ce{\underset{(Secondary amine)}{\underset{N-methylaniline}{C6H5NHCH3}} + CHCl3 + 3KOH ->[\Delta] No reaction}\]
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संबंधित प्रश्न
Which among the following molecular formulae represents urotropine?
(a) C6H12N4
(b) C6H24H4
(c) C6H12N4O2
(d) C6H24N4O2
Write the IUPAC name of the following compound and classify it as primary, secondary and tertiary amine.
CH3(CH2)2NH2
Write the IUPAC name of the following compound and classify it as primary, secondary and tertiary amine.
CH3NHCH(CH3)2
Write the IUPAC name of the following compound and classify it as primary, secondary and tertiary amine.
(CH3CH2)2NCH3
Account for the following:
pKb of aniline is more than that of methylamine.
Account for the following:
Ethylamine is soluble in water whereas aniline is not.
How will you convert ethanoic acid into methanamine?
How will you convert hexanenitrile into 1-aminopentane?
Accomplish the following conversions - Benzoic acid to aniline
Accomplish the following conversions - Aniline to 2,4,6-tribromofluorobenzene
Accomplish the following conversions - Chlorobenzene to p-chloroaniline
Accomplish the following conversions - Aniline to benzyl alcohol.
An aromatic compound ‘A’ on treatment with aqueous ammonia and heating forms compound ‘B’ which on heating with Br2 and KOH forms a compound ‘C’ of molecular formula C6H7N. Write the structures and IUPAC names of compounds A, B and C.
Complete the following reactions:
`C_6H_5N_2Cl +C_2H_5OH->`
Complete the following reactions:
Do the following conversions in not more than two steps :
Ethyl benzene to Benzoic acid
What is the action of p-toluenesulphonychloride on ethylamine and diethylamine?
Do the following conversions in not more than two steps:
