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प्रश्न
In the reaction \[\ce{C6H5NH2 + CHCl3 + 3KOH -> A + 3B + 3C}\] the product A is:
विकल्प
C6H5NC
C6H5CN
C6H5Cl
C6H5NHCH3
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उत्तर
C6H5NC
Explanation:
The reaction \[\ce{C6H5NH2 + CHCl3 + 3KOH ->[Alcoholic][Solution] C6H5NC + 3KCl + 3H2O}\]
Hoffmann's carbylamine test/isocyanide test. Secondary and tertiary amines do not provide it. Aliphatic/aromatic primary amines provide it. Isocyanide is a foul-smelling substance.
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संबंधित प्रश्न
What is the action of nitrous acid on primary nitroalkane?
Distinguish between the following pairs of compounds: Aniline and N-methylaniline
Describe a method for the identification of primary, secondary and tertiary amines. Also write chemical equations of the reactions involved.
When primary amine reacts with CHCl3 in alcoholic KOH, the product is _______.
(A) aldehyde
(B) alcohol
(C) cyanide
(D) an isocyanide
Which of the following reactions will not give a primary amine?
Identify the compound that will react with Hinsberg’s reagent to give a solid which dissolves in alkali.
Identify the compound that will react with Hinsberg’s reagent to give a solid which dissolves in alkali.
Arrange the following in the increasing order of their boiling points:
A: Butanamine
B: N, N-Dimethylethanamine
C: N- Etthylethanaminamine
Match List I with List II.
| List I | List II | ||
| (A) | Benzenesulphonyl chloride | (I) | Test for primary amines |
| (B) | Hoffmann bromamide reaction | (II) | Anti Saytzeff |
| (C) | Carbylamine reaction | (III) | Hinsberg reagent |
| (D) | Hoffmann orientation | (IV) | Known reaction of Isocyanates |
Choose the correct answer from the options given below:
Give reasons:
(CH3)2NH is more basic than (CH3)3N in an aqueous solution.
