JEE · NEET Previous Year Question
Which of the following reactions are used in the preparation of aliphatic primary amines?
I. Gabriel-phthalimide reaction
II. Hoffmann Bromamide reaction
III. Carbylamine reaction
IV. Sandmayer reaction
Topic: JEE PYQ
Answer: B. Full step-by-step solution below.
- AII & III only
- BI & II only
- CIII & IV only
- DI & IV only
Correct answer: B
Solution
(b) Gabriel-phthalimide and Hoffmann- bromamide reactions are used for the preparation of primary aliphatic amines.Carbylamine reaction or isocyanide test is used to check the presence of a primary amine that gives a bad-smelling isocyanide.
Sandmeyer reaction is also a reaction of amines that converts an amine to halobenzene.
Thus, only I and II give a primary aliphatic amine.
More Amines PYQs
- Which of the following reactions does not yield an amine?
- The mass of benzanilide obtained from the benzoylation reaction of 5.8 g of aniline, if yield of product is , is…
- Which one among the following statements is true?
- Which of the following will be the most stable diazonium salt ?
- Which of the following amine cannot be prepared by the Gabriel phthalimide synthesis method?