Discussion
Which of the following amines does not form carbylamine?
Answer: E
The amine that does not form a carbylamine is N-Methylethanamine.
The carbylamine (isocyanide) test, heating with chloroform and alcoholic KOH, works only for primary amines, aliphatic or aromatic, giving a foul-smelling isocyanide.
N-methylethanamine, CH3CH2NHCH3, is a secondary amine and does not respond. Ethanamine, propan-1-amine, propan-2-amine and benzenamine (aniline) are all primary amines and give the test.
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