1.

(a) Explain carbyl amine reaction with equation. (b) How does nitrobenzene is reduced to aniline? Give equation. (c) Write the IUPAC name of underset(CH_3)underset(|)(C_6H_6-N-CH_3)

Answer»

Solution :(a) Aliphatic and aromatic primary amines on HEATING with chloroform and ethanolic potassium hydroxide form isocyanides or carbylamines. This REACTION is known as carbylamines reaction.
`UNDERSET(1^(st)"amine")(R-NH_2) + underset("Chloroform")(CHCl_3) + 3KOH_((alc)) underset(Delta)(rarr) underset("Carbylamine")(R-NC) + 3KCl + 3H_2O`
(b)NItrobenzene is reduced to aniline by passing hydrogen GAS in the presence of finely divided nickel, palladium or platinum.

OR
Nitrobenzene is reduced to anline with metals in acidic MEDIUM.

(c) N, N - dimethylaniline.


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