(i) Methylamine and dimethylamine (ii) Secondary and tertiary amines\
(i) dimethylamine & Methylaminecan be made notable by the carbylamine test.
When aliphatic and aromatic primary amines are heated with chloroform and ethanol potassium hydroxide, foul-smelling isocyanides or carbylamines develop.
Dimethylamine, on the other hand, does not yield a positive carbylamine test since it is an aliphatic primary amine.
(ii) Tertiary amines & Secondary can be made notable by allowing them to react with Hinsberg’s reagent ( benzene sulphonyl chloride, C6 H5 SO2 Cl ).
When secondary amines react with Hinsberg’s reagent, an insoluble in alkali result is generated. N, N – diethyl amine, for example, interacts with Hinsberg’s reagent to produce N, N – diethyl benzene sulphonamide, which is insoluble in alkali. Hinsberg’s reagent, on the other hand, does not react with tertiary amines.
