Question

Write the structures of different isomers corresponding to the molecular formula `C_(3)H_(9)N`. Write IUPAC names of the isomers which will liberate nitrogen gas on treatment with nitrous acid.

Answer 1

`C_(3)H_(9)N` has four isomers :

Primary amines react with `HNO_(2)` to produce `N_(2)` gas.
a) `underset("Propan-1-amine")(CH_(3)CH_(2)CH_(2)NH_(2))+HONO to underset("Propan-1-ol")(CH_(3)CH_(2)CH_(2)OH)+N_(2)+H_(2)O`
b) `underset("Propan-2-amine") underset(NH_(2)) underset(|)(CH_(3)-CHCH_(3))+HONO to underset("Propan-2-ol") underset(NH_(2))underset(|)(CH_(3)CHCH_(3))+N_(2)+H_(2)O`