Question

(i) Write structures of different isomeric amines corresponding to the molecular formula,
C₄H₁₁N
(ii) Write IUPAC names of all the isomers.
(iii) What type of isomerism is exhibited by different pairs of amines?

Answer 1

(i), (ii) The structures and their IUPAC names of different isomeric amines corresponding
to the molecular formula, C₄H₁₁N are given below:
(a) CH₃-CH₂-CH₂-CH_2-NH₂
Butanamine (10)

N,N-Dimethylethanamine (3°)
(iii) The pairs (a) and (b) and (e) and (g) exhibit position isomerism. The pairs (a) and (c); (a) and (d); (b) and (c); (b) and (d) exhibit chain isomerism.
The pairs (e) and (f) and (f) and (g) exhibit metamerism. All primary amines exhibit functional isomerism with secondary and tertiary amines and
vice-versa.