Which of the following amines can be prepared by Gabriel synthesis?

a.  Isobutyl amine

b.  2-Phenylethylamine

c.  N-Methylbenzylamine

d.  Aniline

Choose the correct option:
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)

Isobutyl amine and 2-phenylethylamine are primary amines that can be prepared easily by Gabriel phthalimide reaction.
Refer to the answer to question 8.