The source of nitrogen in Gabriel synthesis of amines is:

1. Sodium amide, NaN3

2. Sodium azide, NaNO2

3. Potassium cyanide, KCN

4. Potassium phthalimide C6H4(CO)2 NK+

Hint: It is a substitution reaction

Source of nitrogen in Gabriel phthalimide synthesis is potassium phthalimide. The reaction is as follows: