Question

Why is glycerol added to shaving soaps??
Why aromatic primary amines cannot be prepared by Gabriel phthalamide synthesis.???

Answer 1

Gabriel phthalimide synthesis is used for the preparation of aliphatic primary amines. It involves nucleophilic substitution (SN2) of alkyl halides by the anion formed by the phthalimide.But aryl halides do not undergo nucleophilic substitution with the anion formed by the phthalimide.Hence, aromatic primary amines cannot be prepared by this process.