QJEEM21Ch20ea: JEE Main 2021 Chemistry - Class 12 JEEM21Ch20ea Solution: The total number of amines among the following which can be…

Gabriel phthalimide synthesis is used to prepare 1^o aliphatic or alicyclic amine. Hence, amine which can be synthesised by Gabriel phthalimide synthesis method contains $\alpha$ -carbon.

Aniline (C₆H₅NH₂) does not contain $\alpha$ -C cannot be prepared by Gabriel reaction.

Remaining amines all contain $\alpha$ -C in its respective position, hence they can easily give Gabriel phthalimide reaction.