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  4. Gabriel’s phthalimide synthesis can be used to prepare

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Q. Gabriel’s phthalimide synthesis can be used to prepare

KEAMKEAM 2014Amines

Solution:

Only aliphatic primary $\left(1^{\circ}\right)$ amines (amines having the formula $R- NH _{2}$ where $R \neq C _{6} H _{5}$ ) are synthesised by Gabriel's phthalimide synthesis.

The structures of the given compounds are as follows.

(a) $C _{2} H _{5} NH _{2}$ ethanamine. $\left(1^{\circ}\right.$ amine)

(b) $CH_3NHCH_3 \,N$ -methylmethanamine ($2^{\circ}$amine)

image

Thus, only ethanamine can be obtained from Gabriel's phthalimide synthesis among the given compounds.