Question
Ethylamine $({C}_{2}{H}_{5}N{H}_{2})$ can be obtained from N-ethylphthalimide on treatment with:(A) $NaB{H}_{4}$(B) $Ca{H}_{2}$(C) ${H}_{2}O$(D) $N{H}_{2}N{H}_{2}$
Complete step by step answer: This synthesis is used to get primary amines from primary alkyl halides. The reaction has been generalized for applications in the alkylation of sulfonamides and imides & their deprotection in order to obtain amines. Alkylation of ammonia is quite inefficient, therefore it is substituted with phthalimide anion in the Gabriel synthesis.In this reaction N-ethylphthalimide reacts with $N{H}_{2}N{H}_{2}$ in order to form phthalhydrazide and N-ethylamine.
N-ethylphthalimide is made to react with hydrazine $N{H}_{2}N{H}_{2}$. In this N-ethylphthalimide is heated with hydrazine in order to form phthalhydrazide and n-ethylamine.