A) Butylamine
B) Isobutylamine
C) 2-phenylethylamine
D) N-methylbenzylamine
Correct Answer: D
Solution :
Gabriel synthesis is used for the preparation of primary amines. Butylamine, isobutylamine and 2-phenyl ethylamine are primary amine hence these can be prepared by Gabriel's synthesis but N-methyl benzylamine is a secondary amine and therefore, it cannot be prepared by Gabriel's synthesis. \[\underset{\text{butyl}\,\text{amine(}{{\text{1}}^{\text{o}}}\,\text{amine)}}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}N{{H}_{2}},}}\,\] \[\underset{\begin{smallmatrix} 2-\text{phenyl}\,\text{ethyl}\,\text{amine} \\ ({{1}^{o}}\,amine) \end{smallmatrix}}{\mathop{\underset{{{C}_{6}}{{H}_{5}}}{\mathop{\underset{|}{\mathop{C{{H}_{2}}}}\,}}\,-C{{H}_{2}}-N{{H}_{2}},}}\,\]You need to login to perform this action.
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