Aliphatic Compounds Containing Nitrogen - Result Question 2

2. Ethylamine $\left(C _2 H _5 NH _2\right)$ can be obtained from $N$-ethylphthalimide on treatment with

(2019 Main, 10 April I)

(a) $NaBH _4$

(b) $NH _2 NH _2$

(c) $H _2 O$

(d) $CaH _2$

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Answer:

Correct Answer: 2. (b)

Solution:

The reaction for the production of ethylamine from $N$-ethylphthalimide can be takes place as follows:

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This reaction is the second step of Gabriel phthalimide synthesis for the preparation of aliphatic $1^{\circ}$-amines and amino acid. In this step concentrated alkali can also be used in place of hydrazine.