A primary amine ' A ' {C}₂{H}₇{N} reacts ...

CBSE Class 12 Chemistry 2022 Term 2 Delhi Set 2

Question : 4 of 4

Marks: +1, -0

A primary amine '

A

\mathrm{C}_2\mathrm{H}_7\mathrm{N}

reacts with alkyl halide

\left( \mathrm{C}_2\mathrm{H}_5 1 \right)

to give secondary amine '

B

'. '

B

' reacts with

\mathrm{C}_6\mathrm{H}_5\mathrm{SO}_2\mathrm{Cl}

to give a solid '

\mathrm{C}

' which is insoluble in alkali. Identify 'A', 'B', 'C' and write all the chemical reactions involved.

Solution:

\; \underset{1^{\circ}\text{ Amine (A)}}{\mathrm{CH}_3\mathrm{CH}_2\mathrm{NH}_2} + \underset{\text{Ethyl iodide}}{\mathrm{CH}_3\mathrm{CH}_2\mathrm{I}} \rightarrow \underset{2^{\circ}\text{ Amine(B)}}{\mathrm{CH}_3\mathrm{CH}_2\mathrm{NHCH}_3\mathrm{CH}_2}

\; + \underset{\text{N, N-diethyl benzene}}{\mathrm{C}_6\mathrm{H}_5\mathrm{SO}_2\mathrm{Cl}} \rightarrow \underset{\text{sulphonamide (C)}}{\mathrm{C}_6\mathrm{H}_5\mathrm{SO}_2\mathrm{N}_2(\mathrm{C}_2\mathrm{H}_5)}

\;A=\;\text{Ethyl amine}\;

\;B=\;\text{Diethyl amine}\;

\;C=N, N\;\text{-diethyl benzene sulphonamide.}\;

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