Chemical Reactions of Amines

Identify A, B, C and D in the following process :

(i)  $C{H}_{3}C{H}_{2}Cl\underset{}{\overset{NaCN}{\to }}A\underset{Ni/H_2}{\overset{reduction}{\to }}B$

(ii)  $C_6{H}_{5}N{H}_2$  $\underset{}{\overset{NaN{O}_2/HCl}{\to }}C\underset{}{\overset{C_6{H}_{5}N{H}_2/O{H}^{-}}{\to }}D$

The products of the following chemical reactions are,

    $\left(\mathrm{i}\right)$ ${\mathrm{C}}_2{\mathrm{H}}_5{\mathrm{NH}}_2+{\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{SO}}_2\mathrm{Cl}\underset{}{\overset{}{\to }}$

 $\left(\mathrm{ii}\right) {\mathrm{C}}_2{\mathrm{H}}_5{\mathrm{NH}}_2+{\mathrm{HNO}}_2\underset{}{\overset{}{\to }}$

The products of the following chemical reactions are

(i)  ${\mathrm{C}}_2{\mathrm{H}}_5{\mathrm{NH}}_2\mathrm{\hspace{0.17em}}+{\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{SO}}_2\mathrm{Cl}\underset{}{\overset{}{\to }}$

(ii)  ${\mathrm{C}}_2{\mathrm{H}}_5{\mathrm{NH}}_2\mathrm{\hspace{0.17em}}+{\mathrm{HNO}}_2\stackrel{{\mathrm{H}}_{\mathrm{2}}\mathrm{O}}{\to }$

The increasing order of basic strengths in their aqueous solutions is

 ${\mathrm{NH}}_3,{\mathrm{CH}}_3{\mathrm{NH}}_2,{\left({\mathrm{CH}}_3\right)}_2\mathrm{NH},{\left({\mathrm{CH}}_3\right)}_3\mathrm{N}$

State which of the following statements are true:

(i)  $p{K}_b$  value for aniline is less than that for methylamine.

(ii) Methylamine in water reacts with ferric chloride to give a precipitate of ferric hydroxide.

(iii) Aniline does not undergo Friedel-Crafts reaction.

State which of the following statements are true:

(i)  $\text{p}{\text{K}}_{\text{b}}$ value for aniline is less than that for methylamine.

(ii) Methylamine in water reacts with ferric chloride to give a precipitate of ferric hydroxide.

(iii) Aniline does not undergo Friedel-Crafts reaction.

 The order of basic strength in gas phase of the following compound would be:

 $\begin{array}{l}{\text{i) C}}_{\text{2}}{\text{H}}_{\text{5}}{\text{NH}}_{\text{2}}\text{,}\\ {\text{ii) (C}}_{\text{2}}{\text{H}}_{\text{5}}{\text{)}}_{\text{2}}\text{NH,}\\ {\text{iii) (C}}_{\text{2}}{\text{H}}_{\text{5}}{\text{)}}_{\text{3}}\text{N}\mathrm{and}\\ {\text{iv) CH}}_{\text{3}}{\text{NH}}_2.\end{array}$

 The order of basic strength in gas phase of the following compound would be:

 $\begin{array}{l}{\text{i) C}}_{\text{2}}{\text{H}}_{\text{5}}{\text{NH}}_{\text{2}}\text{,}\\ {\text{ii) (C}}_{\text{2}}{\text{H}}_{\text{5}}{\text{)}}_{\text{2}}\text{NH,}\\ {\text{iii) (C}}_{\text{2}}{\text{H}}_{\text{5}}{\text{)}}_{\text{3}}\text{N}\mathrm{and}\\ {\text{iv) CH}}_{\text{3}}{\text{NH}}_2.\end{array}$

The following pairs of computes can be distinguished by which of the following tests:

 (i) Ethylamine and aniline

(ii) Aniline and N-methylaniline

The following pairs of compounds can be distinguished by which of the following tests:

(i) Ethyl amine and aniline

(ii) Aniline and N-methyl aniline

The test that is done for the differentiation of primary amines from secondary and tertiary amine is:

 (i) Aniline does not undergo Friedel-Crafts Reaction.

(ii) Aliphatic amines are stronger bases than aromatic amines.

State if the above two statements are true or false:

Amongst the following the most basic compound is –

Amongst the following the most basic compound is: