Question

Which of the following is \[{\mathbf{3}}^\circ \] amine
A. \[{\left( {{\mathbf{C}}{{\mathbf{H}}_{\mathbf{3}}}}
\right)_{\mathbf{3}}}{\mathbf{N}}\]
B. \[{\left( {{\mathbf{C}}{{\mathbf{H}}_{\mathbf{3}}}}
\right)_{\mathbf{2}}}{\mathbf{N}}{\text{ }}{\mathbf{H}}\]
C. \[\;\left( {{\mathbf{C}}{{\mathbf{H}}_{\mathbf{3}}}} \right){\text{
}}{\mathbf{N}}{\text{ }}{{\mathbf{H}}_{\mathbf{2}}}\]
D. \[{\mathbf{N}}{{\mathbf{H}}_{\mathbf{3}}}\]

Answer 1

Hint: In the given question we will mainly understand what is tertiary amine or three-degree amine is. We already know that amines are biological derivatives of ammonia\[\left( {N{H_3}} \right)\], in which one or more of the three are replaced with a carbon group.

Complete Step by step answer: We distinguish that amines are Nitrogen-Containing Functional Groups and Amines are plentiful in nature. Amines can be classified into three types that are primary amine or we can say one degree amine (\[1^\circ \]), secondary amine or two degree amine (\[2^\circ \]), and lastly tertiary amine or three degree amine (\[3^\circ \]), all this depends upon how many number of carbon groups are linked to the nitrogen atom.
\[N{H_3}\]-Ammonia
\[R - N{H_2}\]- \[1^\circ \]Amine
\[R - HN - R'\]- \[2^\circ \]Amine
\[R - R'' - N - R'\]- \[3^\circ \] Amine
Therefore, Trimethylamine is a tertiary amine that is ammonia in which each hydrogen atom is replaced by a methyl group. It plays a role as a human xenobiotic metabolite. So, it is a tertiary amine and is a member of methylamines. It is a conjugate base of a trimethylammonium.
From the above content we can say that \[3^\circ \]Amine or tertiary amine has three hydrogens that are replaced by functional groups. Thus, no hydrogen group is present in it.

Hence, the correct answer is A.

Note: as amines are a chief constituent of nucleic acids, proteins and enzymes, alkaloid drugs, many others. The \[3^\circ \]amines, meanwhile they do not hydrogen bond to each other, so they have boiling points which are similar to hydrocarbons of the same molecular weight.