An amine ‘X’ reacts with Hinsberg reagent and the product obtained is insoluble in alkali. The amine ‘X’ is:
Show Hint
- (CH$_3$)$_2$–NH
- (CH$_3$)$_3$N
- CH$_3$–CH$_2$–NH$_2$
- \chemfig{*6(=-=-=-)-NH_2} (Aniline)
The Correct Option is A
Solution and Explanation
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Amines are usually formed from amides, imides, halides, nitro compounds, etc. They exhibit hydrogen bonding which influences their physical properties. In alkyl amines, a combination of electron releasing, steric and H-bonding factors influence the stability of the substituted ammonium cations in protic polar solvents and thus affect the basic nature of amines. Alkyl amines are found to be stronger bases than ammonia. Amines being basic in nature, react with acids to form salts. Aryldiazonium salts, undergo replacement of the diazonium group with a variety of nucleophiles to produce aryl halides, cyanides, phenols and arenes.
Why is the pK$_b$ value of aniline more than that of methylamine?Amines are usually formed from amides, imides, halides, nitro compounds, etc. They exhibit hydrogen bonding which influences their physical properties. In alkyl amines, a combination of electron releasing, steric and H-bonding factors influence the stability of the substituted ammonium cations in protic polar solvents and thus affect the basic nature of amines. Alkyl amines are found to be stronger bases than ammonia. Amines being basic in nature, react with acids to form salts. Aryldiazonium salts, undergo replacement of the diazonium group with a variety of nucleophiles to produce aryl halides, cyanides, phenols and arenes.
Arrange the following in increasing order of their basic strength in aqueous solution:
CH$_3$–NH$_2$, (CH$_3$)$_2$NH, (CH$_3$)$_3$N
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