Question:

Which of the following is used as Hinsberg?? reagent?

Updated On: Jul 7, 2022
  • $C_6H_5SO_2Cl$
  • $C_6H_5SO_3H$
  • $C_6H_5NHCH_3$
  • $C_6H_5COCH_3$
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The Correct Option is A

Solution and Explanation

Hinsberg's reagent is used to differentiate the amines into $1^{0}$ or $2^{0}$ or $3^{0}$. The chemical formula for Hinsberg reagent is $C _{6} H _{5} SO _{2} Cl$ i.e Benzene sulphonyl chloride. Primary amines get converted to sulphonamide in presence of Hinsberg reagent which is soluble in $NaOH$ secondary amines get converted to sulphonamide in presence of Hinsberg reagent which is insoluble in $NaOH$ There is no reaction of Hinsberg reagent with tertiary amines.
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Concepts Used:

Amines

Amine is a type of compound which is derived from ammonia (NH3). According to Organic chemistry, they are basically classified as the functional groups of the organic nitrogen compounds that contain nitrogen atoms with a lone pair.

Amine - Types

Primary Amines:

It is formed when one hydrogen atom in ammonia is substituted by an alkyl or aromatic group. Amino acids and methyl amine are the best examples that why aromatic amines include aniline.

Secondary Amines:

Amines that have two organic substitutes either alkyl or aryl ones or both and are bound to the nitrogen together with one hydrogen are termed as secondary amines. For Example, Dimethylamine.

Tertiary Amines:

Tertiary Amines are the amines where the nitrogen consists of three organic substitutes. For example, Trimethylamine and EDTA.