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Solution


Q.

Identify the compound that will react with Hinsberg’s reagent to give a solid which dissolves in alkali.          [2021]
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Ans.

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Benzene sulphonyl chloride (C6H5SO2Cl), which is also known as Hinsberg’s reagent, reacts with primary amines to form sulphonamides. The hydrogen attached to nitrogen in sulphonamide is strongly acidic due to the presence of strong electron withdrawing sulphonyl group. Hence, it is soluble in alkali.