Question
What is Hinsberg reagent?
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Answer
Benzenesulphonyl chloride (C6H5SO2Cl), is also known as Hinsberg’s reagent. It reacts with primary and secondary amines to form sulphonamides. Secondary and tertiary amines can be distinguished by allowing them to react with Hinsberg’s reagent (benzenesulphonyl chloride C6H5SO2Cl). Secondary amines react with Hinsberg’s reagent to form a product that is insoluble in an alkali. For example, N, N-diethylamine reacts with Hinsberg’s reagent to form N, N-diethylbenzenesulphonamide, which is insoluble in an alkali. Tertiary amines, however, do not react with Hinsberg’s reagent.
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Predict the stereochemistry of the product formed if an optically active alkyl halide undergoes substitution reaction by SN2 mechanism.
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