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Which of the following amines, on reaction with benzenesulphonyl chloride, will give a sulphonamide that is insoluble in alkali?(a) Ethylamine(b) Ethylmethylamine(c) Trimethylamine(d) AnilineI have been asked this question in a job interview.My question is based upon Amines Chemical Reactions topic in chapter Amines of Chemistry – Class 12 |
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Answer» CORRECT choice is (b) Ethylmethylamine Explanation: Secondary amines on reaction with Hinsberg’s reagent produce sulphonamides without any hydrogen atom attached to the nitrogen atom. Hence, it is not acidic and therefore INSOLUBLE in alkali. The AMIDE PRODUCED in this CASE is N-ethyl-N-methylbenzenesulphonamide. |
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