Water → N-Methyl-4-nitrobenzenesulfonamide

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Methylamine (2 M in tetrahydrofuran) (24 mL, 47.5 mmol) was added to an ambient temperature solution of p-nitrobenzenesulfonyl chloride (3.5 g, 15.8 mmol) in tetrahydrofuran (30 mL). After stirring at ambient temperature for 30 min, the reaction mixture was poured into water and extracted with ethyl aceate. The organic phase was dried (magnesium sulfate) and concentrated to afford N-methyl-4-nitrobenzenesulfonamide which was used without further purification.

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