4-Isopropoxy-N-methyl-3-nitrobenzenesulfonamide → 3-amino-N-methyl-4-[(1-methylethyl)oxy]benzenesulfonamide

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Reaction Steps

To a mixture of N-methyl-4-[(1-methylethyl)oxy]-3-nitrobenzenesulfonamide (1.6 g, 5.8 mmol) in ethanol (20 mL) under nitrogen, Pd/C (0.160 g) was added. The flask was then evacuated and recharged with hydrogen three times. The resulting mixture was allowed to stir under a hydrogen atmosphere overnight at room temperature. The mixture was then filtered and concentrated to afford 3-amino-N-methyl-4-[(1-methylethyl)oxy]benzenesulfonamide (1.1 g, 77%) as a white solid. 1H NMR (400 MHz, DMSO-d6) δ 7.01-7.10 (m, 2H), 6.87-6.98 (m, 2H), 5.08 (br. s., 2H), 4.63 (dt, J=5.93, 11.98 Hz, 1H), 2.34-2.41 (m, 3H), 1.29 (d, J=6.02 Hz, 6H); MS (m/z) 244.7 (M+H+)

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