2-Nitro-N-propylbenzenesulfonamide → 2-amino-N-propylbenzenesulfonamide

Participants

Reaction Steps

To a solution of 2-nitro-N-propylbenzenesulfonamide (8.64 g, 0.035 mol) in methanol (100 mL) was added palladium on carbon (10%, 3.5 g). The mixture was stirred under an atmosphere of hydrogen for 12 hours. The catalyst was removed by filtration and the filtrate was evaporated. The solid residue was washed with ether to afford 2-amino-N-propylbenzenesulfonamide (7.45 g, yield 98.3%), which was dissolved in ether, and bubbled in hydrochloride (gas) to afford the product 2-amino-N-propylbenzenesulfonamide hydrochloride (8.61 g, yield 98.4%). 1H NMR (400 MHz, DMSO-d6) δ ppm 8.14 (br s, 3H), 7.50-7.62 (m, 2H), 7.26-7.30 (dt, 1H, J=1.6 Hz, 7.6 Hz), 6.88-6.90 (d, 1H, J=8.0 Hz), 6.67-6.71 (m, 1H), 2.61-2.65 (t, 2H, J=7.2 Hz), 1.28-1.37 (sext, 2H, J=7.2 Hz), 0.72-0.76 (t, 3H, J=7.6 Hz).

Provenance & Evidence