Ammonia → N-(2-(Aminomethyl)phenyl)-N-methylmethanesulfonamide

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To a solution of N-(2-cyanophenyl)-N-methylmethanesulfonamide (16.0 g, 76 mmol) in a solution of ammonia in ethanol (500 mL, 4 mol·L−1) was added palladium on carbon (10%, 4 g). The mixture was stirred under an atmosphere of hydrogen for 24 hours. The catalyst was removed by filtration and the filtrate was evaporated. The residue was washed with ether to give N-(2-(aminomethyl)phenyl)-N-methylmethanesulfonamide (14.2 g, yield 87.1%). 1H NMR (400 MHz, CDCl3) δ ppm 7.53-7.55 (m, 1H), 7.36-7.40 (m, 1H), 7.29-7.33 (m, 1H), 7.23-7.25 (m, 1H), 3.97-3.99 (br d, 2H, J=8.0 Hz), 3.27 (s, 3H), 3.00 (s, 3H). N-(2-(aminomethyl)phenyl)-N-methylmethanesulfonamide was dissolved in ether and bubbled in hydrochloride (gas) to afford the product N-(2-(aminomethyl)phenyl)-N-methylmethanesulfonamide hydrochloride (15.0 g, yield 90.4%). 1H NMR (400 MHz, CDCl3) δ ppm 7.54-7.55 (m, 1H), 7.35-7.40 (m, 1H), 7.28-7.33 (m, 1H), 7.24-7.26 (m, 1H), 3.99 (br s, 2H), 3.25 (s, 3H), 2.98 (s, 3H).

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