2-Amino-4-nitrobenzonitrile → 2-(Aminomethyl)-5-nitroaniline

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Reaction Steps

Borane-dimethyl sulfide (40 mL, 80 mmol) was added dropwise to a stirring solution of 2-amino-4-nitro-benzonitrile (2.27 g, 14 mmol) in dry THF (50 mL) at room temperature. The mixture was stirred at same temperature for 3 hours, and then carefully quenched with 1N aqueous HCl. The mixture was made basic (pH>11) with 4N sodium hydroxide and extracted with methylene chloride. The organic phase was dried over sodium sulfate, filtered and concentrated to provide 1.75 g of 2-aminomethyl-5-nitro-phenylamine (75%): 1H NMR (300 MHz, CDCl3) δ7.6 (m, 2H), 7.25 (d, 1H), 5.1 (br, 2H), 4.1 (s, 3H); MS (m/e): 168.1 (M+1).

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