1H-NMR (300 MHz, DMSO-d6): δ 7.05 (d, J = 8.1 Hz, 1H, Ar-H), 6.56 (d, J = 2.0 Hz, 1H, Ar-H), 6.42 (dd, J = 8.1, 2.2 Hz, 1H, Ar-H), 4.99 (s, 2H, Ar-NH2) 2.10 (s, 3H, C-CH3), 1.15 (s, 6H, 2C-CH3). 13C-NMR (300 MHz, DMSO-d6): δ 181.97, 147.59, 146.95, 144.33, 119.81, 112.56, 108.19, 53.00, 23.48, 15.20. IR (ATR): 3334, 3192, 2958, 2923, 2862, 1670, 1617, 1576, 1460, 1422, 1377, 1344, 1286, 1221, 1113, 1062, 945, 859, 820. GC-MS (EI) m/z: 174.09 (M+).