“…69.0–69.3 °C (lit. 64–66 °C) [20] ; UV (MeOH): λ =282 nm; fluorescence (MeOH): λ ex =282 nm, λ em =360 nm; IR (ATR): =3401 (br), 3041, 2962, 2942, 2912, 2853, 1581, 1504, 1493, 1470, 1309, 1234, 1173, 1094, 1069, 992, 872, 775, 744, 690 cm −1 ; 1 H NMR (500 MHz, CDCl 3 ): δ =2.17 (s, 3 H), 2.33 (s, 3 H), 5.38 (br s, 1 H), 6.84–6.88 (m, 3 H), 6.90 (d, J =7.4 Hz, 1 H), 7.05 (t, J =7.6 Hz, 1 H), 7.10 (d, J =7.6 Hz, 1 H), 7.20–7.25 (m, 2 H) ppm; 13 C NMR and DEPT (126 MHz, CDCl 3 ): δ =13.80 (CH 3 ), 20.81 (CH 3 ), 116.74 (2 CH), 118.81 (CH), 119.93 (2 CH), 124.79 (CH), 126.08 (CH), 128.69 (C), 129.38 (CH), 138.01 (C), 140.96 (C), 145.07 (C) ppm; MS (EI): m/z (%)=197 (100, [ M ] + ), 182 (38), 180 (34), 167 (19), 120 (18), 77 (18); HRMS (ESI) calcd for C 14 H 16 N + ([ M +H] + ): 198.1277; found: 198.1280; elemental analysis (%) calcd for C 14 H 15 N: C 85.24, H 7.66, N 7.10; found: C 85.42, H 7.66, N 7.17.…”