“…49 Mp 211–212 °C (oxalate salt). 1 H NMR (400 MHz, CDCl 3 ) δ 8.07 (s, 1H), 7.83–7.94 (m, 4H), 7.56 (d, J = 7.2 Hz, 1H), 7.39 (t, J = 7.2 Hz, 1H), 7.32 (dt, J = 7.6, 1.2 Hz, 1H), 7.02–6.84 (m, 2H), 4.47 (t, J = 7.2 Hz, 2H), 3.96 (s, 2H), 3.85 (s, 3H), 3.09 (br s, 4H), 2.63 (br s, 4H), 2.47 (t, J = 7.2 Hz, 2H), 2.08–2.01(m, 2H), 1.66–1.58 (m, 2H); 13 C NMR (100 MHz, CDCl 3 ) δ 152.28, 148.17, 143.95, 143.53, 141.71, 141.37, 141.31, 129.19, 126.91, 126.89, 125.14, 124.53, 122.98, 122.35, 121.01, 120.24, 120.02, 119.42, 118.21, 111.17, 57.80, 55.39, 53.50, 50.68, 50.34, 36.98, 28.40, 23.86; Anal.…”