“…Eluent, hexane/ethyl acetate = 1:1; yellow-white powder, 34 mg, 9% yield; mp: 153–155 °C (lit . 158–159 °C); FT-IR (diamond ATR): 1590, 1484, 1413, 1263, 1215, 1022, 817, 592, 498 cm –1 ; 1 H NMR (600 MHz, CDCl 3 ): δ 8.74 (dd, J = 1.4, 4.1 Hz, 2H), 8.00 (d, J = 8.9 Hz, 1H), 7.90 (dd, J = 1.7, 4.8 Hz, 2H), 7.38 (d, J = 2.1 Hz, 1H), 7.15 (dd, J = 2.4, 8.4 Hz, 1H), 3.91 (s, 3H); 13 C{ 1 H} NMR (151 MHz, CDCl 3 ): δ 162.5, 158.7, 150.8, 148.7, 140.8, 136.9, 124.6, 121.1, 116.7, 104.2, 56.0.…”