“…61-63°C, R f = 0.42 (PE/EtOAc 10 : 1, v/v). 1 H NMR (400 MHz, CDCl 3 ) δ 8.13-8.07 (m, 2H, ArH), 7.57-7.45 (m, 3H, ArH), 7.42-7.34 (m, 2H), 7.32-7.22 (m, 2H, ArH). 13 C NMR (101 MHz, CDCl 3 ) δ 166.0 (d, J F-C = 257.4 Hz), 137.9, 132.7, 131.7, 130.42 (d, J F-C = 9.8 Hz), 128.7, 117.7, 116.73 (d, J F-C = 22.9 Hz), 93.7, 85.2.…”