“…1 H NMR (399.8 MHz, CDCl 3 ): δ 8.03 (d, 3 J HH = 9 Hz, 2H, aryl CH), 7.85 (d, 3 J HH = 9 Hz, 4H, aryl CH), 7.00−6.95 (m, 6H, aryl CH), 3.87 (s, 3H, OCH 3 ), 3.86 (s, 6H, OCH 3 ) ppm. 13 C NMR (100.5 MHz, CDCl 3 ): δ 160.8, 160.7, 137.9, 137.8, 127.1, 127.0, 125.2 (t, 4 J CF = 3 Hz), 114.6, 114.3, 55.9, 55.7 ppm. 11 B NMR (128.3 MHz, CDCl 3 ): δ −0.5 (t, 1 J BF = 29 Hz) ppm.…”