“…1 H NMR (400 MHz, CDCl 3 ) δ = 7.62−7.60 (m, 2H), 7.42 (s, 1H), 7.31−7.26 (m, 3H), 7.18−7.11 (m, 4H), 6.72 (s, 1H), 2.32 (s, 3H) ppm; 13 C { 1 H} NMR (100 MHz, CDCl 3 ) δ = 154. 3, 139.9, 136.2, 132.7, 131.3, 131.1, 129.6, 129.2 (2C), 128.1, 128.0, 127.8, 126.4, 124.3 (2C) 7.75 (m, 2H), 7.50 (br s, 1H), 7.47−7.43 (m, 4H), 7.34−7.28 (m, 2H), 7.11−7.09 (m, 1H), 2.36 (s, 3H) ppm; 13 C { 1 H} NMR (100 MHz, DMSO-d 6 ) δ = 153. 9, 138.9, 137.9, 131.6, 130.1, 128.8 (2C), 128.6, 127.8, 127.7, 127.6, 126.0, 123.4 (2C), 122.6, 104.4, 20.9…”