“…= 293-294 • C 1. H-NMR (CF 3 COOD): δ = 10.12-10.08 (m, 1H, CH ar ),10.01 (d, 1H, J = 8.3 Hz, CH ar ), 9.62 (d, 1H, J = 8.3 Hz, CH ar ), 9.53 (d, 1H, J = 6.3 Hz, CH ar ), 9.41 (d, 1H, J = 6.4 Hz, CH ar ), 9.35-9.30 (m, 1H, CH ar ), 9.04-8.99 (m, 2H, CH ar ), 3.93 (s, 3H, CH 3 ), 3.63 (s, 3H, CH 3 ). 13 C-NMR (CF 3 COOD): δ = 188.22, 184.11, 155.54 (C=O), 150.00, 145.47, 140.94, 138.84, 137.20 (2C), 137.12, 133.70, 133.00, 132.35, 128.91, 128.89, 127.67, 126.65, 125.56, 119.02, 117.76 (C ar ), 17.33, 15.47 (CH 3 ).…”