“…The analytical data were in accordance with the literature. 24 Mp 69-71 °C. 1 H NMR (400 MHz, CDCl 3 ): = 8.07 (d, J = 7.6 Hz, 2 H), 7.67 (d, J = 7.6 Hz, 2 H), 7.16 (d, J = 7.7 Hz, 2 H), 6.87 (td, J 1 = 1.5 Hz, J 2 = 8.8 Hz, 1 H), 2.67 (s, 3 H).…”