“…1 H NMR for 5j′ (400 MHz, CDCl 3 ): δ 2.03 (quint, J = 6.4 Hz, 2H), 2.26 (s, 3H), 2.86 (t, J = 6.4 Hz, 2H), 3.81 (t, J = 6.4 Hz, 2H), 7.19 (t, J = 8.0 Hz, 1H), 7.34 (d, J = 7.6 Hz, 1H), 7.71 (d, J = 7.6 Hz, 1H). The analytical data matched those reported in the literature …”