“…1 H NMR (300 MHz, DMSO-d 6 ): δ = 2.54 (4H, t, J = 5.0 Hz, piperazine), 3.00 (2H, d, J = 6.5 Hz, Allyl-H), 3.34 (4H, t, J = 5.1 Hz, piperazine), 5.12−5.21 (2H, m, Allyl-H), 5.76−5.88 (1H, m, Allyl-H), 6.87 (2H, d, J = 9.0 Hz, Ar−H), 7.43−7.47 (2H, m, Ar−H), 7.62 (1H, d, J = 15.6 Hz, Ar−H), 7.75−7.81 (4H, m, Ar−H), 7.89 (1H, d, J = 15.6 Hz, Ar−H), 7.97 (3H, d, J = 8.9 Hz, Ar−H) 13. C NMR (75 MHz, DMSOd 6 ): δ = 47.3, 52.7, 61.8, 113.5, 113.5, 118.6, 122.1, 123.8, 126.7, 127.2, 127.8, 128.3, 128.6, 130.3, 130.7, 132.8, 133.4, 134.2, 134.6, 143.2, 154.1, 188.0.…”