“…1 H NMR (400 MHz, chloroform-d) δ 8.48 (s, 1H), 8.16 (d, J = 1.9 Hz, 2H), 7.98 (d, J = 8.5 Hz, 2H), 7.69 (d, J = 8.4 Hz, 2H), 7.51 (dd, J = 8.7, 1.9 Hz, 2H), 7.43 (d, J = 8.6 Hz, 2H), 2.30 (s, 3H), 1.50 (s, 19H). 13 Synthesis of 4-(3,6-di-tert-butyl-9H-carbazol-9yl)benzaldehyde O-acryloyl oxime (Ph-N-CZ-4): Ph-N-CZ-4 was prepared via similar procedure described for Ph-N-CZ-1. Purification by column chromatography (petroleum ether/dichloromethane = 1:0.8) gave 0.151 g of the product as yellow solid powder.…”