2.3.8. 2-((9-Methyl-9H-Carbazol-3-Yl)Methylene)-1*H*-Indene-1,3(2*H*)-Dione **PP18**

9-Methyl-9*H*-carbazole-3-carbaldehyde (0.54 g, 2.55 mmol), mexp = 671 mg, 1.99 mmol, 78% yield; 1H nmR (CDCl3) δ: 3.91 (s, 3*H*), 7.35 (t, 1*H*, J = 7.5 Hz), 7.43–7.48 (m, 2*H*), 7.54 (t, 1*H*, J = 7.3 Hz), 7.76–7.81 (m, 2*H*), 7.97–8.03 (m, 2*H*), 8.25 (d, 2*H*, J = 7.7 Hz), 8.69 (d, 1*H*, J = 8.7 Hz); 13C nmR (CDCl3) δ: 29.4, 108.7, 109.1, 120.7, 121.0, 122.9, 123.2, 123.6, 125.0, 125.6, 126.8, 128.6, 133.4, 134.6, 134.8, 140.0, 141.7, 142.5, 144.2, 148.8, 189.8, and 191.2; HRMS (ESI MS) m/z: theor: 337.1103 found: 337.1101 ([M]+. detected).
