2.3.1. 2-(4-(Dodecyloxy)Benzylidene)-1*H*-Indene-1,3(2*H*)-Dione **PP11**

4-(Dodecyloxy)benzaldehyde (0.74 g, 2.55 mmol), mexp = 790 mg, 1.89 mmol, 74% yield. 1H nmR (CDCl3) δ: 0.88 (t, 3*H*, J = 6.4 Hz), 1.21–1.54 (m, 18*H*), 1.83 (qt, 2*H*, J = 7.8 Hz), 4.07 (t, 2*H*, J = 6.5 Hz), 7.01 (d, 2*H*, J = 8.9 Hz), 7.77–7.85 (m, 2*H*), 7.85 (s, 1*H*), 7.97–8.00 (m, 2*H*), 8.54 (d, 2*H*, J = 8.9 Hz); 13C nmR (CDCl3) δ: 14.1, 22.7, 26.0, 29.1, 29.3, 29.54, 29.58, 29.62, 29.64, 31.9, 68.5, 114.9, 123.0, 126.3, 126.4, 134.8, 135.0, 137.3, 140.0, 142.4, 147.0, 163.8, 189.6, and 190.9; HRMS (ESI MS) m/z: theor: 418.2508 found: 418.2503 ([M]+. detected).

#### 2.3.2. 2-(3,4-Dibutoxybenzylidene)-1*H*-Indene-1,3(2*H*)-Dione **PP12**

3,4-Dibutoxybenzaldehyde (0.64 g, 2.55 mmol), mexp = 820 mg, 2.17 mmol, 85% yield. 1H nmR (CDCl3) δ: 1.00 (t, 3*H*, J = 7.5 Hz), 1.02 (t, 3*H*, J = 7.5 Hz), 1.48–1.63 (m, 4*H*), 1.83–1.93 (m, 4*H*), 4.12 (t, 2*H*, J = 6.6 Hz), 4.23 (t, 2*H*, J = 6.4 Hz), 6.95 (d, 1*H*, J = 8.5 Hz), 7.77–7.82 (m, 4*H*), 7.96–8.00 (m, 2*H*), 8.72 (d, 1*H*, J = 1.7 Hz); 13C nmR (CDCl3) δ: 13.8, 13.9, 19.2, 19.3, 31.0, 31.2, 68.8, 68.9, 112.1, 117.6, 123.0, 126.2, 126.6, 131.2, 134.7, 134.9, 140.0, 142.5, 147.6, 148.8, 154.4, 189.7, and 190.9; HRMS (ESI MS) m/z: theor: 378.1831 found: 378.1832 ([M]+. detected).

#### 2.3.3. 2-(2,4-Dibutoxybenzylidene)-1*H*-Indene-1,3(2*H*)-Dione **PP13**

2,4-Dibutoxybenzaldehyde (0.64 g, 2.55 mmol), mexp = 723 mg, 1.91 mmol, 75% yield. 1H nmR (CDCl3) δ: 1.00 (t, 3*H*, J = 7.4 Hz), 1.02 (t, 3*H*, J = 7.3 Hz), 1.46–1.64 (m, 6*H*), 1.76–1.94 (m, 4*H*), 4.07 (t, 2*H*, J = 6.4 Hz), 4.08 (t, 2*H*, J = 6.4 Hz), 6.42 (d, 1*H*, J = 2.2 Hz), 6.61 (dd, 1*H*, J = 9.0 Hz, J = 2.2 Hz), 7.73–7.76 (m, 2*H*), 7.94–7.97 (m, 2*H*), 8.51 (s, 1*H*), 9.22 (d, 1*H*, J = 9.0 Hz); 13C nmR (CDCl3) δ: 13.7, 13.8, 19.2, 31.1, 31.2, 68.2, 68.6, 98.8, 106.1, 116.1, 122.7, 122.8, 125.2, 134.5, 124.6, 136.5, 140.0, 141.3, 142.3162.7, 166.1, 189.8, and 191.2; HRMS (ESI MS) m/z: theor: 378.1831 found: 378.1834 ([M]+. detected)
