Reaction Steps
A solution of 12 (0.2 g, 0.4 mmol) and 2-iodoethanol (0.7 g, 4 mmol) in acetonitrile (10 mL) was heated to 120° C. in sealed tube for 24 h. After cooling down to room temperature, the solvent was removed and the resulting mixture was purified by precipitation from methanol and ethyl acetate to afford SAOH (0.13 g) in 52% yield. 1H NMR (400 MHz, CDCl3) δ 8.98 (d, J=9.2 Hz, 2H), 8.77 (d, J=8.4 Hz, 2H), 8.44 (s, 1H), 8.36 (t, J=8.0 Hz, 2H), 8.18 (d, J=8.4 Hz, 1H), 8.17 (d, J=16 Hz, 1H), 7.91 (d, J=8.0 Hz, 1H), 7.86 (t, J=8.0 Hz, 2H), 7.62 (d, J=8.8 Hz, 1H), 7.55 (d, J=8.4 Hz, 1H), 7.52 (t, J=6.4 Hz, 2H), 7.48 (d, J=16 Hz, 1H), 7.33 (t, J=6.4 Hz, 1H), 5.63 (t, J=6.0 Hz, 2H), 4.75 (t, J=7.6 Hz, 1H), 4.59 (t, J=6.0 Hz, 2H), 4.51-4.47 (m, 2H), 3.94 (t, J=6.0 Hz, 2H), 3.57-3.55 (m, 2H), 3.47-3.44 (m, 2H), 3.33 (s, 3H). 13C NMR (400 MHz, CDCl3) δ 158.2, 149.1, 141.9, 140.7, 140.6, 138.1, 129.1, 126.9, 126.5, 126.4, 124.3, 123.3, 122.4, 121.2, 120.9, 120.0, 119.0, 117.0, 109.6, 109.2, 71.8, 70.6, 69.1, 59.3, 58.9, 52.2, 43.3. HRMS (MALDI-TOF) m/z Calcd for C34H33N2O3+ 517.2486 Found 517.2476 [M]+.
