反应详情

This compound was prepared, starting from compound 100 (2.00 g, 4.84 mmol), according to the procedure developed for compound 95. Reaction time at 100° C.: 15 min; the purification was performed using column chromatography (Al2O3, AcOEt/cyclohexane, 9/1, v/v) to give compound 101 (1.52 g, 3.52 mmol) as a beige solid. Yield 73%; Rf (Al2O3, AcOEt/cyclohexane, 9/1, v/v) 0.49; mp 76-78° C.; IR (KBr) ν 1555, 1654, 2962 cm−1; 1H NMR (200 MHz, CDCl3) δ 1.09 (t, 6H, J=7.1 Hz), 2.64 (q, 4H, J=7.1 Hz), 2.75 (t, 2H, J=6.4 Hz), 3.66 (q, 2H, J=6.4 Hz), 7.54 (d. 1H, J=4.7 Hz), 8.68 (d, 1H, J=2.1 Hz), 8.76 (d, 1H, J=4.7 Hz), 9.07 (d, 1H, J=2.1 Hz), 11.01 (m, 1H); MS m/z 433 (M+2, 1), 431 (M+, 1), 360 (1), 358 (1), 317 (1), 315 (3), 289 (1), 287 (1), 191 (1), 189 (2), 161 (3), 126 (2), 99 (9), 86 (100), 71 (2), 58 (9).

1. customThis compound was prepared
2. customReaction time at 100° C.
3. custom15 min
4. customthe purification