反应条件: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: To solution of 2-(1-methyl-1H-indol-7-yl)-acetamide (0.300 g, 1.59 mmol) in DMF (15 mL) was added a 1.0 M solution of potassium tert-butoxide in THF (1.59 mL, 1.59 mmol), followed after 5 minutes by (6-bromo-1H-indol-3-yl)-oxo-acetic acid methyl ester (0.235 g, 0.83 mmol) in DMF (1.25 mL). After another 5 minutes additional potassium tert-butoxide (1.59 mL) was introduced followed by the additional (6-bromo-1H-indol-3-yl)-oxo-acetic acid methyl ester (0.235 g, 0.83 mmol) in DMF (1.25 mL). The reaction was stirred for 5 minutes and an additional potassium tert-butoxide (1.59 mL) was introduced. After heating at 50° C. over night, then deep red solution and was cooled to room temperature, quenched with 1N HCl and poured in EtOAc. The two layers were separated and the organic layer was washed with H2O, saturated aq NaHCO3, and brine (×3), dried (MgSO4), filtered, and concentrated. Flash chromatography (80% EtOAc/hexane) gave the title compound (0.256 g, 38%) as a red solid. 1H NMR (400 MHz, DMSO-d6) 3.64 (s, 3H), 6.26 (d, J=4.4 Hz, 1H), 6.47 (d, J=2.8 Hz, 1H), 6.60 (dd, J=2, 8.8 Hz, 1H), 6.88 (d, J=7.2 Hz, 1H), 6.98 (dd, J=7.2, 7.2 Hz, 1H), 7.24 (d, J=3.6 Hz, 1H), 7.61 (dd, J=1.2, 8 Hz, 1H), 7.87 (d, J=2.8 Hz, 1H), 11.18 (s, 1H), 11.91 (s, 1H). MS (electrospray, m/z) 420/418 (M−−1).
deep red solution and was cooled to room temperature
quenched with 1N HCl
poured in EtOAc
The two layers were separated
the organic layer was washed with H2O, saturated aq NaHCO3, and brine (×3)
dried (MgSO4)
filtered
concentrated
来源 ID: ord-f790b61639bf494b9f1738a8817378fa