反应详情

温度

85 °C

N-(7-Bromobenzo[d]thiazol-2-yl)acetamide (56.5 mg, 0.208 mmol), 4-methoxybenzeneboronic acid (47.8 mg, 0.315 mmol), dichlorobis(triphenyl-phosphine)palladium (II) (30.7 mg, 43.7 μmol), and sodium carbonate (0.31 mL, 2 M, 0.62 mmol) were suspended in EtOH (0.25 mL) and 1,2-dimethoxyethane (0.9 mL). The flask was fit with a reflux condensor and placed in a preheated oil bath (85° C.) and stirred under nitrogen for 50 minutes. The reaction was cooled to RT, and filtered through a pad of Celite® (diatomaceous earth). This pad was washed with DCM and MeOH, and the filtrate was concentrated and filtered through a silica gel pad with 10:1 DCM/MeOH. The filtrate was concentrated and purified on HPLC (10-95% MeCN/water with 0.1% TFA over 30 minutes) to provide N-(7-(4-methoxyphenyl)benzo[d]thiazol-2-yl)acetamide. MS (ESI pos. ion) m/z: 299 (MH+). Calculated exact mass for C16H14N2O2S: 298. 1H NMR (400 MHz, DMSO-d6): 12.34 (s, 1H), 7.70 (d, J=8.0 Hz, 1H), 7.63 (d, J=8.5 Hz, 5H), 7.51 (t, J=7.8 Hz, 1H), 7.34 (d, J=7.5 Hz, 1H), 7.12 (d, J=8.5 Hz, 2H), 3.81 (s, 3H), 2.20 (s, 3H).

1. customplaced in a preheated oil bath
2. temperatureThe reaction was cooled to RT
3. filtrationfiltered through a pad of Celite® (diatomaceous earth)
4. washThis pad was washed with DCM and MeOH
5. concentrationthe filtrate was concentrated
6. filtrationfiltered through a silica gel pad with 10:1 DCM/MeOH
7. concentrationThe filtrate was concentrated
8. custompurified on HPLC (10-95% MeCN/water with 0.1% TFA over 30 minutes)