反应详情

温度

100 °C

A 25-mL single-neck round-bottomed flask equipped with a reflux condenser was charged with 201a (64 mg, 0.20 mmol), {3-[(acetyloxy)methyl]-2-{4,4-dimethyl-9-oxo-1,10-diazatricyclo[6.4.0.02,6]dodeca-2(6),7-dien-10-yl}pyridin-4-yl}boronic acid 199e (160 mg, 0.40 mmol), Pd(dppf)Cl2 (10 mg, 0.012 mmol), K3PO4 (100 mg, 0.39 mmol), NaOAc.3H2O (60 mg, 0.44 mmol), water (6 drops), and acetonitrile (5 mL). The system was evacuated and refilled with N2. The reaction mixture was stirred at 100° C. for 2 h. It was then cooled to room temperature and filtered. The filtrate was concentrated under reduced pressure and the resulting residue was purified by silica-gel column chromatography eluting with 20:1 dichloromethane/methanol to afford 201b (40 mg, 34%) as a yellow brown solid. MS-ESI: [M+H]+ 593.2.

1. customA 25-mL single-neck round-bottomed flask equipped with a reflux condenser
2. customThe system was evacuated
3. additionrefilled with N2
4. temperatureIt was then cooled to room temperature
5. filtrationfiltered
6. concentrationThe filtrate was concentrated under reduced pressure
7. customthe resulting residue was purified by silica-gel column chromatography
8. washeluting with 20:1 dichloromethane/methanol