反应详情

温度

135 °C

A mixture of 4-bromo-5-methyl-2,3-dihydrobenzofuran-7-amine (1e) (0.80 g, 3.5 mmol), pyridin-4-ylboronic acid (0.86 g, 7 mmol), Cs2CO3 (2.84 g, 8.7 mmol), Pd(PPh3)4 (0.40 g, 0.346 mmol) and water (7 mL) in DMF (35 mL) was stirred at 135° C., under N2 for 1 h. It was cooled to ambient temperature, poured into water (50 mL), extracted with EtOAc (150 mL), washed with water, brine, dried and concentrated. The residue was purified by column chromatography on silica gel eluting with hexanes/EtOAc (20:1 to 5:1 to 1:1) to give the title compound (1f) as a yellow solid. MS-ESI (m/z): 227 (M+1)+.

1. temperatureIt was cooled to ambient temperature
2. extractionextracted with EtOAc (150 mL)
3. washwashed with water, brine
4. customdried
5. concentrationconcentrated
6. customThe residue was purified by column chromatography on silica gel eluting with hexanes/EtOAc (20:1 to 5:1 to 1:1)