反应详情

温度

80 °C

A mixture of 5-bromo-2-iodopyridine (600 mg, 2.11 mmol), (4-methoxyphenyl)boronic acid (353 mg, 2.32 mmol), tetrakis(triphenylphosphine)palladium(0) (122 mg, 0.106 mmol), and 2M Na2CO3 aq. (2.11 mL, 4.22 mmol) in toluene (10 mL) was heated at 80° C. for 40.5 hours under nitrogen. After cooling to room temperature, water was added and extracted with EtOAc. The organic layer was washed with brine, dried over Na2SO4 and filtered through a Celite pad. The filtrate was concentrated and the residue was purified by column chromatography (CH2Cl2 only) to afford the desired product (538 mg, 97%) as a yellow solid. 1HNMR (CDCl3) 400 MHz δ: 8.69 (d, J=2.3 Hz, 1H), 7.92 (dt, J=8.6 Hz and 2.3 Hz, 2H), 7.82 (dd, J=8.6 Hz and 2.3 Hz, 1H), 7.56 (d, J=8.6 Hz, 1H), 6.99 (dt, J=8.6 Hz and 2.3 Hz, 2H), 3.87 (s, 3H). LCMS: 264 [M+H].

1. temperatureAfter cooling to room temperature
2. extractionextracted with EtOAc
3. washThe organic layer was washed with brine
4. dry with materialdried over Na2SO4
5. filtrationfiltered through a Celite pad
6. concentrationThe filtrate was concentrated
7. customthe residue was purified by column chromatography (CH2Cl2 only)