反应详情

温度

80 °C

To a suspension of 2-bromo-4-methoxypyridine (2.5 g), 4-methyl-3-nitrophenylboronic acid (3.37 g) and tetrakis(triphenylphosphine)-palladium (768 mg) in 1,2-dimethoxyethane (100 ml) was added 2M aqueous solution of sodium carbonate (18.6 ml). The mixture was stirred at 80° C. for 7 hours under a nitrogen atmosphere, then cooled to room temperature and diluted with ethyl acetate. The organic layer was separated, washed with water and brine and dried over sodium sulfate. The solvent was evaporated under reduced pressure. Methanol was added to the residue. The precipitate was collected by filtration and dried under reduced pressure to give 4-(4-methoxypyridin-2-yl)-2-nitrotoluene (3.09 g).

1. temperaturecooled to room temperature
2. customThe organic layer was separated
3. washwashed with water and brine
4. dry with materialdried over sodium sulfate
5. customThe solvent was evaporated under reduced pressure
6. additionMethanol was added to the residue
7. filtrationThe precipitate was collected by filtration
8. customdried under reduced pressure