反应详情

温度

60 °C

Benzyl bromide (3.87 g, 22.6 mmol), was added to a suspension of methyl 6-bromo-3-hydroxypicolinate (5.00 g, 21.6 mmol) and K2CO3 (5.96 g, 43.1 mmol) in anhydrous DMF (40 mL). The reaction mixture was heated at 60° C. for 18 hours, cooled to rt, and poured into an ice/water mixture. After stirring for 2.5 hours, the precipitate was collected by filtration, washed with water, and dried to provide the desired product methyl 3-(benzyloxy)-6-bromopicolinate (29A).

1. temperaturecooled to rt
2. filtrationthe precipitate was collected by filtration
3. washwashed with water
4. customdried