反应详情

温度

100 °C

To a solution of 7-[(4-bromo-5-ethyl-2-thienyl)methoxy]-2H-chromene-3-carbaldehyde (150 mg) in dioxane (4.5 mL) were added [2-(trifluoromethyl)phenyl]boric acid and a 2 M aqueous Na2CO3 solution at 25° C. Then, to the reaction mixture were added palladium acetate (4.44 mg) and PPh3 (20.75 mg), followed by warming to 100° C. and stirring for 5 hours. To the reaction liquid was added a saturated aqueous NH4Cl solution (30 mL), followed by extraction with EtOAc (30 mL) three times. The organic layer was washed with brine, dried over MgSO4, and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (automatic purification device, hexane:EtOAc=95:5 to 80:20) to obtain 7-({5-ethyl-4-[2-(trifluoromethyl)phenyl]-2-thienyl}methoxy)-2H-chromene-3-carbaldehyde (134.8 mg) as a pale yellow liquid.

1. customat 25° C
2. customTo the reaction liquid
3. extractionfollowed by extraction with EtOAc (30 mL) three times
4. washThe organic layer was washed with brine
5. dry with materialdried over MgSO4
6. concentrationconcentrated under reduced pressure
7. customThe residue was purified by silica gel column chromatography (automatic purification device, hexane:EtOAc=95:5 to 80:20)