反应详情

温度

45 °C

Under an atmosphere of argon, a mixture of 5-bromo-6-methoxy-nicotinic acid methyl ester (W. J. Thompson and J. Gaudino, J. Org. Chem. 49 (1984), 5237-5243) (100 mg, 0.406 mmol), 3-isopropylphenylboronic acid (73 mg, 0.447 mmol), tri-(tert-butyl)phosphonium tetrafluoroborate (7 mg, 0.024 mmol), tris(dibenzylideneacetone)dipalladium(0) (11 mg, 0.012 mmol) and potassium fluoride (78 mg, 1.34 mmol) in a flask was suspended in dioxane (1.5 ml) and heated to 45° C. for 3 h. After cooling, it was filtered over a small plug of silica gel and evaporated to dryness. Purification of the residue by silica gel chromatography (HEP/EA gradient) and subsequent RP HPLC (water/ACN gradient) yielded 63 mg of the title compound.

1. temperatureAfter cooling
2. filtrationit was filtered over a small plug of silica gel
3. customevaporated to dryness
4. customPurification of the residue by silica gel chromatography (HEP/EA gradient) and subsequent RP HPLC (water/ACN gradient)