反应详情

温度

90 °C

A solution of (Z)-4-bromo-1,3-dihydro-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-5-nitro-2H-indol-2-one (112 mg, 0.31 mmol) (Starting Material 6), 5-indoleboronic acid (71 mg, 0.44 mmol) (from Example 40, Step A, supra) and sodium carbonate (110 mg, 1.03 mmol) were dissolved in 10 mL DMF and 5 mL water. The solution was degassed for 30 minutes by bubbling argon through the solution. At this time, dichlorobis(triphenylphosphine) palladium(II) (11 mg) (Aldrich) was added, and the reaction was heated, under argon, at 90° C. for 2 days. Water (20 mL) was then added and the precipitate was filtered off and dried. The product was purified via flash column chromatography (SiO2, 230-400 mesh) with 5% MeOH/CHCl3 to give (Z)-1,3-dihydro-4-(5-indolyl)-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-5-nitro-2H-indol-2-one as a red powder. (Yield 38 mg, 76%).

1. customThe solution was degassed for 30 minutes
2. customby bubbling argon through the solution
3. additionAt this time, dichlorobis(triphenylphosphine) palladium(II) (11 mg) (Aldrich) was added
4. additionWater (20 mL) was then added
5. filtrationthe precipitate was filtered off
6. customdried
7. customThe product was purified via flash column chromatography (SiO2, 230-400 mesh) with 5% MeOH/CHCl3