Sodium Carbonate → (Z)-1,3-dihydro-4-(4-hydroxyphenyl)-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-5-nitro-2H-indol-2-one

Beteiligte Stoffe

Reaktionsschritte

Using Method S above, 4-hydroxyphenyl boronic acid (85.0 mg, 0.62 mmol) (see Gilman, supra) was coupled with (Z)-4-bromo-1,3-dihydro-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-5-nitro-2H-indol-2-one (150 mg, 0.41 mmol) (Starting Material 6) using DPPFPdCl2 (17 mg) (Aldrich) as catalyst in aqueous 2M Na2CO3 (0.42 mL, 0.84 mmol) and DME (15 mL) at reflux for 1 day to give (Z)-1,3-dihydro-4-(4-hydroxyphenyl)-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-5-nitro-2H-indol-2-one (yield: 11 0 mg, 52%).

Herkunft & Nachweise