反应详情

Using Method J above, 4-bromopyridine hydrochloride (110 mg, 0.57 mmol) (Aldrich) was coupled with (Z)-1,3-dihydro-4-ethynyl-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one (Starting Material 5) (100 mg, 0.38 mmol) using DPPFPdCl2 (15.4 mg) (Aldrich) and CuI (4 mg) (Aldrich) as catalyst in DMF (5 mL) and Et3N (5 mL) as solvent and heating at reflux for 1 day, yielding (Z)-1,3-dihydro-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-4-[(4-pyridinyl)ethynyl]-2H-indol-2-one. (Yield 70 mg, 54%).

1. temperatureat reflux for 1 day