A solution of (Z)-1,3-dihydro-5-ethynyl-3-[(1H-pyrrol-2-yl)methylene]-2H-indol-2-one (150 mg, 0.64 mmol) (from Example 82) and 1-iodo-4-nitrobenzene (175 mg, 0.70 mmol) (Aldrich) in N,N-dimethylformamide (3 mL) (Fisher Scientific) and triethylamine (3 mL) was degassed by bubbling argon through the solution for 15 minutes. Copper(I) iodide (13 mg, 0.068 mmol) (Aldrich) and (Ph3P)2PdCl2 (22 mg, 0.031 mmol) (Aldrich) were added, and the reaction mixture was heated at 70° C. for 13 hours. Water (15 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 ethyl acetate/hexane to give (Z)-1,3-dihydro-5-(4-nitrophenyl)ethynyl-3-[(1H-pyrrol-2-yl)methylene]-2H-indol-2-one as a red powder. (Yield 111 mg, 49%).
