[CH2:1]([N:4]1[C:12]2[C:7](=[CH:8][CH:9]=[CH:10][CH:11]=2)[C:6](=[O:13])[C:5]1=[O:14])[C:2]#[CH:3].[Cl:15][C:16]1[CH:21]=[CH:20][C:19](I)=[CH:18][C:17]=1[Cl:23].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C(N(CC)CC)C>CN(C=O)C.[Cu]I.CC([O-])=O.CC([O-])=O.[Pd+2]>[Cl:15][C:16]1[CH:21]=[C:20]([C:3]#[C:2][CH2:1][N:4]2[C:12]3[C:7](=[CH:8][CH:9]=[CH:10][CH:11]=3)[C:6](=[O:13])[C:5]2=[O:14])[CH:19]=[CH:18][C:17]=1[Cl:23]To a mixture of 1-prop-2-yn-1-yl-1H-indole-2,3-dione (190 mg, 1.03 mmol), 1,2-dichloro-4-iodobenzene (420 mg, 1.54 mmol), copper(I) iodide (11.0 mg, 0.06 mmol) and triphenylphosphine (40.0 mg, 0.15 mmol) in degassed DMF (24 mL) was added triethyl-amine (307 μL, 2.15 mmol). The reaction was stirred for 5 minutes and Pd(OAc)2 (13.0 mg, 0.06 mmol) was then added. The reaction was stirred at room temperature for 2 days, concentrated in vacuo, dissolved in EtOAc and washed with saturated NaHCO3(aq) (1×). The layers were separated and the aqueous layer was extracted with additional EtOAc (2×).
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