[N+:1]([C:4]1[CH:28]=[CH:27][C:7]([C:8]([N:10]([C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=2I)[CH2:11][CH2:12][C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][C:14]=2I)=[O:9])=[CH:6][CH:5]=1)([O-:3])=[O:2].Cl>CC1N(C(N(C)C)=O)C1.[Cu]>[N+:1]([C:4]1[CH:28]=[CH:27][C:7]([C:8]([N:10]2[CH2:11][CH2:12][C:13]3[CH:18]=[CH:17][CH:16]=[CH:15][C:14]=3[C:21]3[CH:22]=[CH:23][CH:24]=[CH:25][C:20]2=3)=[O:9])=[CH:6][CH:5]=1)([O-:3])=[O:2]To a solution of 0.90 g of N-(4-nitrobenzoyl)-N-(2-iodophenyl)-2-iodobenzeneethylamine in 10 ml of N,N-dimethylpropyleneurea (DMPU) is added 1.91 g of "activated" copper bronze. The mixture is stirred and heated at 195° for 2 days, cooled and slowly dropped into 100 ml of 0.5N HCl with stirring. The precipitate is filtered, washed with H2O and air dried (1.0 g of solid). The solid is extracted with ethyl acetate to give 0.50 g of solid. Chromatography on thick layer silica gel plates with ethyl acetate-hexane (1:2) as solvent gives 0.15 g of yellow solid.
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