[CH:1]1[C:13]2[NH:12][C:11]3[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=3)[C:5]=2[CH:4]=[CH:3][CH:2]=1.I[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1.C(O[Na])(C)(C)C>C([O-])(=O)C.[Pd+2].C([O-])(=O)C.C1(C)C(C)=CC=CC=1>[C:15]1([C:10]2[C:11]3[NH:12][C:13]4[C:5](=[CH:4][CH:3]=[CH:2][CH:1]=4)[C:6]=3[CH:7]=[CH:8][CH:9]=2)[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1Under an argon stream, 670 g of carbazole, 850 kg of iodobenzene, 20 L of xylene, 460 g of t-BuONa, and palladium acetate (Pd (OAc)) were charged, and the mixture was refluxed for 8 hours. Impurities were filtered and the filtrate was concentrated under reduced pressure, followed by washing with hexane and drying, whereby phenylcarbazole was obtained as 820 g of white powder. The same reaction as in the synthesis of Intermediate 1 was carried out except that phenylcarbazole was used instead of 4-bromobiphenyl, whereby 650 g of white powder was obtained. By an FD-MS analysis, the white powder was identified as Intermediate 14.
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