B([O-])([O-])O[C:3]1[CH:8]=[CH:7][C:6]([O:9][CH2:10][CH2:11][CH2:12][O:13][CH2:14][CH3:15])=[CH:5][CH:4]=1.Br[C:19]1[CH:20]=[CH:21][C:22]2[N:28]([CH3:29])[CH2:27][CH2:26][C:25]([C:30]([NH:32][C:33]3[CH:38]=[CH:37][C:36]([CH2:39][N:40]([CH3:47])[CH:41]4[CH2:46][CH2:45][O:44][CH2:43][CH2:42]4)=[CH:35][CH:34]=3)=[O:31])=[CH:24][C:23]=2[CH:48]=1.C(=O)([O-])[O-].[K+].[K+]>C(O)C.O.C1(C)C=CC=CC=1.C(OCC)(=O)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH2:14]([O:13][CH2:12][CH2:11][CH2:10][O:9][C:6]1[CH:7]=[CH:8][C:3]([C:19]2[CH:20]=[CH:21][C:22]3[N:28]([CH3:29])[CH2:27][CH2:26][C:25]([C:30]([NH:32][C:33]4[CH:34]=[CH:35][C:36]([CH2:39][N:40]([CH3:47])[CH:41]5[CH2:46][CH2:45][O:44][CH2:43][CH2:42]5)=[CH:37][CH:38]=4)=[O:31])=[CH:24][C:23]=3[CH:48]=2)=[CH:4][CH:5]=1)[CH3:15]In a mixture of water ethanol:toluene (1:1:10, v/v, 18.0 ml) were dissolved 4-(3-ethoxypropoxy)phenyl borate (250 mg) and 7-bromo-1-methyl-N-[4-[[N-methyl-N-(tetrahydro-2H-pyran-4-yl)amino]methyl]phenyl]-2,3-dihydro-1H-1-benzazepine-4-carboxamide (450 mg). To the solution was added potassium carbonate (308 mg), and the mixture was stirred under argon atmosphere at room temperature for 30 minutes. To the mixture was added tetrakistriphenylphosphinepalladium (43 mg), and the mixture was refluxed under argon atmosphere for 10 hours. The mixture was diluted with ethyl acetate, and washed with water and saturated brine, and the organic layer was dried with anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified with silica gel column chromatography (25 g, ethyl acetate:ethanol:triethylamine=100:10:1) and recrystallized from ethanol/hexane to give 7-[4-(3-ethoxypropoxy)phenyl]-1-methyl-N-[4-[[N-methyl-N-(tetrahydro-2H-pyran-4-yl)amino]methyl]phenyl]-2,3-dihydro-1H-1-benzazepine-4-carboxamide (Compound 13) (359 mg, 66%) as yellow crystals.
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