Reaction SMILES: Br[C:2]1[CH:3]=[CH:4][C:5]2=[C:6]([CH:37]=1)[N:7]=[C:8]([NH:29][C:30](=[O:36])[O:31][C:32]([CH3:35])([CH3:34])[CH3:33])[CH2:9][C:10]([C:12](=[O:28])[N:13]([CH2:17][CH2:18][CH2:19][O:20][Si:21]([C:24]([CH3:27])([CH3:26])[CH3:25])([CH3:23])[CH3:22])[CH2:14][CH2:15][CH3:16])=[CH:11]2.CC1(C)C(C)(C)OB([C:46]2[CH:51]=[CH:50][C:49]([CH2:52][C:53]([O:55][CH2:56][CH2:57][N:58]([CH3:60])[CH3:59])=[O:54])=[CH:48][CH:47]=2)O1.C(=O)([O-])[O-].[K+].[K+]>C(#N)C.CCOC(C)=O.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>[CH3:60][N:58]([CH3:59])[CH2:57][CH2:56][O:55][C:53](=[O:54])[CH2:52][C:49]1[CH:50]=[CH:51][C:46]([C:2]2[CH:3]=[CH:4][C:5]3=[C:6]([CH:37]=2)[N:7]=[C:8]([NH:29][C:30]([O:31][C:32]([CH3:34])([CH3:33])[CH3:35])=[O:36])[CH2:9][C:10]([C:12](=[O:28])[N:13]([CH2:17][CH2:18][CH2:19][O:20][Si:21]([C:24]([CH3:27])([CH3:25])[CH3:26])([CH3:22])[CH3:23])[CH2:14][CH2:15][CH3:16])=[CH:11]3)=[CH:47][CH:48]=1
Reactant: CCCN(CCCO[Si](C)(C)C(C)(C)C)C(=O)C1=Cc2ccc(Br)cc2N=C(NC(=O)OC(C)(C)C)C1
Reactant: CN(C)CCOC(=O)Cc1ccc(B2OC(C)(C)C(C)(C)O2)cc1
Agent: c1ccc([P](c2ccccc2)(c2ccccc2)[Pd]([P](c2ccccc2)(c2ccccc2)c2ccccc2)([P](c2ccccc2)(c2ccccc2)c2ccccc2)[P](c2ccccc2)(c2ccccc2)c2ccccc2)cc1
Agent: O=C([O-])[O-]
Agent: [K+]
Solvent: CCOC(C)=O
Solvent: CC#N
Product: CCCN(CCCO[Si](C)(C)C(C)(C)C)C(=O)C1=Cc2ccc(-c3ccc(CC(=O)OCCN(C)C)cc3)cc2N=C(NC(=O)OC(C)(C)C)C1
Temperature: 100 °C

Procedure:
tert-butyl (1E,4E)-8-bromo-4-((3-(tert-butyldimethylsilyloxy)propyl)(propyl)carbamoyl)-3H-benzo[b]azepin-2-ylcarbamate, 2-(dimethylamino)ethyl 2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)acetate (1.5 equiv), tetrakis(triphenylphosphine)palladium(0), 2M aqueous potassium carbonate (3 equiv) were combined in 2 mls of acetonitrile in a microwave reaction vial. This mixture was heated in a microwave to 100° C. for 30 minutes. The mixture was then diluted with EtOAc, washed twice with brine, dried over sodium sulfate, and concentrated under reduced pressure. Preparative thin layer chromatography (2×0.5 mm plates, 7% MeOH/DCM) afforded 2-(dimethylamino)ethyl-2-(4-((1E,4E)-2-(tert-butoxycarbonylamino)-4-((3-(tert-butyldimethylsilyloxy)propyl)(propyl)carbamoyl)-3H-benzo[b]azepin-8-yl)phenyl)acetate. Step 2: 2-(dimethylamino)ethyl-2-(4-((1E,4E)-2-(tert-butoxycarbonylamino)-4-((3-(tert-butyldimethylsilyloxy)propyl)(propyl)carbamoyl)-3H-benzo[b]azepin-8-yl)phenyl)acetate was dissolved in 2 mls of dichloromethane and 0.5 ml of TFA. After about one hour, the mixture was concentrated under reduced pressure and the resulting residue was then re-dissolved in dichloromethane and 1 ml of concentrated ammonium hydroxide added and the mixture vigorously stirred for 15 minutes. This mixture was then diluted with water, extracted with dichloromethane (2×), extracts dried over sodium sulfate and concentrated under reduced pressure. Preparative thin layer chromatography (2×0.5 mm plates, 10% MeOH/DCM/0.5% NH4OH) afforded 2-(dimethylamino)ethyl-2-(4-((1E,4E)-2-amino-4-((3-hydroxypropyl)(propyl)carbamoyl)-3H-benzo[b]azepin-8-yl)phenyl)acetate. 1H NMR (400 MHz, CDCl3) δ 7.59-7.64 (m, 2H), 7.48-7.51 (m, 1H), 7.28-7.38 (m, 4H), 6.87 (s, 1H), 4.19-4.24 (m, 2H), 3.58-3.74 (m, 6H), 3.44-3.52 (m, 2H), 2.84 (s, 2H), 2.54-2.61 (m, 2H), 2.27 (s, 6H), 1.79-1.86 (m, 2H), 1.65-1.76 (m, 2H), 0.89-0.97 (m, 3H); m/z (APCI-pos) M+1=507.2.