I[C:2]1[CH:6]=[CH:5][N:4]([Si:7]([CH:14]([CH3:16])[CH3:15])([CH:11]([CH3:13])[CH3:12])[CH:8]([CH3:10])[CH3:9])[CH:3]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.Br[C:37]1([Zn])[CH:42]=[CH:41][CH:40]=[CH:39][NH:38]1>C1COCC1.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>[CH:8]([Si:7]([CH:14]([CH3:16])[CH3:15])([CH:11]([CH3:13])[CH3:12])[N:4]1[CH:5]=[CH:6][C:2]([C:37]2[CH:42]=[CH:41][CH:40]=[CH:39][N:38]=2)=[CH:3]1)([CH3:10])[CH3:9]A solution of 3-iodo-1-(triisopropylsilyl)-1H-pyrrole (11.0 g, 2.87 mmol), triphenylphosphine (27 mg, 0.103 mmol), and tetrakis(triphenylphosphine)palladium(0) (80 mg, 0.069 mmol) in THF (20 mL) was degassed with Ar (g) for 15 min, then 2-bromo(pyridin-2-yl)zinc (1.5 mL of 0.5M solution, 5.74 mmol) was added and degassing continued a further 15 min. The reaction was stirred at 70° C. for 5 h and monitored by LC/MS. The reaction mixture was quenched with H2O (40 mL) then extracted with EtOAc (3×25 mL) and the combined organic extracts washed with brine. The organic phase was dried over Na2SO4, concentrated in vacuo and the crude residue was chromatographed on silica gel eluting with EtOAc:hexane (1:9) to afford 2-[1-(triisopropylsilyl)-1H-pyrrol-3-yl]pyridine as a clear oil which was used below without further purification.
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