1,2-Dimethoxyethane → tert-butyl N-[2-[([4-[3,5-dimethyl-4-(propan-2-yloxy)phenyl]-1-(oxan-2-yl)-1H-pyrrol-3-yl]methyl)(methyl)amino]ethyl]carbamate

関与物質

反応条件

反応手順

A mixture of tert-butyl N-[2-([[3-iodo-1-(oxan-2-yl)-1H-pyrazol-4-yl]methyl](methyl)amino)ethyl]carbamate (500 mg, 1.08 mmol, 1.00 equiv), [3,5-dimethyl-4-(propan-2-yloxy)phenyl]boronic acid (672 mg, 3.23 mmol, 3.00 equiv), [1,1′-Bis(di-tert-butylphosphino)ferrocene]dichloropalladium(II) (70 mg, 0.11 mmol, 0.10 equiv) and K3PO4 (680 mg, 3.21 mmol, 2.98 equiv) in ethylene glycol dimethyl ether (6 mL) and water (0.2 mL) was stirred overnight at 85° C. The reaction was cooled to room temperature, diluted with 30 mL of dichloromethane and washed with 3×20 mL of brine. The organic layer was dried over anhydrous sodium sulfate and concentrated under vacuum. The residue was purified on a silica gel column eluted with 0-10% of MeOH in CH2Cl2 to give 650 mg of tert-butyl N-[2-[([4-[3,5-dimethyl-4-(propan-2-yloxy)phenyl]-1-(oxan-2-yl)-1H-pyrrol-3-yl]methyl)(methyl)amino]ethyl]carbamate as a yellow oil. 1H-NMR (300 MHz, DMSO-d6): δ 7.81 (s, 1H), 7.46 (s, 1H), 7.42 (d, J=4.8 Hz, 1H), 5.40-5.30 (m, 1H), 4.21-4.09 (m, 1H), 4.01-3.88 (m, 2H), 3.47-3.41 (m, 1H), 3.35-3.30 (m, 1H), 3.10 (s, 1H), 2.40-2.32 (m, 1H), 2.18-2.08 (s, 9H), 2.08 (s, 1H), 1.61-1.50 (m, 1H), 1.37-1.35 (m, 4H), 1.21 (s, 15H), 1.05-1.03 (m, 2H) ppm. LCMS (method A, ESI): RT=1.37 min, m/z=501.0 [M+H]+.

情報源と証拠