Sodium Carbonate → HCID 178514711, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 5-bromo-2-(4-trifluoromethyl-phenoxymethyl)-1H-benzoimidazole (0.100 g, 0.269 mmol, from Example 1.1), N-tert-butyl-2-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-4-trifluoromethyl-benzenesulfonamide (0.165 g, 0.404 mmol), sodium carbonate (0.171 g, 1.61 mmol), and 1,1′-[bis(di-tert-butylphosphino)ferrocene]-palladium dichloride (0.035 g, 0.0538 mmol) in DME (2 mL) and H2O (0.5 mL) was heated at 80° C. for 12 hours. The reaction mixture was concentrated under reduced pressure to provide a residue, which was purified by chromatography (silica, hexanes:EtOAc, 1:1) to afford the product as a off-white solid. The obtained material was dissolved in TFA (2 mL) and the resulting solution was heated to 60° C. for 3 hours. The reaction mixture was concentrated in vacuo to provide a residue which was purified by chromatography (silica, hexanes: EtOAc, 1:1) to afford the title compound as a brown solid (0.101 g, 73%). 1H NMR (400 MHz, CD3OD) δ (ppm): 0.33 (d, 1H, J=8.0 Hz), 7.89 (dd, 1H, J=8.0 Hz, J=1.2 Hz), 7.82 (d, 1H, J=0.8 Hz), 7.76 (d, 1H, J=8.8 Hz), 7.69-7.65 (m, 3H), 7.50 (dd, 1H, J=8.8 Hz, J=1.6 Hz), 7.28 (d, 2H, J=8.8 Hz), 5.62 (s, 2H). Mass Spectrum (LCMS, ESI pos.) Calcd. For C22H16F6N3O3S: 516.4 (M+H), Found 516.3.

Provenance & Evidence