反应详情

温度

50 °C

A mixture of 2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-4-[2-(tert-butyl-dimethyl-silanyloxy)-ethoxy]-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridine (390 mg, 0.641 mmol, prepared as described in the previous step) and tetrabutylammonium fluoride hydrate (914 mg, 3.21 mmol) in THF (10 mL) was stirred at 50° C. for 18 h. After cooling to room temperature, the resulting mixture was treated with EtOAc (50 mL) and washed with H2O (2×20 mL), brine (20 mL). The organic layer was dried with Na2SO4 and concentrated in vacuo. The residue was purified by flash chromatography on silica gel (40:60-60:40 EtOAc/heptane) to yield 2-[2-(5-tert-butyl-4-chloro-2-methyl-2H-pyrazol-3-yl)-6-(2-trifluoromethyl-phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy]-ethanol as a white solid. 1H-NMR (400 MHz, CD3OD) δ: 7.67 (dd, J=7.3, 2.0 Hz, 1H), 7.48-7.56 (m, 2H), 7.39 (td, J=6.7, 1.8 Hz, 2H), 4.64-4.68 (m, 2H), 4.05 (s, 3H), 3.97-4.02 (m, 2H), 1.42-1.49 (m, 9H). Mass Spectrum (LCMS, ESI pos.) Calculated For C23H23ClF3N5O2: 492.2 (M+H). Measured: 492.4.

1. customprepared
2. temperatureAfter cooling to room temperature
3. washwashed with H2O (2×20 mL), brine (20 mL)
4. dry with materialThe organic layer was dried with Na2SO4
5. concentrationconcentrated in vacuo
6. customThe residue was purified by flash chromatography on silica gel (40:60-60:40 EtOAc/heptane)