反应详情

温度

70 °C

tert-Butyl 2-(7-(3-cyano-4-isopropoxybenzyloxy)-9-iodo-2,3-dihydro-1H-pyrrolo[1,2-a]indol-1-yl)acetate (0.717 g, 1.223 mmol) was dissolved in anhydrous THF (12.2 mL, 1.223 mmol). The solution was degassed with nitrogen for about 5 min using a syringe needle. Bis(tri-t-butylphosphine)Pd(0) (0.056 g, 0.110 mmol) and 2.0 M methylzinc chloride in THF (1.83 mL, 3.67 mmol) were added. The reaction vessel was purged with nitrogen, sealed, and heated at 70° C. After 2 h, the reaction mixture was cooled to 25° C. and slowly added saturated NaHCO3 (5 mL). After stirring for about 5 min, the reaction was diluted with EtOAc (20 mL), filtered through a celite pad, and the celite pad was washed with EtOAc (3×20 mL). The organic layer was washed with water (2×20 mL), brine (10 mL), and dried over MgSO4. The solvent was evaporated in vacuo and the residue was purified by silica gel column chromatography to give the title compound as an oil (0.470 g). LCMS m/z=475.4 [M+H]+; 1H NMR (400 MHz, Acetonitrile-d3) δ ppm 1.36 (d, J=5.94 Hz, 6H), 1.41 (s, 9H), 2.19 (s, 3H), 2.27-2.37 (m, 1H), 2.46 (dd, J=15.66, 9.22 Hz, 1H), 2.72-2.86 (m, 2H), 3.60-3.69 (m, 1H), 3.93 (m, 1H), 4.00-4.10 (m, 1H), 4.75 (dt, J=12.13, 6.06 Hz, 1H), 5.03 (s, 2H), 6.77 (dd, J=8.72, 2.40 Hz, 1H), 7.00 (d, J=2.40 Hz, 1H), 7.11 (d, J=8.72 Hz, 1H), 7.13 (d, J=8.72 Hz, 1H), 7.63-7.68 (m, 1H), 7.69 (d, J=2.27 Hz, 1H).

1. customThe solution was degassed with nitrogen for about 5 min
2. customThe reaction vessel was purged with nitrogen
3. customsealed
4. temperaturethe reaction mixture was cooled to 25° C.
5. additionthe reaction was diluted with EtOAc (20 mL)
6. filtrationfiltered through a celite pad
7. washthe celite pad was washed with EtOAc (3×20 mL)
8. washThe organic layer was washed with water (2×20 mL), brine (10 mL)
9. dry with materialdried over MgSO4
10. customThe solvent was evaporated in vacuo
11. customthe residue was purified by silica gel column chromatography