反应详情

温度

0 °C

To a solution of 3-iodo-4-nitro-1-((5-(trifluoromethyl)pyridin-2-yl)methyl)-1H-indazole (0.464 g, 1.04 mmol) in MeOH (10 mL) at 0° C. was added Zn dust (0.339 g, 5.18 mmol) followed by saturated aqueous NH4Cl (10 mL). The mixture was stirred at 0° C. for 1 hour, then warmed to ambient temperature and stirred for an additional 1 hour. The mixture was diluted with MeOH and filtered. Saturated aqueous NH4OAc was added to the filtrate and the mixture was concentrated to remove bulk MeOH. The mixture was extracted with EtOAc, and the combined organic extracts were washed with saturated aqueous NaHCO3 and brine, dried over Na2SO4, filtered and concentrated. The product was purified by column chromatography (25 to 100% EtOAc/hexane) to afford 0.230 g (76%) of the product as yellow/orange oil.

1. temperaturewarmed to ambient temperature
2. stirringstirred for an additional 1 hour
3. filtrationfiltered
4. additionSaturated aqueous NH4OAc was added to the filtrate
5. concentrationthe mixture was concentrated
6. customto remove bulk MeOH
7. extractionThe mixture was extracted with EtOAc
8. washthe combined organic extracts were washed with saturated aqueous NaHCO3 and brine
9. dry with materialdried over Na2SO4
10. filtrationfiltered
11. concentrationconcentrated
12. customThe product was purified by column chromatography (25 to 100% EtOAc/hexane)