反应详情

温度

50 °C

A 20-mL vial was charged with N-(((2S)-4-((5-nitro-2-thiophenyl)sulfonyl)-1-(5-(2,2,2-trifluoro-1-hydroxy-1-(trifluoromethyl)ethyl)-2-pyrimidinyl)-2-piperazinyl)methyl)-N-(2-methylpropyl)methanesulfonamide (0.0916 g, 0.134 mmol), iron filings (0.0455 g, 0.815 mmol) and acetic acid (2 mL). The reaction mixture was heated at 50° C. for 20 min., then allowed to cool iii to room temperature. Saturated aqueous NaHCO3 (40 mL) was carefully added and the aqueous phase was extracted with EtOAc (2×20 mL). The combined organic extracts were washed with water (2×40 mL) and saturated aqueous NaCl (40 mL), dried over sodium sulfate, filtered and concentrated in vacuo. The crude product was purified by column chromatography (10 g of silica gel, 30 to 100% EtOAc in hexanes) to afford N-(((2S)-4-((5-amino-2-thiophenyl)sulfonyl)-1-(5-(2,2,2-trifluoro-1-hydroxy-1-(trifluoromethyl)ethyl)-2-pyrimidinyl)-2-piperazinyl)methyl)-N-(2-methylpropyl)methanesulfonamide (0.0668 g) as a yellow foam.

1. extractionthe aqueous phase was extracted with EtOAc (2×20 mL)
2. washThe combined organic extracts were washed with water (2×40 mL) and saturated aqueous NaCl (40 mL)
3. dry with materialdried over sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated in vacuo
6. customThe crude product was purified by column chromatography (10 g of silica gel, 30 to 100% EtOAc in hexanes)