反应详情

To a solution of dimethylamine (0.102 mL, 2.0 M, 0.2 mmol) in 1 mL of anhydrous THF was added trimethylaluminum (0.102 mL, 2.0 M, 0.2 mmol). The solution was stirred at room temperature for 15 minutes, then treated with a solution of ethyl 2-(2-(3-azidopropyl)-5-(2,5-difluorophenyl)-2-phenyl-1,3,4-thiadiazol-3(2H)-yl)thiazole-4-carboxylate (0.035 g, 0.07 mmol) in 0.5 mL of anhydrous THF. After stirring at room temperature for 16 hours the mixture was treated with 0.5 N aqueous Rochelle's salt solution (10 mL), then partitioned between saturated NH4Cl (10 mL) and EtOAc (10 mL). The aqueous layer was extracted with EtOAc (2×10 mL) and the combined organic phases were washed with brine (10 mL), dried over Na2SO4 and concentrated in vacuo. The residue was purified by flash column chromatography (20-35% ethyl acetate/hexanes) to afford the desired product as a yellow gum, 0.026 g, 74%.

1. stirringAfter stirring at room temperature for 16 hours the mixture
2. custompartitioned between saturated NH4Cl (10 mL) and EtOAc (10 mL)
3. extractionThe aqueous layer was extracted with EtOAc (2×10 mL)
4. washthe combined organic phases were washed with brine (10 mL)
5. dry with materialdried over Na2SO4
6. concentrationconcentrated in vacuo
7. customThe residue was purified by flash column chromatography (20-35% ethyl acetate/hexanes)