反应详情

To a solution of 3-cyano-N-(2,4-dimethoxybenzyl)-4-fluoro-N-1,2,4-thiadiazol-5-ylbenzenesulfonamide (Preparation 68, 150 mg, 0.35 mmol) in dimethyl sulfoxide (10 ml) was added N-[1-tert-butyl-4-(5-chloro-2-hydroxyphenyl)-1H-pyrazol-5-yl]-2,2,2-trifluoroacetamide (Preparation 209, 131 mg, 0.36 mmol) and potassium carbonate (135 mg, 0.86 mmol) and the flask was purged with nitrogen (×3). The resulting suspension was stirred at room temperature for 18 hours before pouring into sodium hydroxide (1 M aqueous solution) and extracting with dichloromethane. The combined organic phase was dried over magnesium sulfate, filtered and concentrated in vacuo to afford a pale yellow oil. This was purified by column chromatography (80 g silica gel column) eluting with ethyl acetate:heptane (1:1, by volume) to furnish the title compound as a pale yellow oil, 157 mg, 59% yield.

1. customthe flask was purged with nitrogen (×3)
2. additionbefore pouring into sodium hydroxide (1 M aqueous solution)
3. extractionextracting with dichloromethane
4. dry with materialThe combined organic phase was dried over magnesium sulfate
5. filtrationfiltered
6. concentrationconcentrated in vacuo
7. customto afford a pale yellow oil
8. customThis was purified by column chromatography (80 g silica gel column)
9. washeluting with ethyl acetate:heptane (1:1, by volume)