反应详情

温度

110 °C

To a solution of 3,3-dimethyl-2H-benzofuran-4-ol (WO2012/076877 Intermediate 50, 30 mg, 0.18 mmol) in dry DMF (0.5 mL) dipotassium carbonate (50.5 mg, 0.36 mmol) and then 4-(6-fluoro-3-pyridyl)-3-methyl-1H-1,2,4-triazol-5-one (Intermediate 8, 24.8 mg, 0.128 mmol) were added and the reaction mixture was stirred for 8 hours at 110° C. The reaction was quenched with water (1 ml), diluted with brine (5 ml) and extracted with ethyl acetate (2×10 ml). The organic layer was dried (Na2SO4), filtered and evaporated and the residue was purified by flash chromatography (Biotage system) on silica gel using a SNAP 10 g as column and dichloromethane/methanol from 99.5:0.5 to 95:5 as eluent affording the title compound (12 mg) as yellow pale solid.

1. customThe reaction was quenched with water (1 ml)
2. additiondiluted with brine (5 ml)
3. extractionextracted with ethyl acetate (2×10 ml)
4. dry with materialThe organic layer was dried (Na2SO4)
5. filtrationfiltered
6. customevaporated
7. customthe residue was purified by flash chromatography (Biotage system) on silica gel using a SNAP 10 g as column and dichloromethane/methanol from 99.5:0.5 to 95:5 as eluent