反应详情

温度

100 °C

To a methanol (1.5 mL) solution of 4-(5-(2,6-diamino-pyridin-3-yl)-isoxazol-3-ylmethyl)-phenol (50 mg, 0.18 mmol) described in Manufacturing Example 18-1-1 was added a 2 N sodium hydroxide solution (89 μL), which was concentrated under a reduced pressure. 2,6-Dichloropyrazine (28 mg, 0.19 mmol) and N,N-dimethylformamide (0.75 mL) were added to the residue, which was stirred for 10 minutes at 100° C. The reaction solution was partitioned into ethyl acetate and water. The organic layer was separated and concentrated under a reduced pressure. The residue was purified by NH silica gel column chromatography (heptane:ethyl acetate=1:1, then ethyl acetate) to obtain the title compound (47 mg, 67%).

1. concentrationwas concentrated under a reduced pressure
2. customThe reaction solution was partitioned into ethyl acetate and water
3. customThe organic layer was separated
4. concentrationconcentrated under a reduced pressure
5. customThe residue was purified by NH silica gel column chromatography (heptane