反应详情

a mixture of 2-hydroxynaphthalene-1,4-dione (6, 0.52 g, 3.0 mmol), tert-butyl 2-bromoacetate (0.78 g, 4.0 mmol), silver oxide (0.93 g, 4.0 mmol) and potassium iodide (0.05 g, 0.3 mmol) were refluxed in 10 ml of chloroform overnight under Ar. The reaction mixture was filtered and washed with DCM (3×20 ml), the filtrate was concentrated and purified with flash chromatography to give compound 7c as a light yellow solid, 13%, m.p.=120-122° C.

1. filtrationThe reaction mixture was filtered
2. washwashed with DCM (3×20 ml)
3. concentrationthe filtrate was concentrated
4. custompurified with flash chromatography