反应详情

温度

60 °C

A mixture of 5,6-dihydroxy-indan-1-one (Intermediate O) (1.80 g, 0.01098 mole), potassium carbonate (3.80 g, 0.02744 mol), 2-(3-chloro-propoxy)-tetrahydro-pyran (Compound 18a) (1.37 g, 0.00769 mol) and potassium iodide (1.28 g, 0.00769 mol) in DMF (20 mL) was stirred at 60° C. for 4 hours. To this mixture was then added ethyl bromide (1.64 mL, 0.02196 mol) and continued to heat for further 4 h. The reaction mixture was then diluted with ethyl acetate, washed with water and dried over MgSO4. The solvent was removed in vacuo and the title compound was purified by silica gel column chromatography using 3:1 Hexanes:ethyl acetate as the eluent. MS m/z 334.2 (M+H)+;

1. temperatureto heat for further 4 h
2. washwashed with water
3. dry with materialdried over MgSO4
4. customThe solvent was removed in vacuo
5. customthe title compound was purified by silica gel column chromatography